diff --git a/Python/compile.c b/Python/compile.c
index f41312a..6d3d889 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -5,10 +5,10 @@
  * PyCodeObject.  The compiler makes several passes to build the code
  * object:
  *   1. Checks for future statements.  See future.c
- *   2. Builds a symbol table.	See symtable.c.
+ *   2. Builds a symbol table.  See symtable.c.
  *   3. Generate code for basic blocks.  See compiler_mod() in this file.
  *   4. Assemble the basic blocks into final code.  See assemble() in
- *	this file.	 
+ *      this file.
  *   5. Optimize the byte code (peephole optimizations).  See peephole.c
  *
  * Note that compiler_mod() suggests module, but the module ast type
@@ -40,37 +40,37 @@
 #define DEFAULT_LNOTAB_SIZE 16
 
 struct instr {
-	unsigned i_jabs : 1;
-	unsigned i_jrel : 1;
-	unsigned i_hasarg : 1;
-	unsigned char i_opcode;
-	int i_oparg;
-	struct basicblock_ *i_target; /* target block (if jump instruction) */
-	int i_lineno;
+    unsigned i_jabs : 1;
+    unsigned i_jrel : 1;
+    unsigned i_hasarg : 1;
+    unsigned char i_opcode;
+    int i_oparg;
+    struct basicblock_ *i_target; /* target block (if jump instruction) */
+    int i_lineno;
 };
 
 typedef struct basicblock_ {
     /* Each basicblock in a compilation unit is linked via b_list in the
        reverse order that the block are allocated.  b_list points to the next
        block, not to be confused with b_next, which is next by control flow. */
-	struct basicblock_ *b_list;
-	/* number of instructions used */
-	int b_iused;
-	/* length of instruction array (b_instr) */
-	int b_ialloc;
-	/* pointer to an array of instructions, initially NULL */
-	struct instr *b_instr;
-	/* If b_next is non-NULL, it is a pointer to the next
-	   block reached by normal control flow. */
-	struct basicblock_ *b_next;
-	/* b_seen is used to perform a DFS of basicblocks. */
-	unsigned b_seen : 1;
-	/* b_return is true if a RETURN_VALUE opcode is inserted. */
-	unsigned b_return : 1;
-	/* depth of stack upon entry of block, computed by stackdepth() */
-	int b_startdepth;
-	/* instruction offset for block, computed by assemble_jump_offsets() */
-	int b_offset;
+    struct basicblock_ *b_list;
+    /* number of instructions used */
+    int b_iused;
+    /* length of instruction array (b_instr) */
+    int b_ialloc;
+    /* pointer to an array of instructions, initially NULL */
+    struct instr *b_instr;
+    /* If b_next is non-NULL, it is a pointer to the next
+       block reached by normal control flow. */
+    struct basicblock_ *b_next;
+    /* b_seen is used to perform a DFS of basicblocks. */
+    unsigned b_seen : 1;
+    /* b_return is true if a RETURN_VALUE opcode is inserted. */
+    unsigned b_return : 1;
+    /* depth of stack upon entry of block, computed by stackdepth() */
+    int b_startdepth;
+    /* instruction offset for block, computed by assemble_jump_offsets() */
+    int b_offset;
 } basicblock;
 
 /* fblockinfo tracks the current frame block.
@@ -83,65 +83,65 @@
 enum fblocktype { LOOP, EXCEPT, FINALLY_TRY, FINALLY_END };
 
 struct fblockinfo {
-	enum fblocktype fb_type;
-	basicblock *fb_block;
+    enum fblocktype fb_type;
+    basicblock *fb_block;
 };
 
 /* The following items change on entry and exit of code blocks.
    They must be saved and restored when returning to a block.
 */
 struct compiler_unit {
-	PySTEntryObject *u_ste;
+    PySTEntryObject *u_ste;
 
-	PyObject *u_name;
-	/* The following fields are dicts that map objects to
-	   the index of them in co_XXX.	 The index is used as
-	   the argument for opcodes that refer to those collections.
-	*/
-	PyObject *u_consts;    /* all constants */
-	PyObject *u_names;     /* all names */
-	PyObject *u_varnames;  /* local variables */
-	PyObject *u_cellvars;  /* cell variables */
-	PyObject *u_freevars;  /* free variables */
+    PyObject *u_name;
+    /* The following fields are dicts that map objects to
+       the index of them in co_XXX.      The index is used as
+       the argument for opcodes that refer to those collections.
+    */
+    PyObject *u_consts;    /* all constants */
+    PyObject *u_names;     /* all names */
+    PyObject *u_varnames;  /* local variables */
+    PyObject *u_cellvars;  /* cell variables */
+    PyObject *u_freevars;  /* free variables */
 
-	PyObject *u_private;	/* for private name mangling */
+    PyObject *u_private;        /* for private name mangling */
 
-	int u_argcount;	   /* number of arguments for block */ 
-	/* Pointer to the most recently allocated block.  By following b_list
-	   members, you can reach all early allocated blocks. */
-	basicblock *u_blocks;
-	basicblock *u_curblock; /* pointer to current block */
-	int u_tmpname;		/* temporary variables for list comps */
+    int u_argcount;        /* number of arguments for block */
+    /* Pointer to the most recently allocated block.  By following b_list
+       members, you can reach all early allocated blocks. */
+    basicblock *u_blocks;
+    basicblock *u_curblock; /* pointer to current block */
+    int u_tmpname;              /* temporary variables for list comps */
 
-	int u_nfblocks;
-	struct fblockinfo u_fblock[CO_MAXBLOCKS];
+    int u_nfblocks;
+    struct fblockinfo u_fblock[CO_MAXBLOCKS];
 
-	int u_firstlineno; /* the first lineno of the block */
-	int u_lineno;	   /* the lineno for the current stmt */
-	bool u_lineno_set; /* boolean to indicate whether instr
-			      has been generated with current lineno */
+    int u_firstlineno; /* the first lineno of the block */
+    int u_lineno;          /* the lineno for the current stmt */
+    bool u_lineno_set; /* boolean to indicate whether instr
+                          has been generated with current lineno */
 };
 
-/* This struct captures the global state of a compilation.  
+/* This struct captures the global state of a compilation.
 
 The u pointer points to the current compilation unit, while units
-for enclosing blocks are stored in c_stack.	The u and c_stack are
+for enclosing blocks are stored in c_stack.     The u and c_stack are
 managed by compiler_enter_scope() and compiler_exit_scope().
 */
 
 struct compiler {
-	const char *c_filename;
-	struct symtable *c_st;
-	PyFutureFeatures *c_future; /* pointer to module's __future__ */
-	PyCompilerFlags *c_flags;
+    const char *c_filename;
+    struct symtable *c_st;
+    PyFutureFeatures *c_future; /* pointer to module's __future__ */
+    PyCompilerFlags *c_flags;
 
-	int c_interactive;	 /* true if in interactive mode */
-	int c_nestlevel;
+    int c_interactive;           /* true if in interactive mode */
+    int c_nestlevel;
 
-	struct compiler_unit *u; /* compiler state for current block */
-	PyObject *c_stack;	 /* Python list holding compiler_unit ptrs */
-	char *c_encoding;	 /* source encoding (a borrowed reference) */
-	PyArena *c_arena;	 /* pointer to memory allocation arena */
+    struct compiler_unit *u; /* compiler state for current block */
+    PyObject *c_stack;           /* Python list holding compiler_unit ptrs */
+    char *c_encoding;            /* source encoding (a borrowed reference) */
+    PyArena *c_arena;            /* pointer to memory allocation arena */
 };
 
 static int compiler_enter_scope(struct compiler *, identifier, void *, int);
@@ -162,12 +162,12 @@
 static int compiler_visit_expr(struct compiler *, expr_ty);
 static int compiler_augassign(struct compiler *, stmt_ty);
 static int compiler_visit_slice(struct compiler *, slice_ty,
-				expr_context_ty);
+                                expr_context_ty);
 
 static int compiler_push_fblock(struct compiler *, enum fblocktype,
-				basicblock *);
+                                basicblock *);
 static void compiler_pop_fblock(struct compiler *, enum fblocktype,
-				basicblock *);
+                                basicblock *);
 /* Returns true if there is a loop on the fblock stack. */
 static int compiler_in_loop(struct compiler *);
 
@@ -182,175 +182,175 @@
 PyObject *
 _Py_Mangle(PyObject *privateobj, PyObject *ident)
 {
-	/* Name mangling: __private becomes _classname__private.
-	   This is independent from how the name is used. */
-	const char *p, *name = PyString_AsString(ident);
-	char *buffer;
-	size_t nlen, plen;
-	if (privateobj == NULL || !PyString_Check(privateobj) ||
-	    name == NULL || name[0] != '_' || name[1] != '_') {
-		Py_INCREF(ident);
-		return ident;
-	}
-	p = PyString_AsString(privateobj);
-	nlen = strlen(name);
-	/* Don't mangle __id__ or names with dots.
+    /* Name mangling: __private becomes _classname__private.
+       This is independent from how the name is used. */
+    const char *p, *name = PyString_AsString(ident);
+    char *buffer;
+    size_t nlen, plen;
+    if (privateobj == NULL || !PyString_Check(privateobj) ||
+        name == NULL || name[0] != '_' || name[1] != '_') {
+        Py_INCREF(ident);
+        return ident;
+    }
+    p = PyString_AsString(privateobj);
+    nlen = strlen(name);
+    /* Don't mangle __id__ or names with dots.
 
-	   The only time a name with a dot can occur is when
-	   we are compiling an import statement that has a 
-	   package name.
+       The only time a name with a dot can occur is when
+       we are compiling an import statement that has a
+       package name.
 
-	   TODO(jhylton): Decide whether we want to support
-	   mangling of the module name, e.g. __M.X.
-	*/
-	if ((name[nlen-1] == '_' && name[nlen-2] == '_') 
-	    || strchr(name, '.')) {
-		Py_INCREF(ident);
-		return ident; /* Don't mangle __whatever__ */
-	}
-	/* Strip leading underscores from class name */
-	while (*p == '_')
-		p++;
-	if (*p == '\0') {
-		Py_INCREF(ident);
-		return ident; /* Don't mangle if class is just underscores */
-	}
-	plen = strlen(p);
+       TODO(jhylton): Decide whether we want to support
+       mangling of the module name, e.g. __M.X.
+    */
+    if ((name[nlen-1] == '_' && name[nlen-2] == '_')
+        || strchr(name, '.')) {
+        Py_INCREF(ident);
+        return ident; /* Don't mangle __whatever__ */
+    }
+    /* Strip leading underscores from class name */
+    while (*p == '_')
+        p++;
+    if (*p == '\0') {
+        Py_INCREF(ident);
+        return ident; /* Don't mangle if class is just underscores */
+    }
+    plen = strlen(p);
 
-	assert(1 <= PY_SSIZE_T_MAX - nlen);
-	assert(1 + nlen <= PY_SSIZE_T_MAX - plen);
+    assert(1 <= PY_SSIZE_T_MAX - nlen);
+    assert(1 + nlen <= PY_SSIZE_T_MAX - plen);
 
-	ident = PyString_FromStringAndSize(NULL, 1 + nlen + plen);
-	if (!ident)
-		return 0;
-	/* ident = "_" + p[:plen] + name # i.e. 1+plen+nlen bytes */
-	buffer = PyString_AS_STRING(ident);
-	buffer[0] = '_';
-	strncpy(buffer+1, p, plen);
-	strcpy(buffer+1+plen, name);
-	return ident;
+    ident = PyString_FromStringAndSize(NULL, 1 + nlen + plen);
+    if (!ident)
+        return 0;
+    /* ident = "_" + p[:plen] + name # i.e. 1+plen+nlen bytes */
+    buffer = PyString_AS_STRING(ident);
+    buffer[0] = '_';
+    strncpy(buffer+1, p, plen);
+    strcpy(buffer+1+plen, name);
+    return ident;
 }
 
 static int
 compiler_init(struct compiler *c)
 {
-	memset(c, 0, sizeof(struct compiler));
+    memset(c, 0, sizeof(struct compiler));
 
-	c->c_stack = PyList_New(0);
-	if (!c->c_stack)
-		return 0;
+    c->c_stack = PyList_New(0);
+    if (!c->c_stack)
+        return 0;
 
-	return 1;
+    return 1;
 }
 
 PyCodeObject *
 PyAST_Compile(mod_ty mod, const char *filename, PyCompilerFlags *flags,
-	      PyArena *arena)
+              PyArena *arena)
 {
-	struct compiler c;
-	PyCodeObject *co = NULL;
-	PyCompilerFlags local_flags;
-	int merged;
+    struct compiler c;
+    PyCodeObject *co = NULL;
+    PyCompilerFlags local_flags;
+    int merged;
 
-	if (!__doc__) {
-		__doc__ = PyString_InternFromString("__doc__");
-		if (!__doc__)
-			return NULL;
-	}
+    if (!__doc__) {
+        __doc__ = PyString_InternFromString("__doc__");
+        if (!__doc__)
+            return NULL;
+    }
 
-	if (!compiler_init(&c))
-		return NULL;
-	c.c_filename = filename;
-	c.c_arena = arena;
-	c.c_future = PyFuture_FromAST(mod, filename);
-	if (c.c_future == NULL)
-		goto finally;
-	if (!flags) {
-		local_flags.cf_flags = 0;
-		flags = &local_flags;
-	}
-	merged = c.c_future->ff_features | flags->cf_flags;
-	c.c_future->ff_features = merged;
-	flags->cf_flags = merged;
-	c.c_flags = flags;
-	c.c_nestlevel = 0;
+    if (!compiler_init(&c))
+        return NULL;
+    c.c_filename = filename;
+    c.c_arena = arena;
+    c.c_future = PyFuture_FromAST(mod, filename);
+    if (c.c_future == NULL)
+        goto finally;
+    if (!flags) {
+        local_flags.cf_flags = 0;
+        flags = &local_flags;
+    }
+    merged = c.c_future->ff_features | flags->cf_flags;
+    c.c_future->ff_features = merged;
+    flags->cf_flags = merged;
+    c.c_flags = flags;
+    c.c_nestlevel = 0;
 
-	c.c_st = PySymtable_Build(mod, filename, c.c_future);
-	if (c.c_st == NULL) {
-		if (!PyErr_Occurred())
-			PyErr_SetString(PyExc_SystemError, "no symtable");
-		goto finally;
-	}
+    c.c_st = PySymtable_Build(mod, filename, c.c_future);
+    if (c.c_st == NULL) {
+        if (!PyErr_Occurred())
+            PyErr_SetString(PyExc_SystemError, "no symtable");
+        goto finally;
+    }
 
-	/* XXX initialize to NULL for now, need to handle */
-	c.c_encoding = NULL;
+    /* XXX initialize to NULL for now, need to handle */
+    c.c_encoding = NULL;
 
-	co = compiler_mod(&c, mod);
+    co = compiler_mod(&c, mod);
 
  finally:
-	compiler_free(&c);
-	assert(co || PyErr_Occurred());
-	return co;
+    compiler_free(&c);
+    assert(co || PyErr_Occurred());
+    return co;
 }
 
 PyCodeObject *
 PyNode_Compile(struct _node *n, const char *filename)
 {
-	PyCodeObject *co = NULL;
-	mod_ty mod;
-	PyArena *arena = PyArena_New();
-	if (!arena)
-		return NULL;
-	mod = PyAST_FromNode(n, NULL, filename, arena);
-	if (mod)
-		co = PyAST_Compile(mod, filename, NULL, arena);
-	PyArena_Free(arena);
-	return co;
+    PyCodeObject *co = NULL;
+    mod_ty mod;
+    PyArena *arena = PyArena_New();
+    if (!arena)
+        return NULL;
+    mod = PyAST_FromNode(n, NULL, filename, arena);
+    if (mod)
+        co = PyAST_Compile(mod, filename, NULL, arena);
+    PyArena_Free(arena);
+    return co;
 }
 
 static void
 compiler_free(struct compiler *c)
 {
-	if (c->c_st)
-		PySymtable_Free(c->c_st);
-	if (c->c_future)
-		PyObject_Free(c->c_future);
-	Py_DECREF(c->c_stack);
+    if (c->c_st)
+        PySymtable_Free(c->c_st);
+    if (c->c_future)
+        PyObject_Free(c->c_future);
+    Py_DECREF(c->c_stack);
 }
 
 static PyObject *
 list2dict(PyObject *list)
 {
-	Py_ssize_t i, n;
-	PyObject *v, *k;
-	PyObject *dict = PyDict_New();
-	if (!dict) return NULL;
+    Py_ssize_t i, n;
+    PyObject *v, *k;
+    PyObject *dict = PyDict_New();
+    if (!dict) return NULL;
 
-	n = PyList_Size(list);
-	for (i = 0; i < n; i++) {
-		v = PyInt_FromLong(i);
-		if (!v) {
-			Py_DECREF(dict);
-			return NULL;
-		}
-		k = PyList_GET_ITEM(list, i);
-		k = PyTuple_Pack(2, k, k->ob_type);
-		if (k == NULL || PyDict_SetItem(dict, k, v) < 0) {
-			Py_XDECREF(k);
-			Py_DECREF(v);
-			Py_DECREF(dict);
-			return NULL;
-		}
-		Py_DECREF(k);
-		Py_DECREF(v);
-	}
-	return dict;
+    n = PyList_Size(list);
+    for (i = 0; i < n; i++) {
+        v = PyInt_FromLong(i);
+        if (!v) {
+            Py_DECREF(dict);
+            return NULL;
+        }
+        k = PyList_GET_ITEM(list, i);
+        k = PyTuple_Pack(2, k, k->ob_type);
+        if (k == NULL || PyDict_SetItem(dict, k, v) < 0) {
+            Py_XDECREF(k);
+            Py_DECREF(v);
+            Py_DECREF(dict);
+            return NULL;
+        }
+        Py_DECREF(k);
+        Py_DECREF(v);
+    }
+    return dict;
 }
 
 /* Return new dict containing names from src that match scope(s).
 
 src is a symbol table dictionary.  If the scope of a name matches
-either scope_type or flag is set, insert it into the new dict.	The
+either scope_type or flag is set, insert it into the new dict.  The
 values are integers, starting at offset and increasing by one for
 each key.
 */
@@ -358,180 +358,180 @@
 static PyObject *
 dictbytype(PyObject *src, int scope_type, int flag, int offset)
 {
-	Py_ssize_t pos = 0, i = offset, scope;
-	PyObject *k, *v, *dest = PyDict_New();
+    Py_ssize_t pos = 0, i = offset, scope;
+    PyObject *k, *v, *dest = PyDict_New();
 
-	assert(offset >= 0);
-	if (dest == NULL)
-		return NULL;
+    assert(offset >= 0);
+    if (dest == NULL)
+        return NULL;
 
-	while (PyDict_Next(src, &pos, &k, &v)) {
-		/* XXX this should probably be a macro in symtable.h */
-		assert(PyInt_Check(v));
-		scope = (PyInt_AS_LONG(v) >> SCOPE_OFF) & SCOPE_MASK;
+    while (PyDict_Next(src, &pos, &k, &v)) {
+        /* XXX this should probably be a macro in symtable.h */
+        assert(PyInt_Check(v));
+        scope = (PyInt_AS_LONG(v) >> SCOPE_OFF) & SCOPE_MASK;
 
-		if (scope == scope_type || PyInt_AS_LONG(v) & flag) {
-			PyObject *tuple, *item = PyInt_FromLong(i);
-			if (item == NULL) {
-				Py_DECREF(dest);
-				return NULL;
-			}
-			i++;
-			tuple = PyTuple_Pack(2, k, k->ob_type);
-			if (!tuple || PyDict_SetItem(dest, tuple, item) < 0) {
-				Py_DECREF(item);
-				Py_DECREF(dest);
-				Py_XDECREF(tuple);
-				return NULL;
-			}
-			Py_DECREF(item);
-			Py_DECREF(tuple);
-		}
-	}
-	return dest;
+        if (scope == scope_type || PyInt_AS_LONG(v) & flag) {
+            PyObject *tuple, *item = PyInt_FromLong(i);
+            if (item == NULL) {
+                Py_DECREF(dest);
+                return NULL;
+            }
+            i++;
+            tuple = PyTuple_Pack(2, k, k->ob_type);
+            if (!tuple || PyDict_SetItem(dest, tuple, item) < 0) {
+                Py_DECREF(item);
+                Py_DECREF(dest);
+                Py_XDECREF(tuple);
+                return NULL;
+            }
+            Py_DECREF(item);
+            Py_DECREF(tuple);
+        }
+    }
+    return dest;
 }
 
 static void
 compiler_unit_check(struct compiler_unit *u)
 {
-	basicblock *block;
-	for (block = u->u_blocks; block != NULL; block = block->b_list) {
-		assert((void *)block != (void *)0xcbcbcbcb);
-		assert((void *)block != (void *)0xfbfbfbfb);
-		assert((void *)block != (void *)0xdbdbdbdb);
-		if (block->b_instr != NULL) {
-			assert(block->b_ialloc > 0);
-			assert(block->b_iused > 0);
-			assert(block->b_ialloc >= block->b_iused);
-		}
-		else {
-			assert (block->b_iused == 0);
-			assert (block->b_ialloc == 0);
-		}
-	}
+    basicblock *block;
+    for (block = u->u_blocks; block != NULL; block = block->b_list) {
+        assert((void *)block != (void *)0xcbcbcbcb);
+        assert((void *)block != (void *)0xfbfbfbfb);
+        assert((void *)block != (void *)0xdbdbdbdb);
+        if (block->b_instr != NULL) {
+            assert(block->b_ialloc > 0);
+            assert(block->b_iused > 0);
+            assert(block->b_ialloc >= block->b_iused);
+        }
+        else {
+            assert (block->b_iused == 0);
+            assert (block->b_ialloc == 0);
+        }
+    }
 }
 
 static void
 compiler_unit_free(struct compiler_unit *u)
 {
-	basicblock *b, *next;
+    basicblock *b, *next;
 
-	compiler_unit_check(u);
-	b = u->u_blocks;
-	while (b != NULL) {
-		if (b->b_instr)
-			PyObject_Free((void *)b->b_instr);
-		next = b->b_list;
-		PyObject_Free((void *)b);
-		b = next;
-	}
-	Py_CLEAR(u->u_ste);
-	Py_CLEAR(u->u_name);
-	Py_CLEAR(u->u_consts);
-	Py_CLEAR(u->u_names);
-	Py_CLEAR(u->u_varnames);
-	Py_CLEAR(u->u_freevars);
-	Py_CLEAR(u->u_cellvars);
-	Py_CLEAR(u->u_private);
-	PyObject_Free(u);
+    compiler_unit_check(u);
+    b = u->u_blocks;
+    while (b != NULL) {
+        if (b->b_instr)
+            PyObject_Free((void *)b->b_instr);
+        next = b->b_list;
+        PyObject_Free((void *)b);
+        b = next;
+    }
+    Py_CLEAR(u->u_ste);
+    Py_CLEAR(u->u_name);
+    Py_CLEAR(u->u_consts);
+    Py_CLEAR(u->u_names);
+    Py_CLEAR(u->u_varnames);
+    Py_CLEAR(u->u_freevars);
+    Py_CLEAR(u->u_cellvars);
+    Py_CLEAR(u->u_private);
+    PyObject_Free(u);
 }
 
 static int
 compiler_enter_scope(struct compiler *c, identifier name, void *key,
-		     int lineno)
+                     int lineno)
 {
-	struct compiler_unit *u;
+    struct compiler_unit *u;
 
-	u = (struct compiler_unit *)PyObject_Malloc(sizeof(
-						struct compiler_unit));
-	if (!u) {
-		PyErr_NoMemory();
-		return 0;
-	}
-	memset(u, 0, sizeof(struct compiler_unit));
-	u->u_argcount = 0;
-	u->u_ste = PySymtable_Lookup(c->c_st, key);
-	if (!u->u_ste) {
-		compiler_unit_free(u);
-		return 0;
-	}
-	Py_INCREF(name);
-	u->u_name = name;
-	u->u_varnames = list2dict(u->u_ste->ste_varnames);
-	u->u_cellvars = dictbytype(u->u_ste->ste_symbols, CELL, 0, 0);
-	if (!u->u_varnames || !u->u_cellvars) {
-		compiler_unit_free(u);
-		return 0;
-	}
+    u = (struct compiler_unit *)PyObject_Malloc(sizeof(
+                                            struct compiler_unit));
+    if (!u) {
+        PyErr_NoMemory();
+        return 0;
+    }
+    memset(u, 0, sizeof(struct compiler_unit));
+    u->u_argcount = 0;
+    u->u_ste = PySymtable_Lookup(c->c_st, key);
+    if (!u->u_ste) {
+        compiler_unit_free(u);
+        return 0;
+    }
+    Py_INCREF(name);
+    u->u_name = name;
+    u->u_varnames = list2dict(u->u_ste->ste_varnames);
+    u->u_cellvars = dictbytype(u->u_ste->ste_symbols, CELL, 0, 0);
+    if (!u->u_varnames || !u->u_cellvars) {
+        compiler_unit_free(u);
+        return 0;
+    }
 
-	u->u_freevars = dictbytype(u->u_ste->ste_symbols, FREE, DEF_FREE_CLASS,
-				   PyDict_Size(u->u_cellvars));
-	if (!u->u_freevars) {
-		compiler_unit_free(u);
-		return 0;
-	}
+    u->u_freevars = dictbytype(u->u_ste->ste_symbols, FREE, DEF_FREE_CLASS,
+                               PyDict_Size(u->u_cellvars));
+    if (!u->u_freevars) {
+        compiler_unit_free(u);
+        return 0;
+    }
 
-	u->u_blocks = NULL;
-	u->u_tmpname = 0;
-	u->u_nfblocks = 0;
-	u->u_firstlineno = lineno;
-	u->u_lineno = 0;
-	u->u_lineno_set = false;
-	u->u_consts = PyDict_New();
-	if (!u->u_consts) {
-		compiler_unit_free(u);
-		return 0;
-	}
-	u->u_names = PyDict_New();
-	if (!u->u_names) {
-		compiler_unit_free(u);
-		return 0;
-	}
+    u->u_blocks = NULL;
+    u->u_tmpname = 0;
+    u->u_nfblocks = 0;
+    u->u_firstlineno = lineno;
+    u->u_lineno = 0;
+    u->u_lineno_set = false;
+    u->u_consts = PyDict_New();
+    if (!u->u_consts) {
+        compiler_unit_free(u);
+        return 0;
+    }
+    u->u_names = PyDict_New();
+    if (!u->u_names) {
+        compiler_unit_free(u);
+        return 0;
+    }
 
-	u->u_private = NULL;
+    u->u_private = NULL;
 
-	/* Push the old compiler_unit on the stack. */
-	if (c->u) {
-		PyObject *wrapper = PyCObject_FromVoidPtr(c->u, NULL);
-		if (!wrapper || PyList_Append(c->c_stack, wrapper) < 0) {
-			Py_XDECREF(wrapper);
-			compiler_unit_free(u);
-			return 0;
-		}
-		Py_DECREF(wrapper);
-		u->u_private = c->u->u_private;
-		Py_XINCREF(u->u_private);
-	}
-	c->u = u;
+    /* Push the old compiler_unit on the stack. */
+    if (c->u) {
+        PyObject *wrapper = PyCObject_FromVoidPtr(c->u, NULL);
+        if (!wrapper || PyList_Append(c->c_stack, wrapper) < 0) {
+            Py_XDECREF(wrapper);
+            compiler_unit_free(u);
+            return 0;
+        }
+        Py_DECREF(wrapper);
+        u->u_private = c->u->u_private;
+        Py_XINCREF(u->u_private);
+    }
+    c->u = u;
 
-	c->c_nestlevel++;
-	if (compiler_use_new_block(c) == NULL)
-		return 0;
+    c->c_nestlevel++;
+    if (compiler_use_new_block(c) == NULL)
+        return 0;
 
-	return 1;
+    return 1;
 }
 
 static void
 compiler_exit_scope(struct compiler *c)
 {
-	int n;
-	PyObject *wrapper;
+    int n;
+    PyObject *wrapper;
 
-	c->c_nestlevel--;
-	compiler_unit_free(c->u);
-	/* Restore c->u to the parent unit. */
-	n = PyList_GET_SIZE(c->c_stack) - 1;
-	if (n >= 0) {
-		wrapper = PyList_GET_ITEM(c->c_stack, n);
-		c->u = (struct compiler_unit *)PyCObject_AsVoidPtr(wrapper);
-		assert(c->u);
-		/* we are deleting from a list so this really shouldn't fail */
-		if (PySequence_DelItem(c->c_stack, n) < 0)
-			Py_FatalError("compiler_exit_scope()");
-		compiler_unit_check(c->u);
-	}
-	else
-		c->u = NULL;
+    c->c_nestlevel--;
+    compiler_unit_free(c->u);
+    /* Restore c->u to the parent unit. */
+    n = PyList_GET_SIZE(c->c_stack) - 1;
+    if (n >= 0) {
+        wrapper = PyList_GET_ITEM(c->c_stack, n);
+        c->u = (struct compiler_unit *)PyCObject_AsVoidPtr(wrapper);
+        assert(c->u);
+        /* we are deleting from a list so this really shouldn't fail */
+        if (PySequence_DelItem(c->c_stack, n) < 0)
+            Py_FatalError("compiler_exit_scope()");
+        compiler_unit_check(c->u);
+    }
+    else
+        c->u = NULL;
 
 }
 
@@ -542,9 +542,9 @@
 static PyObject *
 compiler_new_tmpname(struct compiler *c)
 {
-	char tmpname[256];
-	PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]", ++c->u->u_tmpname);
-	return PyString_FromString(tmpname);
+    char tmpname[256];
+    PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]", ++c->u->u_tmpname);
+    return PyString_FromString(tmpname);
 }
 
 /* Allocate a new block and return a pointer to it.
@@ -554,50 +554,50 @@
 static basicblock *
 compiler_new_block(struct compiler *c)
 {
-	basicblock *b;
-	struct compiler_unit *u;
+    basicblock *b;
+    struct compiler_unit *u;
 
-	u = c->u;
-	b = (basicblock *)PyObject_Malloc(sizeof(basicblock));
-	if (b == NULL) {
-		PyErr_NoMemory();
-		return NULL;
-	}
-	memset((void *)b, 0, sizeof(basicblock));
-	/* Extend the singly linked list of blocks with new block. */
-	b->b_list = u->u_blocks;
-	u->u_blocks = b;
-	return b;
+    u = c->u;
+    b = (basicblock *)PyObject_Malloc(sizeof(basicblock));
+    if (b == NULL) {
+        PyErr_NoMemory();
+        return NULL;
+    }
+    memset((void *)b, 0, sizeof(basicblock));
+    /* Extend the singly linked list of blocks with new block. */
+    b->b_list = u->u_blocks;
+    u->u_blocks = b;
+    return b;
 }
 
 static basicblock *
 compiler_use_new_block(struct compiler *c)
 {
-	basicblock *block = compiler_new_block(c);
-	if (block == NULL)
-		return NULL;
-	c->u->u_curblock = block;
-	return block;
+    basicblock *block = compiler_new_block(c);
+    if (block == NULL)
+        return NULL;
+    c->u->u_curblock = block;
+    return block;
 }
 
 static basicblock *
 compiler_next_block(struct compiler *c)
 {
-	basicblock *block = compiler_new_block(c);
-	if (block == NULL)
-		return NULL;
-	c->u->u_curblock->b_next = block;
-	c->u->u_curblock = block;
-	return block;
+    basicblock *block = compiler_new_block(c);
+    if (block == NULL)
+        return NULL;
+    c->u->u_curblock->b_next = block;
+    c->u->u_curblock = block;
+    return block;
 }
 
 static basicblock *
 compiler_use_next_block(struct compiler *c, basicblock *block)
 {
-	assert(block != NULL);
-	c->u->u_curblock->b_next = block;
-	c->u->u_curblock = block;
-	return block;
+    assert(block != NULL);
+    c->u->u_curblock->b_next = block;
+    c->u->u_curblock = block;
+    return block;
 }
 
 /* Returns the offset of the next instruction in the current block's
@@ -608,44 +608,44 @@
 static int
 compiler_next_instr(struct compiler *c, basicblock *b)
 {
-	assert(b != NULL);
-	if (b->b_instr == NULL) {
-		b->b_instr = (struct instr *)PyObject_Malloc(
-				 sizeof(struct instr) * DEFAULT_BLOCK_SIZE);
-		if (b->b_instr == NULL) {
-			PyErr_NoMemory();
-			return -1;
-		}
-		b->b_ialloc = DEFAULT_BLOCK_SIZE;
-		memset((char *)b->b_instr, 0,
-		       sizeof(struct instr) * DEFAULT_BLOCK_SIZE);
-	}
-	else if (b->b_iused == b->b_ialloc) {
-		struct instr *tmp;
-		size_t oldsize, newsize;
-		oldsize = b->b_ialloc * sizeof(struct instr);
-		newsize = oldsize << 1;
+    assert(b != NULL);
+    if (b->b_instr == NULL) {
+        b->b_instr = (struct instr *)PyObject_Malloc(
+                         sizeof(struct instr) * DEFAULT_BLOCK_SIZE);
+        if (b->b_instr == NULL) {
+            PyErr_NoMemory();
+            return -1;
+        }
+        b->b_ialloc = DEFAULT_BLOCK_SIZE;
+        memset((char *)b->b_instr, 0,
+               sizeof(struct instr) * DEFAULT_BLOCK_SIZE);
+    }
+    else if (b->b_iused == b->b_ialloc) {
+        struct instr *tmp;
+        size_t oldsize, newsize;
+        oldsize = b->b_ialloc * sizeof(struct instr);
+        newsize = oldsize << 1;
 
-		if (oldsize > (PY_SIZE_MAX >> 1)) {
-			PyErr_NoMemory();
-			return -1;
-		}
+        if (oldsize > (PY_SIZE_MAX >> 1)) {
+            PyErr_NoMemory();
+            return -1;
+        }
 
-		if (newsize == 0) {
-			PyErr_NoMemory();
-			return -1;
-		}
-		b->b_ialloc <<= 1;
-		tmp = (struct instr *)PyObject_Realloc(
-						(void *)b->b_instr, newsize);
-		if (tmp == NULL) {
-			PyErr_NoMemory();
-			return -1;
-		}
-		b->b_instr = tmp;
-		memset((char *)b->b_instr + oldsize, 0, newsize - oldsize);
-	}
-	return b->b_iused++;
+        if (newsize == 0) {
+            PyErr_NoMemory();
+            return -1;
+        }
+        b->b_ialloc <<= 1;
+        tmp = (struct instr *)PyObject_Realloc(
+                                        (void *)b->b_instr, newsize);
+        if (tmp == NULL) {
+            PyErr_NoMemory();
+            return -1;
+        }
+        b->b_instr = tmp;
+        memset((char *)b->b_instr + oldsize, 0, newsize - oldsize);
+    }
+    return b->b_iused++;
 }
 
 /* Set the i_lineno member of the instruction at offset off if the
@@ -663,235 +663,235 @@
 static void
 compiler_set_lineno(struct compiler *c, int off)
 {
-	basicblock *b;
-	if (c->u->u_lineno_set)
-		return;
-	c->u->u_lineno_set = true;
-	b = c->u->u_curblock;
-	b->b_instr[off].i_lineno = c->u->u_lineno;
+    basicblock *b;
+    if (c->u->u_lineno_set)
+        return;
+    c->u->u_lineno_set = true;
+    b = c->u->u_curblock;
+    b->b_instr[off].i_lineno = c->u->u_lineno;
 }
 
 static int
 opcode_stack_effect(int opcode, int oparg)
 {
-	switch (opcode) {
-		case POP_TOP:
-			return -1;
-		case ROT_TWO:
-		case ROT_THREE:
-			return 0;
-		case DUP_TOP:
-			return 1;
-		case ROT_FOUR:
-			return 0;
+    switch (opcode) {
+        case POP_TOP:
+            return -1;
+        case ROT_TWO:
+        case ROT_THREE:
+            return 0;
+        case DUP_TOP:
+            return 1;
+        case ROT_FOUR:
+            return 0;
 
-		case UNARY_POSITIVE:
-		case UNARY_NEGATIVE:
-		case UNARY_NOT:
-		case UNARY_CONVERT:
-		case UNARY_INVERT:
-			return 0;
+        case UNARY_POSITIVE:
+        case UNARY_NEGATIVE:
+        case UNARY_NOT:
+        case UNARY_CONVERT:
+        case UNARY_INVERT:
+            return 0;
 
-		case LIST_APPEND:
-			return -2;
+        case LIST_APPEND:
+            return -2;
 
-		case BINARY_POWER:
-		case BINARY_MULTIPLY:
-		case BINARY_DIVIDE:
-		case BINARY_MODULO:
-		case BINARY_ADD:
-		case BINARY_SUBTRACT:
-		case BINARY_SUBSCR:
-		case BINARY_FLOOR_DIVIDE:
-		case BINARY_TRUE_DIVIDE:
-			return -1;
-		case INPLACE_FLOOR_DIVIDE:
-		case INPLACE_TRUE_DIVIDE:
-			return -1;
+        case BINARY_POWER:
+        case BINARY_MULTIPLY:
+        case BINARY_DIVIDE:
+        case BINARY_MODULO:
+        case BINARY_ADD:
+        case BINARY_SUBTRACT:
+        case BINARY_SUBSCR:
+        case BINARY_FLOOR_DIVIDE:
+        case BINARY_TRUE_DIVIDE:
+            return -1;
+        case INPLACE_FLOOR_DIVIDE:
+        case INPLACE_TRUE_DIVIDE:
+            return -1;
 
-		case SLICE+0:
-			return 1;
-		case SLICE+1:
-			return 0;
-		case SLICE+2:
-			return 0;
-		case SLICE+3:
-			return -1;
+        case SLICE+0:
+            return 1;
+        case SLICE+1:
+            return 0;
+        case SLICE+2:
+            return 0;
+        case SLICE+3:
+            return -1;
 
-		case STORE_SLICE+0:
-			return -2;
-		case STORE_SLICE+1:
-			return -3;
-		case STORE_SLICE+2:
-			return -3;
-		case STORE_SLICE+3:
-			return -4;
+        case STORE_SLICE+0:
+            return -2;
+        case STORE_SLICE+1:
+            return -3;
+        case STORE_SLICE+2:
+            return -3;
+        case STORE_SLICE+3:
+            return -4;
 
-		case DELETE_SLICE+0:
-			return -1;
-		case DELETE_SLICE+1:
-			return -2;
-		case DELETE_SLICE+2:
-			return -2;
-		case DELETE_SLICE+3:
-			return -3;
+        case DELETE_SLICE+0:
+            return -1;
+        case DELETE_SLICE+1:
+            return -2;
+        case DELETE_SLICE+2:
+            return -2;
+        case DELETE_SLICE+3:
+            return -3;
 
-		case INPLACE_ADD:
-		case INPLACE_SUBTRACT:
-		case INPLACE_MULTIPLY:
-		case INPLACE_DIVIDE:
-		case INPLACE_MODULO:
-			return -1;
-		case STORE_SUBSCR:
-			return -3;
-		case STORE_MAP:
-			return -2;
-		case DELETE_SUBSCR:
-			return -2;
+        case INPLACE_ADD:
+        case INPLACE_SUBTRACT:
+        case INPLACE_MULTIPLY:
+        case INPLACE_DIVIDE:
+        case INPLACE_MODULO:
+            return -1;
+        case STORE_SUBSCR:
+            return -3;
+        case STORE_MAP:
+            return -2;
+        case DELETE_SUBSCR:
+            return -2;
 
-		case BINARY_LSHIFT:
-		case BINARY_RSHIFT:
-		case BINARY_AND:
-		case BINARY_XOR:
-		case BINARY_OR:
-			return -1;
-		case INPLACE_POWER:
-			return -1;
-		case GET_ITER:
-			return 0;
+        case BINARY_LSHIFT:
+        case BINARY_RSHIFT:
+        case BINARY_AND:
+        case BINARY_XOR:
+        case BINARY_OR:
+            return -1;
+        case INPLACE_POWER:
+            return -1;
+        case GET_ITER:
+            return 0;
 
-		case PRINT_EXPR:
-			return -1;
-		case PRINT_ITEM:
-			return -1;
-		case PRINT_NEWLINE:
-			return 0;
-		case PRINT_ITEM_TO:
-			return -2;
-		case PRINT_NEWLINE_TO:
-			return -1;
-		case INPLACE_LSHIFT:
-		case INPLACE_RSHIFT:
-		case INPLACE_AND:
-		case INPLACE_XOR:
-		case INPLACE_OR:
-			return -1;
-		case BREAK_LOOP:
-			return 0;
-		case WITH_CLEANUP:
-			return -1; /* XXX Sometimes more */
-		case LOAD_LOCALS:
-			return 1;
-		case RETURN_VALUE:
-			return -1;
-		case IMPORT_STAR:
-			return -1;
-		case EXEC_STMT:
-			return -3;
-		case YIELD_VALUE:
-			return 0;
+        case PRINT_EXPR:
+            return -1;
+        case PRINT_ITEM:
+            return -1;
+        case PRINT_NEWLINE:
+            return 0;
+        case PRINT_ITEM_TO:
+            return -2;
+        case PRINT_NEWLINE_TO:
+            return -1;
+        case INPLACE_LSHIFT:
+        case INPLACE_RSHIFT:
+        case INPLACE_AND:
+        case INPLACE_XOR:
+        case INPLACE_OR:
+            return -1;
+        case BREAK_LOOP:
+            return 0;
+        case WITH_CLEANUP:
+            return -1; /* XXX Sometimes more */
+        case LOAD_LOCALS:
+            return 1;
+        case RETURN_VALUE:
+            return -1;
+        case IMPORT_STAR:
+            return -1;
+        case EXEC_STMT:
+            return -3;
+        case YIELD_VALUE:
+            return 0;
 
-		case POP_BLOCK:
-			return 0;
-		case END_FINALLY:
-			return -1; /* or -2 or -3 if exception occurred */
-		case BUILD_CLASS:
-			return -2;
+        case POP_BLOCK:
+            return 0;
+        case END_FINALLY:
+            return -1; /* or -2 or -3 if exception occurred */
+        case BUILD_CLASS:
+            return -2;
 
-		case STORE_NAME:
-			return -1;
-		case DELETE_NAME:
-			return 0;
-		case UNPACK_SEQUENCE:
-			return oparg-1;
-		case FOR_ITER:
-			return 1;
+        case STORE_NAME:
+            return -1;
+        case DELETE_NAME:
+            return 0;
+        case UNPACK_SEQUENCE:
+            return oparg-1;
+        case FOR_ITER:
+            return 1;
 
-		case STORE_ATTR:
-			return -2;
-		case DELETE_ATTR:
-			return -1;
-		case STORE_GLOBAL:
-			return -1;
-		case DELETE_GLOBAL:
-			return 0;
-		case DUP_TOPX:
-			return oparg;
-		case LOAD_CONST:
-			return 1;
-		case LOAD_NAME:
-			return 1;
-		case BUILD_TUPLE:
-		case BUILD_LIST:
-			return 1-oparg;
-		case BUILD_MAP:
-			return 1;
-		case LOAD_ATTR:
-			return 0;
-		case COMPARE_OP:
-			return -1;
-		case IMPORT_NAME:
-			return 0;
-		case IMPORT_FROM:
-			return 1;
+        case STORE_ATTR:
+            return -2;
+        case DELETE_ATTR:
+            return -1;
+        case STORE_GLOBAL:
+            return -1;
+        case DELETE_GLOBAL:
+            return 0;
+        case DUP_TOPX:
+            return oparg;
+        case LOAD_CONST:
+            return 1;
+        case LOAD_NAME:
+            return 1;
+        case BUILD_TUPLE:
+        case BUILD_LIST:
+            return 1-oparg;
+        case BUILD_MAP:
+            return 1;
+        case LOAD_ATTR:
+            return 0;
+        case COMPARE_OP:
+            return -1;
+        case IMPORT_NAME:
+            return 0;
+        case IMPORT_FROM:
+            return 1;
 
-		case JUMP_FORWARD:
-		case JUMP_IF_FALSE:
-		case JUMP_IF_TRUE:
-		case JUMP_ABSOLUTE:
-			return 0;
+        case JUMP_FORWARD:
+        case JUMP_IF_FALSE:
+        case JUMP_IF_TRUE:
+        case JUMP_ABSOLUTE:
+            return 0;
 
-		case LOAD_GLOBAL:
-			return 1;
+        case LOAD_GLOBAL:
+            return 1;
 
-		case CONTINUE_LOOP:
-			return 0;
-		case SETUP_LOOP:
-			return 0;
-		case SETUP_EXCEPT:
-		case SETUP_FINALLY:
-			return 3; /* actually pushed by an exception */
+        case CONTINUE_LOOP:
+            return 0;
+        case SETUP_LOOP:
+            return 0;
+        case SETUP_EXCEPT:
+        case SETUP_FINALLY:
+            return 3; /* actually pushed by an exception */
 
-		case LOAD_FAST:
-			return 1;
-		case STORE_FAST:
-			return -1;
-		case DELETE_FAST:
-			return 0;
+        case LOAD_FAST:
+            return 1;
+        case STORE_FAST:
+            return -1;
+        case DELETE_FAST:
+            return 0;
 
-		case RAISE_VARARGS:
-			return -oparg;
+        case RAISE_VARARGS:
+            return -oparg;
 #define NARGS(o) (((o) % 256) + 2*((o) / 256))
-		case CALL_FUNCTION:
-			return -NARGS(oparg);
-		case CALL_FUNCTION_VAR:
-		case CALL_FUNCTION_KW:
-			return -NARGS(oparg)-1;
-		case CALL_FUNCTION_VAR_KW:
-			return -NARGS(oparg)-2;
+        case CALL_FUNCTION:
+            return -NARGS(oparg);
+        case CALL_FUNCTION_VAR:
+        case CALL_FUNCTION_KW:
+            return -NARGS(oparg)-1;
+        case CALL_FUNCTION_VAR_KW:
+            return -NARGS(oparg)-2;
 #undef NARGS
-		case MAKE_FUNCTION:
-			return -oparg;
-		case BUILD_SLICE:
-			if (oparg == 3)
-				return -2;
-			else
-				return -1;
+        case MAKE_FUNCTION:
+            return -oparg;
+        case BUILD_SLICE:
+            if (oparg == 3)
+                return -2;
+            else
+                return -1;
 
-		case MAKE_CLOSURE:
-			return -oparg;
-		case LOAD_CLOSURE:
-			return 1;
-		case LOAD_DEREF:
-			return 1;
-		case STORE_DEREF:
-			return -1;
-		default:
-			fprintf(stderr, "opcode = %d\n", opcode);
-			Py_FatalError("opcode_stack_effect()");
+        case MAKE_CLOSURE:
+            return -oparg;
+        case LOAD_CLOSURE:
+            return 1;
+        case LOAD_DEREF:
+            return 1;
+        case STORE_DEREF:
+            return -1;
+        default:
+            fprintf(stderr, "opcode = %d\n", opcode);
+            Py_FatalError("opcode_stack_effect()");
 
-	}
-	return 0; /* not reachable */
+    }
+    return 0; /* not reachable */
 }
 
 /* Add an opcode with no argument.
@@ -901,116 +901,116 @@
 static int
 compiler_addop(struct compiler *c, int opcode)
 {
-	basicblock *b;
-	struct instr *i;
-	int off;
-	off = compiler_next_instr(c, c->u->u_curblock);
-	if (off < 0)
-		return 0;
-	b = c->u->u_curblock;
-	i = &b->b_instr[off];
-	i->i_opcode = opcode;
-	i->i_hasarg = 0;
-	if (opcode == RETURN_VALUE)
-		b->b_return = 1;
-	compiler_set_lineno(c, off);
-	return 1;
+    basicblock *b;
+    struct instr *i;
+    int off;
+    off = compiler_next_instr(c, c->u->u_curblock);
+    if (off < 0)
+        return 0;
+    b = c->u->u_curblock;
+    i = &b->b_instr[off];
+    i->i_opcode = opcode;
+    i->i_hasarg = 0;
+    if (opcode == RETURN_VALUE)
+        b->b_return = 1;
+    compiler_set_lineno(c, off);
+    return 1;
 }
 
 static int
 compiler_add_o(struct compiler *c, PyObject *dict, PyObject *o)
 {
-	PyObject *t, *v;
-	Py_ssize_t arg;
-	double d;
+    PyObject *t, *v;
+    Py_ssize_t arg;
+    double d;
 
-	/* necessary to make sure types aren't coerced (e.g., int and long) */
-        /* _and_ to distinguish 0.0 from -0.0 e.g. on IEEE platforms */
-        if (PyFloat_Check(o)) {
-		d = PyFloat_AS_DOUBLE(o);
-		/* all we need is to make the tuple different in either the 0.0
-		 * or -0.0 case from all others, just to avoid the "coercion".
-		 */
-		if (d == 0.0 && copysign(1.0, d) < 0.0)
-			t = PyTuple_Pack(3, o, o->ob_type, Py_None);
-		else
-			t = PyTuple_Pack(2, o, o->ob_type);
-	}
+    /* necessary to make sure types aren't coerced (e.g., int and long) */
+    /* _and_ to distinguish 0.0 from -0.0 e.g. on IEEE platforms */
+    if (PyFloat_Check(o)) {
+        d = PyFloat_AS_DOUBLE(o);
+        /* all we need is to make the tuple different in either the 0.0
+         * or -0.0 case from all others, just to avoid the "coercion".
+         */
+        if (d == 0.0 && copysign(1.0, d) < 0.0)
+            t = PyTuple_Pack(3, o, o->ob_type, Py_None);
+        else
+            t = PyTuple_Pack(2, o, o->ob_type);
+    }
 #ifndef WITHOUT_COMPLEX
-	else if (PyComplex_Check(o)) {
-		Py_complex z;
-		int real_negzero, imag_negzero;
-		/* For the complex case we must make complex(x, 0.)
-		   different from complex(x, -0.) and complex(0., y)
-		   different from complex(-0., y), for any x and y.
-		   All four complex zeros must be distinguished.*/
-		z = PyComplex_AsCComplex(o);
-		real_negzero = z.real == 0.0 && copysign(1.0, z.real) < 0.0;
-		imag_negzero = z.imag == 0.0 && copysign(1.0, z.imag) < 0.0;
-		if (real_negzero && imag_negzero) {
-			t = PyTuple_Pack(5, o, o->ob_type,
-					 Py_None, Py_None, Py_None);
-		}
-		else if (imag_negzero) {
-			t = PyTuple_Pack(4, o, o->ob_type, Py_None, Py_None);
-		}
-		else if (real_negzero) {
-			t = PyTuple_Pack(3, o, o->ob_type, Py_None);
-		}
-		else {
-			t = PyTuple_Pack(2, o, o->ob_type);
-		}
+    else if (PyComplex_Check(o)) {
+        Py_complex z;
+        int real_negzero, imag_negzero;
+        /* For the complex case we must make complex(x, 0.)
+           different from complex(x, -0.) and complex(0., y)
+           different from complex(-0., y), for any x and y.
+           All four complex zeros must be distinguished.*/
+        z = PyComplex_AsCComplex(o);
+        real_negzero = z.real == 0.0 && copysign(1.0, z.real) < 0.0;
+        imag_negzero = z.imag == 0.0 && copysign(1.0, z.imag) < 0.0;
+        if (real_negzero && imag_negzero) {
+            t = PyTuple_Pack(5, o, o->ob_type,
+                             Py_None, Py_None, Py_None);
         }
+        else if (imag_negzero) {
+            t = PyTuple_Pack(4, o, o->ob_type, Py_None, Py_None);
+        }
+        else if (real_negzero) {
+            t = PyTuple_Pack(3, o, o->ob_type, Py_None);
+        }
+        else {
+            t = PyTuple_Pack(2, o, o->ob_type);
+        }
+    }
 #endif /* WITHOUT_COMPLEX */
-	else {
-		t = PyTuple_Pack(2, o, o->ob_type);
-        }
-	if (t == NULL)
-		return -1;
+    else {
+        t = PyTuple_Pack(2, o, o->ob_type);
+    }
+    if (t == NULL)
+        return -1;
 
-	v = PyDict_GetItem(dict, t);
-	if (!v) {
-		arg = PyDict_Size(dict);
-		v = PyInt_FromLong(arg);
-		if (!v) {
-			Py_DECREF(t);
-			return -1;
-		}
-		if (PyDict_SetItem(dict, t, v) < 0) {
-			Py_DECREF(t);
-			Py_DECREF(v);
-			return -1;
-		}
-		Py_DECREF(v);
-	}
-	else
-		arg = PyInt_AsLong(v);
-	Py_DECREF(t);
-	return arg;
+    v = PyDict_GetItem(dict, t);
+    if (!v) {
+        arg = PyDict_Size(dict);
+        v = PyInt_FromLong(arg);
+        if (!v) {
+            Py_DECREF(t);
+            return -1;
+        }
+        if (PyDict_SetItem(dict, t, v) < 0) {
+            Py_DECREF(t);
+            Py_DECREF(v);
+            return -1;
+        }
+        Py_DECREF(v);
+    }
+    else
+        arg = PyInt_AsLong(v);
+    Py_DECREF(t);
+    return arg;
 }
 
 static int
 compiler_addop_o(struct compiler *c, int opcode, PyObject *dict,
-		     PyObject *o)
+                     PyObject *o)
 {
     int arg = compiler_add_o(c, dict, o);
     if (arg < 0)
-	return 0;
+    return 0;
     return compiler_addop_i(c, opcode, arg);
 }
 
 static int
 compiler_addop_name(struct compiler *c, int opcode, PyObject *dict,
-		    PyObject *o)
+                    PyObject *o)
 {
     int arg;
     PyObject *mangled = _Py_Mangle(c->u->u_private, o);
     if (!mangled)
-	return 0;
+    return 0;
     arg = compiler_add_o(c, dict, mangled);
     Py_DECREF(mangled);
     if (arg < 0)
-	return 0;
+    return 0;
     return compiler_addop_i(c, opcode, arg);
 }
 
@@ -1021,43 +1021,43 @@
 static int
 compiler_addop_i(struct compiler *c, int opcode, int oparg)
 {
-	struct instr *i;
-	int off;
-	off = compiler_next_instr(c, c->u->u_curblock);
-	if (off < 0)
-		return 0;
-	i = &c->u->u_curblock->b_instr[off];
-	i->i_opcode = opcode;
-	i->i_oparg = oparg;
-	i->i_hasarg = 1;
-	compiler_set_lineno(c, off);
-	return 1;
+    struct instr *i;
+    int off;
+    off = compiler_next_instr(c, c->u->u_curblock);
+    if (off < 0)
+        return 0;
+    i = &c->u->u_curblock->b_instr[off];
+    i->i_opcode = opcode;
+    i->i_oparg = oparg;
+    i->i_hasarg = 1;
+    compiler_set_lineno(c, off);
+    return 1;
 }
 
 static int
 compiler_addop_j(struct compiler *c, int opcode, basicblock *b, int absolute)
 {
-	struct instr *i;
-	int off;
+    struct instr *i;
+    int off;
 
-	assert(b != NULL);
-	off = compiler_next_instr(c, c->u->u_curblock);
-	if (off < 0)
-		return 0;
-	i = &c->u->u_curblock->b_instr[off];
-	i->i_opcode = opcode;
-	i->i_target = b;
-	i->i_hasarg = 1;
-	if (absolute)
-		i->i_jabs = 1;
-	else
-		i->i_jrel = 1;
-	compiler_set_lineno(c, off);
-	return 1;
+    assert(b != NULL);
+    off = compiler_next_instr(c, c->u->u_curblock);
+    if (off < 0)
+        return 0;
+    i = &c->u->u_curblock->b_instr[off];
+    i->i_opcode = opcode;
+    i->i_target = b;
+    i->i_hasarg = 1;
+    if (absolute)
+        i->i_jabs = 1;
+    else
+        i->i_jrel = 1;
+    compiler_set_lineno(c, off);
+    return 1;
 }
 
-/* The distinction between NEW_BLOCK and NEXT_BLOCK is subtle.	(I'd
-   like to find better names.)	NEW_BLOCK() creates a new block and sets
+/* The distinction between NEW_BLOCK and NEXT_BLOCK is subtle.  (I'd
+   like to find better names.)  NEW_BLOCK() creates a new block and sets
    it as the current block.  NEXT_BLOCK() also creates an implicit jump
    from the current block to the new block.
 */
@@ -1068,50 +1068,50 @@
 
 
 #define NEW_BLOCK(C) { \
-	if (compiler_use_new_block((C)) == NULL) \
-		return 0; \
+    if (compiler_use_new_block((C)) == NULL) \
+        return 0; \
 }
 
 #define NEXT_BLOCK(C) { \
-	if (compiler_next_block((C)) == NULL) \
-		return 0; \
+    if (compiler_next_block((C)) == NULL) \
+        return 0; \
 }
 
 #define ADDOP(C, OP) { \
-	if (!compiler_addop((C), (OP))) \
-		return 0; \
+    if (!compiler_addop((C), (OP))) \
+        return 0; \
 }
 
 #define ADDOP_IN_SCOPE(C, OP) { \
-	if (!compiler_addop((C), (OP))) { \
-		compiler_exit_scope(c); \
-		return 0; \
-	} \
+    if (!compiler_addop((C), (OP))) { \
+        compiler_exit_scope(c); \
+        return 0; \
+    } \
 }
 
 #define ADDOP_O(C, OP, O, TYPE) { \
-	if (!compiler_addop_o((C), (OP), (C)->u->u_ ## TYPE, (O))) \
-		return 0; \
+    if (!compiler_addop_o((C), (OP), (C)->u->u_ ## TYPE, (O))) \
+        return 0; \
 }
 
 #define ADDOP_NAME(C, OP, O, TYPE) { \
-	if (!compiler_addop_name((C), (OP), (C)->u->u_ ## TYPE, (O))) \
-		return 0; \
+    if (!compiler_addop_name((C), (OP), (C)->u->u_ ## TYPE, (O))) \
+        return 0; \
 }
 
 #define ADDOP_I(C, OP, O) { \
-	if (!compiler_addop_i((C), (OP), (O))) \
-		return 0; \
+    if (!compiler_addop_i((C), (OP), (O))) \
+        return 0; \
 }
 
 #define ADDOP_JABS(C, OP, O) { \
-	if (!compiler_addop_j((C), (OP), (O), 1)) \
-		return 0; \
+    if (!compiler_addop_j((C), (OP), (O), 1)) \
+        return 0; \
 }
 
 #define ADDOP_JREL(C, OP, O) { \
-	if (!compiler_addop_j((C), (OP), (O), 0)) \
-		return 0; \
+    if (!compiler_addop_j((C), (OP), (O), 0)) \
+        return 0; \
 }
 
 /* VISIT and VISIT_SEQ takes an ASDL type as their second argument.  They use
@@ -1119,49 +1119,49 @@
 */
 
 #define VISIT(C, TYPE, V) {\
-	if (!compiler_visit_ ## TYPE((C), (V))) \
-		return 0; \
+    if (!compiler_visit_ ## TYPE((C), (V))) \
+        return 0; \
 }
 
 #define VISIT_IN_SCOPE(C, TYPE, V) {\
-	if (!compiler_visit_ ## TYPE((C), (V))) { \
-		compiler_exit_scope(c); \
-		return 0; \
-	} \
+    if (!compiler_visit_ ## TYPE((C), (V))) { \
+        compiler_exit_scope(c); \
+        return 0; \
+    } \
 }
 
 #define VISIT_SLICE(C, V, CTX) {\
-	if (!compiler_visit_slice((C), (V), (CTX))) \
-		return 0; \
+    if (!compiler_visit_slice((C), (V), (CTX))) \
+        return 0; \
 }
 
 #define VISIT_SEQ(C, TYPE, SEQ) { \
-	int _i; \
-	asdl_seq *seq = (SEQ); /* avoid variable capture */ \
-	for (_i = 0; _i < asdl_seq_LEN(seq); _i++) { \
-		TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \
-		if (!compiler_visit_ ## TYPE((C), elt)) \
-			return 0; \
-	} \
+    int _i; \
+    asdl_seq *seq = (SEQ); /* avoid variable capture */ \
+    for (_i = 0; _i < asdl_seq_LEN(seq); _i++) { \
+        TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \
+        if (!compiler_visit_ ## TYPE((C), elt)) \
+            return 0; \
+    } \
 }
 
 #define VISIT_SEQ_IN_SCOPE(C, TYPE, SEQ) { \
-	int _i; \
-	asdl_seq *seq = (SEQ); /* avoid variable capture */ \
-	for (_i = 0; _i < asdl_seq_LEN(seq); _i++) { \
-		TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \
-		if (!compiler_visit_ ## TYPE((C), elt)) { \
-			compiler_exit_scope(c); \
-			return 0; \
-		} \
-	} \
+    int _i; \
+    asdl_seq *seq = (SEQ); /* avoid variable capture */ \
+    for (_i = 0; _i < asdl_seq_LEN(seq); _i++) { \
+        TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \
+        if (!compiler_visit_ ## TYPE((C), elt)) { \
+            compiler_exit_scope(c); \
+            return 0; \
+        } \
+    } \
 }
 
 static int
 compiler_isdocstring(stmt_ty s)
 {
     if (s->kind != Expr_kind)
-	return 0;
+    return 0;
     return s->v.Expr.value->kind == Str_kind;
 }
 
@@ -1170,67 +1170,67 @@
 static int
 compiler_body(struct compiler *c, asdl_seq *stmts)
 {
-	int i = 0;
-	stmt_ty st;
+    int i = 0;
+    stmt_ty st;
 
-	if (!asdl_seq_LEN(stmts))
-		return 1;
-	st = (stmt_ty)asdl_seq_GET(stmts, 0);
-	if (compiler_isdocstring(st) && Py_OptimizeFlag < 2) {
-		/* don't generate docstrings if -OO */
-		i = 1;
-		VISIT(c, expr, st->v.Expr.value);
-		if (!compiler_nameop(c, __doc__, Store))
-			return 0;
-	}
-	for (; i < asdl_seq_LEN(stmts); i++)
-	    VISIT(c, stmt, (stmt_ty)asdl_seq_GET(stmts, i));
-	return 1;
+    if (!asdl_seq_LEN(stmts))
+        return 1;
+    st = (stmt_ty)asdl_seq_GET(stmts, 0);
+    if (compiler_isdocstring(st) && Py_OptimizeFlag < 2) {
+        /* don't generate docstrings if -OO */
+        i = 1;
+        VISIT(c, expr, st->v.Expr.value);
+        if (!compiler_nameop(c, __doc__, Store))
+            return 0;
+    }
+    for (; i < asdl_seq_LEN(stmts); i++)
+        VISIT(c, stmt, (stmt_ty)asdl_seq_GET(stmts, i));
+    return 1;
 }
 
 static PyCodeObject *
 compiler_mod(struct compiler *c, mod_ty mod)
 {
-	PyCodeObject *co;
-	int addNone = 1;
-	static PyObject *module;
-	if (!module) {
-		module = PyString_InternFromString("<module>");
-		if (!module)
-			return NULL;
-	}
-	/* Use 0 for firstlineno initially, will fixup in assemble(). */
-	if (!compiler_enter_scope(c, module, mod, 0))
-		return NULL;
-	switch (mod->kind) {
-	case Module_kind: 
-		if (!compiler_body(c, mod->v.Module.body)) {
-			compiler_exit_scope(c);
-			return 0;
-		}
-		break;
-	case Interactive_kind:
-		c->c_interactive = 1;
-		VISIT_SEQ_IN_SCOPE(c, stmt, 
-					mod->v.Interactive.body);
-		break;
-	case Expression_kind:
-		VISIT_IN_SCOPE(c, expr, mod->v.Expression.body);
-		addNone = 0;
-		break;
-	case Suite_kind:
-		PyErr_SetString(PyExc_SystemError,
-				"suite should not be possible");
-		return 0;
-	default:
-		PyErr_Format(PyExc_SystemError,
-			     "module kind %d should not be possible",
-			     mod->kind);
-		return 0;
-	}
-	co = assemble(c, addNone);
-	compiler_exit_scope(c);
-	return co;
+    PyCodeObject *co;
+    int addNone = 1;
+    static PyObject *module;
+    if (!module) {
+        module = PyString_InternFromString("<module>");
+        if (!module)
+            return NULL;
+    }
+    /* Use 0 for firstlineno initially, will fixup in assemble(). */
+    if (!compiler_enter_scope(c, module, mod, 0))
+        return NULL;
+    switch (mod->kind) {
+    case Module_kind:
+        if (!compiler_body(c, mod->v.Module.body)) {
+            compiler_exit_scope(c);
+            return 0;
+        }
+        break;
+    case Interactive_kind:
+        c->c_interactive = 1;
+        VISIT_SEQ_IN_SCOPE(c, stmt,
+                                mod->v.Interactive.body);
+        break;
+    case Expression_kind:
+        VISIT_IN_SCOPE(c, expr, mod->v.Expression.body);
+        addNone = 0;
+        break;
+    case Suite_kind:
+        PyErr_SetString(PyExc_SystemError,
+                        "suite should not be possible");
+        return 0;
+    default:
+        PyErr_Format(PyExc_SystemError,
+                     "module kind %d should not be possible",
+                     mod->kind);
+        return 0;
+    }
+    co = assemble(c, addNone);
+    compiler_exit_scope(c);
+    return co;
 }
 
 /* The test for LOCAL must come before the test for FREE in order to
@@ -1241,24 +1241,24 @@
 static int
 get_ref_type(struct compiler *c, PyObject *name)
 {
-	int scope = PyST_GetScope(c->u->u_ste, name);
-	if (scope == 0) {
-	    char buf[350];
-	    PyOS_snprintf(buf, sizeof(buf),
-			  "unknown scope for %.100s in %.100s(%s) in %s\n"
-			  "symbols: %s\nlocals: %s\nglobals: %s\n",
-			  PyString_AS_STRING(name), 
-			  PyString_AS_STRING(c->u->u_name), 
-			  PyObject_REPR(c->u->u_ste->ste_id),
-			  c->c_filename,
-			  PyObject_REPR(c->u->u_ste->ste_symbols),
-			  PyObject_REPR(c->u->u_varnames),
-			  PyObject_REPR(c->u->u_names)
-		);
-	    Py_FatalError(buf);
-	}
+    int scope = PyST_GetScope(c->u->u_ste, name);
+    if (scope == 0) {
+        char buf[350];
+        PyOS_snprintf(buf, sizeof(buf),
+                      "unknown scope for %.100s in %.100s(%s) in %s\n"
+                      "symbols: %s\nlocals: %s\nglobals: %s\n",
+                      PyString_AS_STRING(name),
+                      PyString_AS_STRING(c->u->u_name),
+                      PyObject_REPR(c->u->u_ste->ste_id),
+                      c->c_filename,
+                      PyObject_REPR(c->u->u_ste->ste_symbols),
+                      PyObject_REPR(c->u->u_varnames),
+                      PyObject_REPR(c->u->u_names)
+        );
+        Py_FatalError(buf);
+    }
 
-	return scope;
+    return scope;
 }
 
 static int
@@ -1267,502 +1267,502 @@
     PyObject *k, *v;
     k = PyTuple_Pack(2, name, name->ob_type);
     if (k == NULL)
-	return -1;
+    return -1;
     v = PyDict_GetItem(dict, k);
     Py_DECREF(k);
     if (v == NULL)
-	return -1;
+    return -1;
     return PyInt_AS_LONG(v);
 }
 
 static int
 compiler_make_closure(struct compiler *c, PyCodeObject *co, int args)
 {
-	int i, free = PyCode_GetNumFree(co);
-	if (free == 0) {
-	    ADDOP_O(c, LOAD_CONST, (PyObject*)co, consts);
-	    ADDOP_I(c, MAKE_FUNCTION, args);
-	    return 1;
-	}
-	for (i = 0; i < free; ++i) {
-		/* Bypass com_addop_varname because it will generate
-		   LOAD_DEREF but LOAD_CLOSURE is needed. 
-		*/
-		PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i);
-		int arg, reftype;
+    int i, free = PyCode_GetNumFree(co);
+    if (free == 0) {
+        ADDOP_O(c, LOAD_CONST, (PyObject*)co, consts);
+        ADDOP_I(c, MAKE_FUNCTION, args);
+        return 1;
+    }
+    for (i = 0; i < free; ++i) {
+        /* Bypass com_addop_varname because it will generate
+           LOAD_DEREF but LOAD_CLOSURE is needed.
+        */
+        PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i);
+        int arg, reftype;
 
-		/* Special case: If a class contains a method with a
-		   free variable that has the same name as a method,
-		   the name will be considered free *and* local in the
-		   class.  It should be handled by the closure, as
-		   well as by the normal name loookup logic.
-		*/
-		reftype = get_ref_type(c, name);
-		if (reftype == CELL)
-			arg = compiler_lookup_arg(c->u->u_cellvars, name);
-		else /* (reftype == FREE) */
-			arg = compiler_lookup_arg(c->u->u_freevars, name);
-		if (arg == -1) {
-			printf("lookup %s in %s %d %d\n"
-				"freevars of %s: %s\n",
-				PyObject_REPR(name), 
-				PyString_AS_STRING(c->u->u_name), 
-				reftype, arg,
-				PyString_AS_STRING(co->co_name),
-				PyObject_REPR(co->co_freevars));
-			Py_FatalError("compiler_make_closure()");
-		}
-		ADDOP_I(c, LOAD_CLOSURE, arg);
-	}
-	ADDOP_I(c, BUILD_TUPLE, free);
-	ADDOP_O(c, LOAD_CONST, (PyObject*)co, consts);
-	ADDOP_I(c, MAKE_CLOSURE, args);
-	return 1;
+        /* Special case: If a class contains a method with a
+           free variable that has the same name as a method,
+           the name will be considered free *and* local in the
+           class.  It should be handled by the closure, as
+           well as by the normal name loookup logic.
+        */
+        reftype = get_ref_type(c, name);
+        if (reftype == CELL)
+            arg = compiler_lookup_arg(c->u->u_cellvars, name);
+        else /* (reftype == FREE) */
+            arg = compiler_lookup_arg(c->u->u_freevars, name);
+        if (arg == -1) {
+            printf("lookup %s in %s %d %d\n"
+                "freevars of %s: %s\n",
+                PyObject_REPR(name),
+                PyString_AS_STRING(c->u->u_name),
+                reftype, arg,
+                PyString_AS_STRING(co->co_name),
+                PyObject_REPR(co->co_freevars));
+            Py_FatalError("compiler_make_closure()");
+        }
+        ADDOP_I(c, LOAD_CLOSURE, arg);
+    }
+    ADDOP_I(c, BUILD_TUPLE, free);
+    ADDOP_O(c, LOAD_CONST, (PyObject*)co, consts);
+    ADDOP_I(c, MAKE_CLOSURE, args);
+    return 1;
 }
 
 static int
 compiler_decorators(struct compiler *c, asdl_seq* decos)
 {
-	int i;
+    int i;
 
-	if (!decos)
-		return 1;
+    if (!decos)
+        return 1;
 
-	for (i = 0; i < asdl_seq_LEN(decos); i++) {
-		VISIT(c, expr, (expr_ty)asdl_seq_GET(decos, i));
-	}
-	return 1;
+    for (i = 0; i < asdl_seq_LEN(decos); i++) {
+        VISIT(c, expr, (expr_ty)asdl_seq_GET(decos, i));
+    }
+    return 1;
 }
 
 static int
 compiler_arguments(struct compiler *c, arguments_ty args)
 {
-	int i;
-	int n = asdl_seq_LEN(args->args);
-	/* Correctly handle nested argument lists */
-	for (i = 0; i < n; i++) {
-		expr_ty arg = (expr_ty)asdl_seq_GET(args->args, i);
-		if (arg->kind == Tuple_kind) {
-			PyObject *id = PyString_FromFormat(".%d", i);
-			if (id == NULL) {
-				return 0;
-			}
-			if (!compiler_nameop(c, id, Load)) {
-				Py_DECREF(id);
-				return 0;
-			}
-			Py_DECREF(id);
-			VISIT(c, expr, arg);
-		}
-	}
-	return 1;
+    int i;
+    int n = asdl_seq_LEN(args->args);
+    /* Correctly handle nested argument lists */
+    for (i = 0; i < n; i++) {
+        expr_ty arg = (expr_ty)asdl_seq_GET(args->args, i);
+        if (arg->kind == Tuple_kind) {
+            PyObject *id = PyString_FromFormat(".%d", i);
+            if (id == NULL) {
+                return 0;
+            }
+            if (!compiler_nameop(c, id, Load)) {
+                Py_DECREF(id);
+                return 0;
+            }
+            Py_DECREF(id);
+            VISIT(c, expr, arg);
+        }
+    }
+    return 1;
 }
 
 static int
 compiler_function(struct compiler *c, stmt_ty s)
 {
-	PyCodeObject *co;
-	PyObject *first_const = Py_None;
-	arguments_ty args = s->v.FunctionDef.args;
-	asdl_seq* decos = s->v.FunctionDef.decorator_list;
-	stmt_ty st;
-	int i, n, docstring;
+    PyCodeObject *co;
+    PyObject *first_const = Py_None;
+    arguments_ty args = s->v.FunctionDef.args;
+    asdl_seq* decos = s->v.FunctionDef.decorator_list;
+    stmt_ty st;
+    int i, n, docstring;
 
-	assert(s->kind == FunctionDef_kind);
+    assert(s->kind == FunctionDef_kind);
 
-	if (!compiler_decorators(c, decos))
-		return 0;
-	if (args->defaults)
-		VISIT_SEQ(c, expr, args->defaults);
-	if (!compiler_enter_scope(c, s->v.FunctionDef.name, (void *)s,
-				  s->lineno))
-		return 0;
+    if (!compiler_decorators(c, decos))
+        return 0;
+    if (args->defaults)
+        VISIT_SEQ(c, expr, args->defaults);
+    if (!compiler_enter_scope(c, s->v.FunctionDef.name, (void *)s,
+                              s->lineno))
+        return 0;
 
-	st = (stmt_ty)asdl_seq_GET(s->v.FunctionDef.body, 0);
-	docstring = compiler_isdocstring(st);
-	if (docstring && Py_OptimizeFlag < 2)
-	    first_const = st->v.Expr.value->v.Str.s;
-	if (compiler_add_o(c, c->u->u_consts, first_const) < 0)	 {
-	    compiler_exit_scope(c);
-	    return 0;
-	}
+    st = (stmt_ty)asdl_seq_GET(s->v.FunctionDef.body, 0);
+    docstring = compiler_isdocstring(st);
+    if (docstring && Py_OptimizeFlag < 2)
+        first_const = st->v.Expr.value->v.Str.s;
+    if (compiler_add_o(c, c->u->u_consts, first_const) < 0)      {
+        compiler_exit_scope(c);
+        return 0;
+    }
 
-	/* unpack nested arguments */
-	compiler_arguments(c, args);
+    /* unpack nested arguments */
+    compiler_arguments(c, args);
 
-	c->u->u_argcount = asdl_seq_LEN(args->args);
-	n = asdl_seq_LEN(s->v.FunctionDef.body);
-	/* if there was a docstring, we need to skip the first statement */
-	for (i = docstring; i < n; i++) {
-		st = (stmt_ty)asdl_seq_GET(s->v.FunctionDef.body, i);
-		VISIT_IN_SCOPE(c, stmt, st);
-	}
-	co = assemble(c, 1);
-	compiler_exit_scope(c);
-	if (co == NULL)
-		return 0;
+    c->u->u_argcount = asdl_seq_LEN(args->args);
+    n = asdl_seq_LEN(s->v.FunctionDef.body);
+    /* if there was a docstring, we need to skip the first statement */
+    for (i = docstring; i < n; i++) {
+        st = (stmt_ty)asdl_seq_GET(s->v.FunctionDef.body, i);
+        VISIT_IN_SCOPE(c, stmt, st);
+    }
+    co = assemble(c, 1);
+    compiler_exit_scope(c);
+    if (co == NULL)
+        return 0;
 
-	compiler_make_closure(c, co, asdl_seq_LEN(args->defaults));
-	Py_DECREF(co);
+    compiler_make_closure(c, co, asdl_seq_LEN(args->defaults));
+    Py_DECREF(co);
 
-	for (i = 0; i < asdl_seq_LEN(decos); i++) {
-		ADDOP_I(c, CALL_FUNCTION, 1);
-	}
+    for (i = 0; i < asdl_seq_LEN(decos); i++) {
+        ADDOP_I(c, CALL_FUNCTION, 1);
+    }
 
-	return compiler_nameop(c, s->v.FunctionDef.name, Store);
+    return compiler_nameop(c, s->v.FunctionDef.name, Store);
 }
 
 static int
 compiler_class(struct compiler *c, stmt_ty s)
 {
-	int n, i;
-	PyCodeObject *co;
-	PyObject *str;
-	asdl_seq* decos = s->v.ClassDef.decorator_list;
-	
-	if (!compiler_decorators(c, decos))
-		return 0;
+    int n, i;
+    PyCodeObject *co;
+    PyObject *str;
+    asdl_seq* decos = s->v.ClassDef.decorator_list;
 
-	/* push class name on stack, needed by BUILD_CLASS */
-	ADDOP_O(c, LOAD_CONST, s->v.ClassDef.name, consts);
-	/* push the tuple of base classes on the stack */
-	n = asdl_seq_LEN(s->v.ClassDef.bases);
-	if (n > 0)
-		VISIT_SEQ(c, expr, s->v.ClassDef.bases);
-	ADDOP_I(c, BUILD_TUPLE, n);
-	if (!compiler_enter_scope(c, s->v.ClassDef.name, (void *)s,
-				  s->lineno))
-		return 0;
-	Py_XDECREF(c->u->u_private);
-	c->u->u_private = s->v.ClassDef.name;
-	Py_INCREF(c->u->u_private);
-	str = PyString_InternFromString("__name__");
-	if (!str || !compiler_nameop(c, str, Load)) {
-		Py_XDECREF(str);
-		compiler_exit_scope(c);
-		return 0;
-	}
-	
-	Py_DECREF(str);
-	str = PyString_InternFromString("__module__");
-	if (!str || !compiler_nameop(c, str, Store)) {
-		Py_XDECREF(str);
-		compiler_exit_scope(c);
-		return 0;
-	}
-	Py_DECREF(str);
+    if (!compiler_decorators(c, decos))
+        return 0;
 
-	if (!compiler_body(c, s->v.ClassDef.body)) {
-		compiler_exit_scope(c);
-		return 0;
-	}
+    /* push class name on stack, needed by BUILD_CLASS */
+    ADDOP_O(c, LOAD_CONST, s->v.ClassDef.name, consts);
+    /* push the tuple of base classes on the stack */
+    n = asdl_seq_LEN(s->v.ClassDef.bases);
+    if (n > 0)
+        VISIT_SEQ(c, expr, s->v.ClassDef.bases);
+    ADDOP_I(c, BUILD_TUPLE, n);
+    if (!compiler_enter_scope(c, s->v.ClassDef.name, (void *)s,
+                              s->lineno))
+        return 0;
+    Py_XDECREF(c->u->u_private);
+    c->u->u_private = s->v.ClassDef.name;
+    Py_INCREF(c->u->u_private);
+    str = PyString_InternFromString("__name__");
+    if (!str || !compiler_nameop(c, str, Load)) {
+        Py_XDECREF(str);
+        compiler_exit_scope(c);
+        return 0;
+    }
 
-	ADDOP_IN_SCOPE(c, LOAD_LOCALS);
-	ADDOP_IN_SCOPE(c, RETURN_VALUE);
-	co = assemble(c, 1);
-	compiler_exit_scope(c);
-	if (co == NULL)
-		return 0;
+    Py_DECREF(str);
+    str = PyString_InternFromString("__module__");
+    if (!str || !compiler_nameop(c, str, Store)) {
+        Py_XDECREF(str);
+        compiler_exit_scope(c);
+        return 0;
+    }
+    Py_DECREF(str);
 
-	compiler_make_closure(c, co, 0);
-	Py_DECREF(co);
+    if (!compiler_body(c, s->v.ClassDef.body)) {
+        compiler_exit_scope(c);
+        return 0;
+    }
 
-	ADDOP_I(c, CALL_FUNCTION, 0);
-	ADDOP(c, BUILD_CLASS);
-	/* apply decorators */
-	for (i = 0; i < asdl_seq_LEN(decos); i++) {
-		ADDOP_I(c, CALL_FUNCTION, 1);
-	}
-	if (!compiler_nameop(c, s->v.ClassDef.name, Store))
-		return 0;
-	return 1;
+    ADDOP_IN_SCOPE(c, LOAD_LOCALS);
+    ADDOP_IN_SCOPE(c, RETURN_VALUE);
+    co = assemble(c, 1);
+    compiler_exit_scope(c);
+    if (co == NULL)
+        return 0;
+
+    compiler_make_closure(c, co, 0);
+    Py_DECREF(co);
+
+    ADDOP_I(c, CALL_FUNCTION, 0);
+    ADDOP(c, BUILD_CLASS);
+    /* apply decorators */
+    for (i = 0; i < asdl_seq_LEN(decos); i++) {
+        ADDOP_I(c, CALL_FUNCTION, 1);
+    }
+    if (!compiler_nameop(c, s->v.ClassDef.name, Store))
+        return 0;
+    return 1;
 }
 
 static int
 compiler_ifexp(struct compiler *c, expr_ty e)
 {
-	basicblock *end, *next;
-	
-	assert(e->kind == IfExp_kind);
-	end = compiler_new_block(c);
-	if (end == NULL)
-		return 0;
-	next = compiler_new_block(c);
-	if (next == NULL)
-		return 0;
-	VISIT(c, expr, e->v.IfExp.test);
-	ADDOP_JREL(c, JUMP_IF_FALSE, next);
-	ADDOP(c, POP_TOP);
-	VISIT(c, expr, e->v.IfExp.body);
-	ADDOP_JREL(c, JUMP_FORWARD, end);
-	compiler_use_next_block(c, next);
-	ADDOP(c, POP_TOP);
-	VISIT(c, expr, e->v.IfExp.orelse);
-	compiler_use_next_block(c, end);
-	return 1;
+    basicblock *end, *next;
+
+    assert(e->kind == IfExp_kind);
+    end = compiler_new_block(c);
+    if (end == NULL)
+        return 0;
+    next = compiler_new_block(c);
+    if (next == NULL)
+        return 0;
+    VISIT(c, expr, e->v.IfExp.test);
+    ADDOP_JREL(c, JUMP_IF_FALSE, next);
+    ADDOP(c, POP_TOP);
+    VISIT(c, expr, e->v.IfExp.body);
+    ADDOP_JREL(c, JUMP_FORWARD, end);
+    compiler_use_next_block(c, next);
+    ADDOP(c, POP_TOP);
+    VISIT(c, expr, e->v.IfExp.orelse);
+    compiler_use_next_block(c, end);
+    return 1;
 }
 
 static int
 compiler_lambda(struct compiler *c, expr_ty e)
 {
-	PyCodeObject *co;
-	static identifier name;
-	arguments_ty args = e->v.Lambda.args;
-	assert(e->kind == Lambda_kind);
+    PyCodeObject *co;
+    static identifier name;
+    arguments_ty args = e->v.Lambda.args;
+    assert(e->kind == Lambda_kind);
 
-	if (!name) {
-		name = PyString_InternFromString("<lambda>");
-		if (!name)
-			return 0;
-	}
+    if (!name) {
+        name = PyString_InternFromString("<lambda>");
+        if (!name)
+            return 0;
+    }
 
-	if (args->defaults)
-		VISIT_SEQ(c, expr, args->defaults);
-	if (!compiler_enter_scope(c, name, (void *)e, e->lineno))
-		return 0;
+    if (args->defaults)
+        VISIT_SEQ(c, expr, args->defaults);
+    if (!compiler_enter_scope(c, name, (void *)e, e->lineno))
+        return 0;
 
-	/* unpack nested arguments */
-	compiler_arguments(c, args);
-	
-	c->u->u_argcount = asdl_seq_LEN(args->args);
-	VISIT_IN_SCOPE(c, expr, e->v.Lambda.body);
-	ADDOP_IN_SCOPE(c, RETURN_VALUE);
-	co = assemble(c, 1);
-	compiler_exit_scope(c);
-	if (co == NULL)
-		return 0;
+    /* unpack nested arguments */
+    compiler_arguments(c, args);
 
-	compiler_make_closure(c, co, asdl_seq_LEN(args->defaults));
-	Py_DECREF(co);
+    c->u->u_argcount = asdl_seq_LEN(args->args);
+    VISIT_IN_SCOPE(c, expr, e->v.Lambda.body);
+    ADDOP_IN_SCOPE(c, RETURN_VALUE);
+    co = assemble(c, 1);
+    compiler_exit_scope(c);
+    if (co == NULL)
+        return 0;
 
-	return 1;
+    compiler_make_closure(c, co, asdl_seq_LEN(args->defaults));
+    Py_DECREF(co);
+
+    return 1;
 }
 
 static int
 compiler_print(struct compiler *c, stmt_ty s)
 {
-	int i, n;
-	bool dest;
+    int i, n;
+    bool dest;
 
-	assert(s->kind == Print_kind);
-	n = asdl_seq_LEN(s->v.Print.values);
-	dest = false;
-	if (s->v.Print.dest) {
-		VISIT(c, expr, s->v.Print.dest);
-		dest = true;
-	}
-	for (i = 0; i < n; i++) {
-		expr_ty e = (expr_ty)asdl_seq_GET(s->v.Print.values, i);
-		if (dest) {
-			ADDOP(c, DUP_TOP);
-			VISIT(c, expr, e);
-			ADDOP(c, ROT_TWO);
-			ADDOP(c, PRINT_ITEM_TO);
-		}
-		else {
-			VISIT(c, expr, e);
-			ADDOP(c, PRINT_ITEM);
-		}
-	}
-	if (s->v.Print.nl) {
-		if (dest)
-			ADDOP(c, PRINT_NEWLINE_TO)
-		else
-			ADDOP(c, PRINT_NEWLINE)
-	}
-	else if (dest)
-		ADDOP(c, POP_TOP);
-	return 1;
+    assert(s->kind == Print_kind);
+    n = asdl_seq_LEN(s->v.Print.values);
+    dest = false;
+    if (s->v.Print.dest) {
+        VISIT(c, expr, s->v.Print.dest);
+        dest = true;
+    }
+    for (i = 0; i < n; i++) {
+        expr_ty e = (expr_ty)asdl_seq_GET(s->v.Print.values, i);
+        if (dest) {
+            ADDOP(c, DUP_TOP);
+            VISIT(c, expr, e);
+            ADDOP(c, ROT_TWO);
+            ADDOP(c, PRINT_ITEM_TO);
+        }
+        else {
+            VISIT(c, expr, e);
+            ADDOP(c, PRINT_ITEM);
+        }
+    }
+    if (s->v.Print.nl) {
+        if (dest)
+            ADDOP(c, PRINT_NEWLINE_TO)
+        else
+            ADDOP(c, PRINT_NEWLINE)
+    }
+    else if (dest)
+        ADDOP(c, POP_TOP);
+    return 1;
 }
 
 static int
 compiler_if(struct compiler *c, stmt_ty s)
 {
-	basicblock *end, *next;
-	int constant;
-	assert(s->kind == If_kind);
-	end = compiler_new_block(c);
-	if (end == NULL)
-		return 0;
-	next = compiler_new_block(c);
-	if (next == NULL)
-	    return 0;
-	
-	constant = expr_constant(s->v.If.test);
-	/* constant = 0: "if 0"
-	 * constant = 1: "if 1", "if 2", ...
-	 * constant = -1: rest */
-	if (constant == 0) {
-		if (s->v.If.orelse)
-			VISIT_SEQ(c, stmt, s->v.If.orelse);
-	} else if (constant == 1) {
-		VISIT_SEQ(c, stmt, s->v.If.body);
-	} else {
-		VISIT(c, expr, s->v.If.test);
-		ADDOP_JREL(c, JUMP_IF_FALSE, next);
-		ADDOP(c, POP_TOP);
-		VISIT_SEQ(c, stmt, s->v.If.body);
-		ADDOP_JREL(c, JUMP_FORWARD, end);
-		compiler_use_next_block(c, next);
-		ADDOP(c, POP_TOP);
-		if (s->v.If.orelse)
-			VISIT_SEQ(c, stmt, s->v.If.orelse);
-	}
-	compiler_use_next_block(c, end);
-	return 1;
+    basicblock *end, *next;
+    int constant;
+    assert(s->kind == If_kind);
+    end = compiler_new_block(c);
+    if (end == NULL)
+        return 0;
+    next = compiler_new_block(c);
+    if (next == NULL)
+        return 0;
+
+    constant = expr_constant(s->v.If.test);
+    /* constant = 0: "if 0"
+     * constant = 1: "if 1", "if 2", ...
+     * constant = -1: rest */
+    if (constant == 0) {
+        if (s->v.If.orelse)
+            VISIT_SEQ(c, stmt, s->v.If.orelse);
+    } else if (constant == 1) {
+        VISIT_SEQ(c, stmt, s->v.If.body);
+    } else {
+        VISIT(c, expr, s->v.If.test);
+        ADDOP_JREL(c, JUMP_IF_FALSE, next);
+        ADDOP(c, POP_TOP);
+        VISIT_SEQ(c, stmt, s->v.If.body);
+        ADDOP_JREL(c, JUMP_FORWARD, end);
+        compiler_use_next_block(c, next);
+        ADDOP(c, POP_TOP);
+        if (s->v.If.orelse)
+            VISIT_SEQ(c, stmt, s->v.If.orelse);
+    }
+    compiler_use_next_block(c, end);
+    return 1;
 }
 
 static int
 compiler_for(struct compiler *c, stmt_ty s)
 {
-	basicblock *start, *cleanup, *end;
+    basicblock *start, *cleanup, *end;
 
-	start = compiler_new_block(c);
-	cleanup = compiler_new_block(c);
-	end = compiler_new_block(c);
-	if (start == NULL || end == NULL || cleanup == NULL)
-		return 0;
-	ADDOP_JREL(c, SETUP_LOOP, end);
-	if (!compiler_push_fblock(c, LOOP, start))
-		return 0;
-	VISIT(c, expr, s->v.For.iter);
-	ADDOP(c, GET_ITER);
-	compiler_use_next_block(c, start);
-	/* for expressions must be traced on each iteration,
-	   so we need to set an extra line number. */
-	c->u->u_lineno_set = false;
-	ADDOP_JREL(c, FOR_ITER, cleanup);
-	VISIT(c, expr, s->v.For.target);
-	VISIT_SEQ(c, stmt, s->v.For.body);
-	ADDOP_JABS(c, JUMP_ABSOLUTE, start);
-	compiler_use_next_block(c, cleanup);
-	ADDOP(c, POP_BLOCK);
-	compiler_pop_fblock(c, LOOP, start);
-	VISIT_SEQ(c, stmt, s->v.For.orelse);
-	compiler_use_next_block(c, end);
-	return 1;
+    start = compiler_new_block(c);
+    cleanup = compiler_new_block(c);
+    end = compiler_new_block(c);
+    if (start == NULL || end == NULL || cleanup == NULL)
+        return 0;
+    ADDOP_JREL(c, SETUP_LOOP, end);
+    if (!compiler_push_fblock(c, LOOP, start))
+        return 0;
+    VISIT(c, expr, s->v.For.iter);
+    ADDOP(c, GET_ITER);
+    compiler_use_next_block(c, start);
+    /* for expressions must be traced on each iteration,
+       so we need to set an extra line number. */
+    c->u->u_lineno_set = false;
+    ADDOP_JREL(c, FOR_ITER, cleanup);
+    VISIT(c, expr, s->v.For.target);
+    VISIT_SEQ(c, stmt, s->v.For.body);
+    ADDOP_JABS(c, JUMP_ABSOLUTE, start);
+    compiler_use_next_block(c, cleanup);
+    ADDOP(c, POP_BLOCK);
+    compiler_pop_fblock(c, LOOP, start);
+    VISIT_SEQ(c, stmt, s->v.For.orelse);
+    compiler_use_next_block(c, end);
+    return 1;
 }
 
 static int
 compiler_while(struct compiler *c, stmt_ty s)
 {
-	basicblock *loop, *orelse, *end, *anchor = NULL;
-	int constant = expr_constant(s->v.While.test);
+    basicblock *loop, *orelse, *end, *anchor = NULL;
+    int constant = expr_constant(s->v.While.test);
 
-	if (constant == 0) {
-		if (s->v.While.orelse)
-			VISIT_SEQ(c, stmt, s->v.While.orelse);
-		return 1;
-	}
-	loop = compiler_new_block(c);
-	end = compiler_new_block(c);
-	if (constant == -1) {
-		anchor = compiler_new_block(c);
-		if (anchor == NULL)
-			return 0;
-	}
-	if (loop == NULL || end == NULL)
-		return 0;
-	if (s->v.While.orelse) {
-		orelse = compiler_new_block(c);
-		if (orelse == NULL)
-			return 0;
-	}
-	else
-		orelse = NULL;
+    if (constant == 0) {
+        if (s->v.While.orelse)
+            VISIT_SEQ(c, stmt, s->v.While.orelse);
+        return 1;
+    }
+    loop = compiler_new_block(c);
+    end = compiler_new_block(c);
+    if (constant == -1) {
+        anchor = compiler_new_block(c);
+        if (anchor == NULL)
+            return 0;
+    }
+    if (loop == NULL || end == NULL)
+        return 0;
+    if (s->v.While.orelse) {
+        orelse = compiler_new_block(c);
+        if (orelse == NULL)
+            return 0;
+    }
+    else
+        orelse = NULL;
 
-	ADDOP_JREL(c, SETUP_LOOP, end);
-	compiler_use_next_block(c, loop);
-	if (!compiler_push_fblock(c, LOOP, loop))
-		return 0;
-	if (constant == -1) {
-		/* while expressions must be traced on each iteration,
-		   so we need to set an extra line number. */
-		c->u->u_lineno_set = false;
-		VISIT(c, expr, s->v.While.test);
-		ADDOP_JREL(c, JUMP_IF_FALSE, anchor);
-		ADDOP(c, POP_TOP);
-	}
-	VISIT_SEQ(c, stmt, s->v.While.body);
-	ADDOP_JABS(c, JUMP_ABSOLUTE, loop);
+    ADDOP_JREL(c, SETUP_LOOP, end);
+    compiler_use_next_block(c, loop);
+    if (!compiler_push_fblock(c, LOOP, loop))
+        return 0;
+    if (constant == -1) {
+        /* while expressions must be traced on each iteration,
+           so we need to set an extra line number. */
+        c->u->u_lineno_set = false;
+        VISIT(c, expr, s->v.While.test);
+        ADDOP_JREL(c, JUMP_IF_FALSE, anchor);
+        ADDOP(c, POP_TOP);
+    }
+    VISIT_SEQ(c, stmt, s->v.While.body);
+    ADDOP_JABS(c, JUMP_ABSOLUTE, loop);
 
-	/* XXX should the two POP instructions be in a separate block
-	   if there is no else clause ?
-	*/
+    /* XXX should the two POP instructions be in a separate block
+       if there is no else clause ?
+    */
 
-	if (constant == -1) {
-		compiler_use_next_block(c, anchor);
-		ADDOP(c, POP_TOP);
-		ADDOP(c, POP_BLOCK);
-	}
-	compiler_pop_fblock(c, LOOP, loop);
-	if (orelse != NULL) /* what if orelse is just pass? */
-		VISIT_SEQ(c, stmt, s->v.While.orelse);
-	compiler_use_next_block(c, end);
+    if (constant == -1) {
+        compiler_use_next_block(c, anchor);
+        ADDOP(c, POP_TOP);
+        ADDOP(c, POP_BLOCK);
+    }
+    compiler_pop_fblock(c, LOOP, loop);
+    if (orelse != NULL) /* what if orelse is just pass? */
+        VISIT_SEQ(c, stmt, s->v.While.orelse);
+    compiler_use_next_block(c, end);
 
-	return 1;
+    return 1;
 }
 
 static int
 compiler_continue(struct compiler *c)
 {
-	static const char LOOP_ERROR_MSG[] = "'continue' not properly in loop";
-	static const char IN_FINALLY_ERROR_MSG[] = 
-			"'continue' not supported inside 'finally' clause";
-	int i;
+    static const char LOOP_ERROR_MSG[] = "'continue' not properly in loop";
+    static const char IN_FINALLY_ERROR_MSG[] =
+                    "'continue' not supported inside 'finally' clause";
+    int i;
 
-	if (!c->u->u_nfblocks)
-		return compiler_error(c, LOOP_ERROR_MSG);
-	i = c->u->u_nfblocks - 1;
-	switch (c->u->u_fblock[i].fb_type) {
-	case LOOP:
-		ADDOP_JABS(c, JUMP_ABSOLUTE, c->u->u_fblock[i].fb_block);
-		break;
-	case EXCEPT:
-	case FINALLY_TRY:
-		while (--i >= 0 && c->u->u_fblock[i].fb_type != LOOP) {
-			/* Prevent continue anywhere under a finally
-			      even if hidden in a sub-try or except. */
-			if (c->u->u_fblock[i].fb_type == FINALLY_END)
-				return compiler_error(c, IN_FINALLY_ERROR_MSG);
-		}
-		if (i == -1)
-			return compiler_error(c, LOOP_ERROR_MSG);
-		ADDOP_JABS(c, CONTINUE_LOOP, c->u->u_fblock[i].fb_block);
-		break;
-	case FINALLY_END:
-		return compiler_error(c, IN_FINALLY_ERROR_MSG);
-	}
+    if (!c->u->u_nfblocks)
+        return compiler_error(c, LOOP_ERROR_MSG);
+    i = c->u->u_nfblocks - 1;
+    switch (c->u->u_fblock[i].fb_type) {
+    case LOOP:
+        ADDOP_JABS(c, JUMP_ABSOLUTE, c->u->u_fblock[i].fb_block);
+        break;
+    case EXCEPT:
+    case FINALLY_TRY:
+        while (--i >= 0 && c->u->u_fblock[i].fb_type != LOOP) {
+            /* Prevent continue anywhere under a finally
+                  even if hidden in a sub-try or except. */
+            if (c->u->u_fblock[i].fb_type == FINALLY_END)
+                return compiler_error(c, IN_FINALLY_ERROR_MSG);
+        }
+        if (i == -1)
+            return compiler_error(c, LOOP_ERROR_MSG);
+        ADDOP_JABS(c, CONTINUE_LOOP, c->u->u_fblock[i].fb_block);
+        break;
+    case FINALLY_END:
+        return compiler_error(c, IN_FINALLY_ERROR_MSG);
+    }
 
-	return 1;
+    return 1;
 }
 
 /* Code generated for "try: <body> finally: <finalbody>" is as follows:
-   
-		SETUP_FINALLY	L
-		<code for body>
-		POP_BLOCK
-		LOAD_CONST	<None>
-	L:	<code for finalbody>
-		END_FINALLY
-   
+
+        SETUP_FINALLY           L
+        <code for body>
+        POP_BLOCK
+        LOAD_CONST              <None>
+    L:          <code for finalbody>
+        END_FINALLY
+
    The special instructions use the block stack.  Each block
    stack entry contains the instruction that created it (here
    SETUP_FINALLY), the level of the value stack at the time the
    block stack entry was created, and a label (here L).
-   
+
    SETUP_FINALLY:
-	Pushes the current value stack level and the label
-	onto the block stack.
+    Pushes the current value stack level and the label
+    onto the block stack.
    POP_BLOCK:
-	Pops en entry from the block stack, and pops the value
-	stack until its level is the same as indicated on the
-	block stack.  (The label is ignored.)
+    Pops en entry from the block stack, and pops the value
+    stack until its level is the same as indicated on the
+    block stack.  (The label is ignored.)
    END_FINALLY:
-	Pops a variable number of entries from the *value* stack
-	and re-raises the exception they specify.  The number of
-	entries popped depends on the (pseudo) exception type.
-   
+    Pops a variable number of entries from the *value* stack
+    and re-raises the exception they specify.  The number of
+    entries popped depends on the (pseudo) exception type.
+
    The block stack is unwound when an exception is raised:
    when a SETUP_FINALLY entry is found, the exception is pushed
    onto the value stack (and the exception condition is cleared),
@@ -1773,29 +1773,29 @@
 static int
 compiler_try_finally(struct compiler *c, stmt_ty s)
 {
-	basicblock *body, *end;
-	body = compiler_new_block(c);
-	end = compiler_new_block(c);
-	if (body == NULL || end == NULL)
-		return 0;
+    basicblock *body, *end;
+    body = compiler_new_block(c);
+    end = compiler_new_block(c);
+    if (body == NULL || end == NULL)
+        return 0;
 
-	ADDOP_JREL(c, SETUP_FINALLY, end);
-	compiler_use_next_block(c, body);
-	if (!compiler_push_fblock(c, FINALLY_TRY, body))
-		return 0;
-	VISIT_SEQ(c, stmt, s->v.TryFinally.body);
-	ADDOP(c, POP_BLOCK);
-	compiler_pop_fblock(c, FINALLY_TRY, body);
+    ADDOP_JREL(c, SETUP_FINALLY, end);
+    compiler_use_next_block(c, body);
+    if (!compiler_push_fblock(c, FINALLY_TRY, body))
+        return 0;
+    VISIT_SEQ(c, stmt, s->v.TryFinally.body);
+    ADDOP(c, POP_BLOCK);
+    compiler_pop_fblock(c, FINALLY_TRY, body);
 
-	ADDOP_O(c, LOAD_CONST, Py_None, consts);
-	compiler_use_next_block(c, end);
-	if (!compiler_push_fblock(c, FINALLY_END, end))
-		return 0;
-	VISIT_SEQ(c, stmt, s->v.TryFinally.finalbody);
-	ADDOP(c, END_FINALLY);
-	compiler_pop_fblock(c, FINALLY_END, end);
+    ADDOP_O(c, LOAD_CONST, Py_None, consts);
+    compiler_use_next_block(c, end);
+    if (!compiler_push_fblock(c, FINALLY_END, end))
+        return 0;
+    VISIT_SEQ(c, stmt, s->v.TryFinally.finalbody);
+    ADDOP(c, END_FINALLY);
+    compiler_pop_fblock(c, FINALLY_END, end);
 
-	return 1;
+    return 1;
 }
 
 /*
@@ -1803,1011 +1803,1011 @@
    (The contents of the value stack is shown in [], with the top
    at the right; 'tb' is trace-back info, 'val' the exception's
    associated value, and 'exc' the exception.)
-   
-   Value stack		Label	Instruction	Argument
-   []				SETUP_EXCEPT	L1
-   []				<code for S>
-   []				POP_BLOCK
-   []				JUMP_FORWARD	L0
-   
-   [tb, val, exc]	L1:	DUP				)
-   [tb, val, exc, exc]		<evaluate E1>			)
-   [tb, val, exc, exc, E1]	COMPARE_OP	EXC_MATCH	) only if E1
-   [tb, val, exc, 1-or-0]	JUMP_IF_FALSE	L2		)
-   [tb, val, exc, 1]		POP				)
-   [tb, val, exc]		POP
-   [tb, val]			<assign to V1>	(or POP if no V1)
-   [tb]				POP
-   []				<code for S1>
-				JUMP_FORWARD	L0
-   
-   [tb, val, exc, 0]	L2:	POP
-   [tb, val, exc]		DUP
+
+   Value stack          Label   Instruction     Argument
+   []                           SETUP_EXCEPT    L1
+   []                           <code for S>
+   []                           POP_BLOCK
+   []                           JUMP_FORWARD    L0
+
+   [tb, val, exc]       L1:     DUP                             )
+   [tb, val, exc, exc]          <evaluate E1>                   )
+   [tb, val, exc, exc, E1]      COMPARE_OP      EXC_MATCH       ) only if E1
+   [tb, val, exc, 1-or-0]       JUMP_IF_FALSE   L2              )
+   [tb, val, exc, 1]            POP                             )
+   [tb, val, exc]               POP
+   [tb, val]                    <assign to V1>  (or POP if no V1)
+   [tb]                         POP
+   []                           <code for S1>
+                                JUMP_FORWARD    L0
+
+   [tb, val, exc, 0]    L2:     POP
+   [tb, val, exc]               DUP
    .............................etc.......................
 
-   [tb, val, exc, 0]	Ln+1:	POP
-   [tb, val, exc]		END_FINALLY	# re-raise exception
-   
-   []			L0:	<next statement>
-   
+   [tb, val, exc, 0]    Ln+1:   POP
+   [tb, val, exc]               END_FINALLY     # re-raise exception
+
+   []                   L0:     <next statement>
+
    Of course, parts are not generated if Vi or Ei is not present.
 */
 static int
 compiler_try_except(struct compiler *c, stmt_ty s)
 {
-	basicblock *body, *orelse, *except, *end;
-	int i, n;
+    basicblock *body, *orelse, *except, *end;
+    int i, n;
 
-	body = compiler_new_block(c);
-	except = compiler_new_block(c);
-	orelse = compiler_new_block(c);
-	end = compiler_new_block(c);
-	if (body == NULL || except == NULL || orelse == NULL || end == NULL)
-		return 0;
-	ADDOP_JREL(c, SETUP_EXCEPT, except);
-	compiler_use_next_block(c, body);
-	if (!compiler_push_fblock(c, EXCEPT, body))
-		return 0;
-	VISIT_SEQ(c, stmt, s->v.TryExcept.body);
-	ADDOP(c, POP_BLOCK);
-	compiler_pop_fblock(c, EXCEPT, body);
-	ADDOP_JREL(c, JUMP_FORWARD, orelse);
-	n = asdl_seq_LEN(s->v.TryExcept.handlers);
-	compiler_use_next_block(c, except);
-	for (i = 0; i < n; i++) {
-		excepthandler_ty handler = (excepthandler_ty)asdl_seq_GET(
-						s->v.TryExcept.handlers, i);
-		if (!handler->v.ExceptHandler.type && i < n-1)
-		    return compiler_error(c, "default 'except:' must be last");
-		c->u->u_lineno_set = false;
-		c->u->u_lineno = handler->lineno;
-		except = compiler_new_block(c);
-		if (except == NULL)
-			return 0;
-		if (handler->v.ExceptHandler.type) {
-			ADDOP(c, DUP_TOP);
-			VISIT(c, expr, handler->v.ExceptHandler.type);
-			ADDOP_I(c, COMPARE_OP, PyCmp_EXC_MATCH);
-			ADDOP_JREL(c, JUMP_IF_FALSE, except);
-			ADDOP(c, POP_TOP);
-		}
-		ADDOP(c, POP_TOP);
-		if (handler->v.ExceptHandler.name) {
-			VISIT(c, expr, handler->v.ExceptHandler.name);
-		}
-		else {
-			ADDOP(c, POP_TOP);
-		}
-		ADDOP(c, POP_TOP);
-		VISIT_SEQ(c, stmt, handler->v.ExceptHandler.body);
-		ADDOP_JREL(c, JUMP_FORWARD, end);
-		compiler_use_next_block(c, except);
-		if (handler->v.ExceptHandler.type)
-			ADDOP(c, POP_TOP);
-	}
-	ADDOP(c, END_FINALLY);
-	compiler_use_next_block(c, orelse);
-	VISIT_SEQ(c, stmt, s->v.TryExcept.orelse);
-	compiler_use_next_block(c, end);
-	return 1;
+    body = compiler_new_block(c);
+    except = compiler_new_block(c);
+    orelse = compiler_new_block(c);
+    end = compiler_new_block(c);
+    if (body == NULL || except == NULL || orelse == NULL || end == NULL)
+        return 0;
+    ADDOP_JREL(c, SETUP_EXCEPT, except);
+    compiler_use_next_block(c, body);
+    if (!compiler_push_fblock(c, EXCEPT, body))
+        return 0;
+    VISIT_SEQ(c, stmt, s->v.TryExcept.body);
+    ADDOP(c, POP_BLOCK);
+    compiler_pop_fblock(c, EXCEPT, body);
+    ADDOP_JREL(c, JUMP_FORWARD, orelse);
+    n = asdl_seq_LEN(s->v.TryExcept.handlers);
+    compiler_use_next_block(c, except);
+    for (i = 0; i < n; i++) {
+        excepthandler_ty handler = (excepthandler_ty)asdl_seq_GET(
+                                        s->v.TryExcept.handlers, i);
+        if (!handler->v.ExceptHandler.type && i < n-1)
+            return compiler_error(c, "default 'except:' must be last");
+        c->u->u_lineno_set = false;
+        c->u->u_lineno = handler->lineno;
+        except = compiler_new_block(c);
+        if (except == NULL)
+            return 0;
+        if (handler->v.ExceptHandler.type) {
+            ADDOP(c, DUP_TOP);
+            VISIT(c, expr, handler->v.ExceptHandler.type);
+            ADDOP_I(c, COMPARE_OP, PyCmp_EXC_MATCH);
+            ADDOP_JREL(c, JUMP_IF_FALSE, except);
+            ADDOP(c, POP_TOP);
+        }
+        ADDOP(c, POP_TOP);
+        if (handler->v.ExceptHandler.name) {
+            VISIT(c, expr, handler->v.ExceptHandler.name);
+        }
+        else {
+            ADDOP(c, POP_TOP);
+        }
+        ADDOP(c, POP_TOP);
+        VISIT_SEQ(c, stmt, handler->v.ExceptHandler.body);
+        ADDOP_JREL(c, JUMP_FORWARD, end);
+        compiler_use_next_block(c, except);
+        if (handler->v.ExceptHandler.type)
+            ADDOP(c, POP_TOP);
+    }
+    ADDOP(c, END_FINALLY);
+    compiler_use_next_block(c, orelse);
+    VISIT_SEQ(c, stmt, s->v.TryExcept.orelse);
+    compiler_use_next_block(c, end);
+    return 1;
 }
 
 static int
 compiler_import_as(struct compiler *c, identifier name, identifier asname)
 {
-	/* The IMPORT_NAME opcode was already generated.  This function
-	   merely needs to bind the result to a name.
+    /* The IMPORT_NAME opcode was already generated.  This function
+       merely needs to bind the result to a name.
 
-	   If there is a dot in name, we need to split it and emit a 
-	   LOAD_ATTR for each name.
-	*/
-	const char *src = PyString_AS_STRING(name);
-	const char *dot = strchr(src, '.');
-	if (dot) {
-		/* Consume the base module name to get the first attribute */
-		src = dot + 1;
-		while (dot) {
-			/* NB src is only defined when dot != NULL */
-			PyObject *attr;
-			dot = strchr(src, '.');
-			attr = PyString_FromStringAndSize(src, 
-					    dot ? dot - src : strlen(src));
-			if (!attr)
-				return -1;
-			ADDOP_O(c, LOAD_ATTR, attr, names);
-			Py_DECREF(attr);
-			src = dot + 1;
-		}
-	}
-	return compiler_nameop(c, asname, Store);
+       If there is a dot in name, we need to split it and emit a
+       LOAD_ATTR for each name.
+    */
+    const char *src = PyString_AS_STRING(name);
+    const char *dot = strchr(src, '.');
+    if (dot) {
+        /* Consume the base module name to get the first attribute */
+        src = dot + 1;
+        while (dot) {
+            /* NB src is only defined when dot != NULL */
+            PyObject *attr;
+            dot = strchr(src, '.');
+            attr = PyString_FromStringAndSize(src,
+                                dot ? dot - src : strlen(src));
+            if (!attr)
+                return -1;
+            ADDOP_O(c, LOAD_ATTR, attr, names);
+            Py_DECREF(attr);
+            src = dot + 1;
+        }
+    }
+    return compiler_nameop(c, asname, Store);
 }
 
 static int
 compiler_import(struct compiler *c, stmt_ty s)
 {
-	/* The Import node stores a module name like a.b.c as a single
-	   string.  This is convenient for all cases except
-	     import a.b.c as d
-	   where we need to parse that string to extract the individual
-	   module names.  
-	   XXX Perhaps change the representation to make this case simpler?
-	 */
-	int i, n = asdl_seq_LEN(s->v.Import.names);
+    /* The Import node stores a module name like a.b.c as a single
+       string.  This is convenient for all cases except
+         import a.b.c as d
+       where we need to parse that string to extract the individual
+       module names.
+       XXX Perhaps change the representation to make this case simpler?
+     */
+    int i, n = asdl_seq_LEN(s->v.Import.names);
 
-	for (i = 0; i < n; i++) {
-		alias_ty alias = (alias_ty)asdl_seq_GET(s->v.Import.names, i);
-		int r;
-		PyObject *level;
+    for (i = 0; i < n; i++) {
+        alias_ty alias = (alias_ty)asdl_seq_GET(s->v.Import.names, i);
+        int r;
+        PyObject *level;
 
-		if (c->c_flags && (c->c_flags->cf_flags & CO_FUTURE_ABSOLUTE_IMPORT))
-			level = PyInt_FromLong(0);
-		else
-			level = PyInt_FromLong(-1);
+        if (c->c_flags && (c->c_flags->cf_flags & CO_FUTURE_ABSOLUTE_IMPORT))
+            level = PyInt_FromLong(0);
+        else
+            level = PyInt_FromLong(-1);
 
-		if (level == NULL)
-			return 0;
+        if (level == NULL)
+            return 0;
 
-		ADDOP_O(c, LOAD_CONST, level, consts);
-		Py_DECREF(level);
-		ADDOP_O(c, LOAD_CONST, Py_None, consts);
-		ADDOP_NAME(c, IMPORT_NAME, alias->name, names);
+        ADDOP_O(c, LOAD_CONST, level, consts);
+        Py_DECREF(level);
+        ADDOP_O(c, LOAD_CONST, Py_None, consts);
+        ADDOP_NAME(c, IMPORT_NAME, alias->name, names);
 
-		if (alias->asname) {
-			r = compiler_import_as(c, alias->name, alias->asname);
-			if (!r)
-			    return r;
-		}
-		else {
-			identifier tmp = alias->name;
-			const char *base = PyString_AS_STRING(alias->name);
-			char *dot = strchr(base, '.');
-			if (dot)
-				tmp = PyString_FromStringAndSize(base, 
-								 dot - base);
-			r = compiler_nameop(c, tmp, Store);
-			if (dot) {
-				Py_DECREF(tmp);
-			}
-			if (!r)
-				return r;
-		}
-	}
-	return 1;
+        if (alias->asname) {
+            r = compiler_import_as(c, alias->name, alias->asname);
+            if (!r)
+                return r;
+        }
+        else {
+            identifier tmp = alias->name;
+            const char *base = PyString_AS_STRING(alias->name);
+            char *dot = strchr(base, '.');
+            if (dot)
+                tmp = PyString_FromStringAndSize(base,
+                                                 dot - base);
+            r = compiler_nameop(c, tmp, Store);
+            if (dot) {
+                Py_DECREF(tmp);
+            }
+            if (!r)
+                return r;
+        }
+    }
+    return 1;
 }
 
 static int
 compiler_from_import(struct compiler *c, stmt_ty s)
 {
-	int i, n = asdl_seq_LEN(s->v.ImportFrom.names);
+    int i, n = asdl_seq_LEN(s->v.ImportFrom.names);
 
-	PyObject *names = PyTuple_New(n);
-	PyObject *level;
-	
-	if (!names)
-		return 0;
+    PyObject *names = PyTuple_New(n);
+    PyObject *level;
 
-	if (s->v.ImportFrom.level == 0 && c->c_flags &&
-	    !(c->c_flags->cf_flags & CO_FUTURE_ABSOLUTE_IMPORT))
-		level = PyInt_FromLong(-1);
-	else
-		level = PyInt_FromLong(s->v.ImportFrom.level);
+    if (!names)
+        return 0;
 
-	if (!level) {
-		Py_DECREF(names);
-		return 0;
-	}
+    if (s->v.ImportFrom.level == 0 && c->c_flags &&
+        !(c->c_flags->cf_flags & CO_FUTURE_ABSOLUTE_IMPORT))
+        level = PyInt_FromLong(-1);
+    else
+        level = PyInt_FromLong(s->v.ImportFrom.level);
 
-	/* build up the names */
-	for (i = 0; i < n; i++) {
-		alias_ty alias = (alias_ty)asdl_seq_GET(s->v.ImportFrom.names, i);
-		Py_INCREF(alias->name);
-		PyTuple_SET_ITEM(names, i, alias->name);
-	}
+    if (!level) {
+        Py_DECREF(names);
+        return 0;
+    }
 
-	if (s->lineno > c->c_future->ff_lineno) {
-		if (!strcmp(PyString_AS_STRING(s->v.ImportFrom.module),
-			    "__future__")) {
-			Py_DECREF(level);
-			Py_DECREF(names);
-			return compiler_error(c, 
-				      "from __future__ imports must occur "
-				      "at the beginning of the file");
+    /* build up the names */
+    for (i = 0; i < n; i++) {
+        alias_ty alias = (alias_ty)asdl_seq_GET(s->v.ImportFrom.names, i);
+        Py_INCREF(alias->name);
+        PyTuple_SET_ITEM(names, i, alias->name);
+    }
 
-		}
-	}
+    if (s->lineno > c->c_future->ff_lineno) {
+        if (!strcmp(PyString_AS_STRING(s->v.ImportFrom.module),
+                    "__future__")) {
+            Py_DECREF(level);
+            Py_DECREF(names);
+            return compiler_error(c,
+                          "from __future__ imports must occur "
+                          "at the beginning of the file");
 
-	ADDOP_O(c, LOAD_CONST, level, consts);
-	Py_DECREF(level);
-	ADDOP_O(c, LOAD_CONST, names, consts);
-	Py_DECREF(names);
-	ADDOP_NAME(c, IMPORT_NAME, s->v.ImportFrom.module, names);
-	for (i = 0; i < n; i++) {
-		alias_ty alias = (alias_ty)asdl_seq_GET(s->v.ImportFrom.names, i);
-		identifier store_name;
+        }
+    }
 
-		if (i == 0 && *PyString_AS_STRING(alias->name) == '*') {
-			assert(n == 1);
-			ADDOP(c, IMPORT_STAR);
-			return 1;
-		}
-		    
-		ADDOP_NAME(c, IMPORT_FROM, alias->name, names);
-		store_name = alias->name;
-		if (alias->asname)
-			store_name = alias->asname;
+    ADDOP_O(c, LOAD_CONST, level, consts);
+    Py_DECREF(level);
+    ADDOP_O(c, LOAD_CONST, names, consts);
+    Py_DECREF(names);
+    ADDOP_NAME(c, IMPORT_NAME, s->v.ImportFrom.module, names);
+    for (i = 0; i < n; i++) {
+        alias_ty alias = (alias_ty)asdl_seq_GET(s->v.ImportFrom.names, i);
+        identifier store_name;
 
-		if (!compiler_nameop(c, store_name, Store)) {
-			Py_DECREF(names);
-			return 0;
-		}
-	}
-	/* remove imported module */
-	ADDOP(c, POP_TOP);
-	return 1;
+        if (i == 0 && *PyString_AS_STRING(alias->name) == '*') {
+            assert(n == 1);
+            ADDOP(c, IMPORT_STAR);
+            return 1;
+        }
+
+        ADDOP_NAME(c, IMPORT_FROM, alias->name, names);
+        store_name = alias->name;
+        if (alias->asname)
+            store_name = alias->asname;
+
+        if (!compiler_nameop(c, store_name, Store)) {
+            Py_DECREF(names);
+            return 0;
+        }
+    }
+    /* remove imported module */
+    ADDOP(c, POP_TOP);
+    return 1;
 }
 
 static int
 compiler_assert(struct compiler *c, stmt_ty s)
 {
-	static PyObject *assertion_error = NULL;
-	basicblock *end;
+    static PyObject *assertion_error = NULL;
+    basicblock *end;
 
-	if (Py_OptimizeFlag)
-		return 1;
-	if (assertion_error == NULL) {
-		assertion_error = PyString_InternFromString("AssertionError");
-		if (assertion_error == NULL)
-			return 0;
-	}
-	if (s->v.Assert.test->kind == Tuple_kind &&
-	    asdl_seq_LEN(s->v.Assert.test->v.Tuple.elts) > 0) {
-		const char* msg =
-			"assertion is always true, perhaps remove parentheses?";
-		if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, c->c_filename,
-				       c->u->u_lineno, NULL, NULL) == -1)
-			return 0;
-	}
-	VISIT(c, expr, s->v.Assert.test);
-	end = compiler_new_block(c);
-	if (end == NULL)
-		return 0;
-	ADDOP_JREL(c, JUMP_IF_TRUE, end);
-	ADDOP(c, POP_TOP);
-	ADDOP_O(c, LOAD_GLOBAL, assertion_error, names);
-	if (s->v.Assert.msg) {
-		VISIT(c, expr, s->v.Assert.msg);
-		ADDOP_I(c, RAISE_VARARGS, 2);
-	}
-	else {
-		ADDOP_I(c, RAISE_VARARGS, 1);
-	}
-	compiler_use_next_block(c, end);
-	ADDOP(c, POP_TOP);
-	return 1;
+    if (Py_OptimizeFlag)
+        return 1;
+    if (assertion_error == NULL) {
+        assertion_error = PyString_InternFromString("AssertionError");
+        if (assertion_error == NULL)
+            return 0;
+    }
+    if (s->v.Assert.test->kind == Tuple_kind &&
+        asdl_seq_LEN(s->v.Assert.test->v.Tuple.elts) > 0) {
+        const char* msg =
+            "assertion is always true, perhaps remove parentheses?";
+        if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, c->c_filename,
+                               c->u->u_lineno, NULL, NULL) == -1)
+            return 0;
+    }
+    VISIT(c, expr, s->v.Assert.test);
+    end = compiler_new_block(c);
+    if (end == NULL)
+        return 0;
+    ADDOP_JREL(c, JUMP_IF_TRUE, end);
+    ADDOP(c, POP_TOP);
+    ADDOP_O(c, LOAD_GLOBAL, assertion_error, names);
+    if (s->v.Assert.msg) {
+        VISIT(c, expr, s->v.Assert.msg);
+        ADDOP_I(c, RAISE_VARARGS, 2);
+    }
+    else {
+        ADDOP_I(c, RAISE_VARARGS, 1);
+    }
+    compiler_use_next_block(c, end);
+    ADDOP(c, POP_TOP);
+    return 1;
 }
 
 static int
 compiler_visit_stmt(struct compiler *c, stmt_ty s)
 {
-	int i, n;
+    int i, n;
 
-	/* Always assign a lineno to the next instruction for a stmt. */
-	c->u->u_lineno = s->lineno;
-	c->u->u_lineno_set = false;
+    /* Always assign a lineno to the next instruction for a stmt. */
+    c->u->u_lineno = s->lineno;
+    c->u->u_lineno_set = false;
 
-	switch (s->kind) {
-	case FunctionDef_kind:
-		return compiler_function(c, s);
-	case ClassDef_kind:
-		return compiler_class(c, s);
-	case Return_kind:
-		if (c->u->u_ste->ste_type != FunctionBlock)
-			return compiler_error(c, "'return' outside function");
-		if (s->v.Return.value) {
-			VISIT(c, expr, s->v.Return.value);
-		}
-		else
-			ADDOP_O(c, LOAD_CONST, Py_None, consts);
-		ADDOP(c, RETURN_VALUE);
-		break;
-	case Delete_kind:
-		VISIT_SEQ(c, expr, s->v.Delete.targets)
-		break;
-	case Assign_kind:
-		n = asdl_seq_LEN(s->v.Assign.targets);
-		VISIT(c, expr, s->v.Assign.value);
-		for (i = 0; i < n; i++) {
-			if (i < n - 1)
-				ADDOP(c, DUP_TOP);
-			VISIT(c, expr,
-			      (expr_ty)asdl_seq_GET(s->v.Assign.targets, i));
-		}
-		break;
-	case AugAssign_kind:
-		return compiler_augassign(c, s);
-	case Print_kind:
-		return compiler_print(c, s);
-	case For_kind:
-		return compiler_for(c, s);
-	case While_kind:
-		return compiler_while(c, s);
-	case If_kind:
-		return compiler_if(c, s);
-	case Raise_kind:
-		n = 0;
-		if (s->v.Raise.type) {
-			VISIT(c, expr, s->v.Raise.type);
-			n++;
-			if (s->v.Raise.inst) {
-				VISIT(c, expr, s->v.Raise.inst);
-				n++;
-				if (s->v.Raise.tback) {
-					VISIT(c, expr, s->v.Raise.tback);
-					n++;
-				}
-			}
-		}
-		ADDOP_I(c, RAISE_VARARGS, n);
-		break;
-	case TryExcept_kind:
-		return compiler_try_except(c, s);
-	case TryFinally_kind:
-		return compiler_try_finally(c, s);
-	case Assert_kind:
-		return compiler_assert(c, s);
-	case Import_kind:
-		return compiler_import(c, s);
-	case ImportFrom_kind:
-		return compiler_from_import(c, s);
-	case Exec_kind:
-		VISIT(c, expr, s->v.Exec.body);
-		if (s->v.Exec.globals) {
-			VISIT(c, expr, s->v.Exec.globals);
-			if (s->v.Exec.locals) {
-				VISIT(c, expr, s->v.Exec.locals);
-			} else {
-				ADDOP(c, DUP_TOP);
-			}
-		} else {
-			ADDOP_O(c, LOAD_CONST, Py_None, consts);
-			ADDOP(c, DUP_TOP);
-		}
-		ADDOP(c, EXEC_STMT);
-		break;
-	case Global_kind:
-		break;
-	case Expr_kind:
-		if (c->c_interactive && c->c_nestlevel <= 1) {
-			VISIT(c, expr, s->v.Expr.value);
-			ADDOP(c, PRINT_EXPR);
-		}
-		else if (s->v.Expr.value->kind != Str_kind &&
-			 s->v.Expr.value->kind != Num_kind) {
-			VISIT(c, expr, s->v.Expr.value);
-			ADDOP(c, POP_TOP);
-		}
-		break;
-	case Pass_kind:
-		break;
-	case Break_kind:
-		if (!compiler_in_loop(c))
-			return compiler_error(c, "'break' outside loop");
-		ADDOP(c, BREAK_LOOP);
-		break;
-	case Continue_kind:
-		return compiler_continue(c);
-	case With_kind:
-		return compiler_with(c, s);
-	}
-	return 1;
+    switch (s->kind) {
+    case FunctionDef_kind:
+        return compiler_function(c, s);
+    case ClassDef_kind:
+        return compiler_class(c, s);
+    case Return_kind:
+        if (c->u->u_ste->ste_type != FunctionBlock)
+            return compiler_error(c, "'return' outside function");
+        if (s->v.Return.value) {
+            VISIT(c, expr, s->v.Return.value);
+        }
+        else
+            ADDOP_O(c, LOAD_CONST, Py_None, consts);
+        ADDOP(c, RETURN_VALUE);
+        break;
+    case Delete_kind:
+        VISIT_SEQ(c, expr, s->v.Delete.targets)
+        break;
+    case Assign_kind:
+        n = asdl_seq_LEN(s->v.Assign.targets);
+        VISIT(c, expr, s->v.Assign.value);
+        for (i = 0; i < n; i++) {
+            if (i < n - 1)
+                ADDOP(c, DUP_TOP);
+            VISIT(c, expr,
+                  (expr_ty)asdl_seq_GET(s->v.Assign.targets, i));
+        }
+        break;
+    case AugAssign_kind:
+        return compiler_augassign(c, s);
+    case Print_kind:
+        return compiler_print(c, s);
+    case For_kind:
+        return compiler_for(c, s);
+    case While_kind:
+        return compiler_while(c, s);
+    case If_kind:
+        return compiler_if(c, s);
+    case Raise_kind:
+        n = 0;
+        if (s->v.Raise.type) {
+            VISIT(c, expr, s->v.Raise.type);
+            n++;
+            if (s->v.Raise.inst) {
+                VISIT(c, expr, s->v.Raise.inst);
+                n++;
+                if (s->v.Raise.tback) {
+                    VISIT(c, expr, s->v.Raise.tback);
+                    n++;
+                }
+            }
+        }
+        ADDOP_I(c, RAISE_VARARGS, n);
+        break;
+    case TryExcept_kind:
+        return compiler_try_except(c, s);
+    case TryFinally_kind:
+        return compiler_try_finally(c, s);
+    case Assert_kind:
+        return compiler_assert(c, s);
+    case Import_kind:
+        return compiler_import(c, s);
+    case ImportFrom_kind:
+        return compiler_from_import(c, s);
+    case Exec_kind:
+        VISIT(c, expr, s->v.Exec.body);
+        if (s->v.Exec.globals) {
+            VISIT(c, expr, s->v.Exec.globals);
+            if (s->v.Exec.locals) {
+                VISIT(c, expr, s->v.Exec.locals);
+            } else {
+                ADDOP(c, DUP_TOP);
+            }
+        } else {
+            ADDOP_O(c, LOAD_CONST, Py_None, consts);
+            ADDOP(c, DUP_TOP);
+        }
+        ADDOP(c, EXEC_STMT);
+        break;
+    case Global_kind:
+        break;
+    case Expr_kind:
+        if (c->c_interactive && c->c_nestlevel <= 1) {
+            VISIT(c, expr, s->v.Expr.value);
+            ADDOP(c, PRINT_EXPR);
+        }
+        else if (s->v.Expr.value->kind != Str_kind &&
+                 s->v.Expr.value->kind != Num_kind) {
+            VISIT(c, expr, s->v.Expr.value);
+            ADDOP(c, POP_TOP);
+        }
+        break;
+    case Pass_kind:
+        break;
+    case Break_kind:
+        if (!compiler_in_loop(c))
+            return compiler_error(c, "'break' outside loop");
+        ADDOP(c, BREAK_LOOP);
+        break;
+    case Continue_kind:
+        return compiler_continue(c);
+    case With_kind:
+        return compiler_with(c, s);
+    }
+    return 1;
 }
 
 static int
 unaryop(unaryop_ty op)
 {
-	switch (op) {
-	case Invert:
-		return UNARY_INVERT;
-	case Not:
-		return UNARY_NOT;
-	case UAdd:
-		return UNARY_POSITIVE;
-	case USub:
-		return UNARY_NEGATIVE;
-	default:
-		PyErr_Format(PyExc_SystemError,
-			"unary op %d should not be possible", op);
-		return 0;
-	}
+    switch (op) {
+    case Invert:
+        return UNARY_INVERT;
+    case Not:
+        return UNARY_NOT;
+    case UAdd:
+        return UNARY_POSITIVE;
+    case USub:
+        return UNARY_NEGATIVE;
+    default:
+        PyErr_Format(PyExc_SystemError,
+            "unary op %d should not be possible", op);
+        return 0;
+    }
 }
 
 static int
 binop(struct compiler *c, operator_ty op)
 {
-	switch (op) {
-	case Add:
-		return BINARY_ADD;
-	case Sub:
-		return BINARY_SUBTRACT;
-	case Mult:
-		return BINARY_MULTIPLY;
-	case Div:
-		if (c->c_flags && c->c_flags->cf_flags & CO_FUTURE_DIVISION)
-			return BINARY_TRUE_DIVIDE;
-		else
-			return BINARY_DIVIDE;
-	case Mod:
-		return BINARY_MODULO;
-	case Pow:
-		return BINARY_POWER;
-	case LShift:
-		return BINARY_LSHIFT;
-	case RShift:
-		return BINARY_RSHIFT;
-	case BitOr:
-		return BINARY_OR;
-	case BitXor:
-		return BINARY_XOR;
-	case BitAnd:
-		return BINARY_AND;
-	case FloorDiv:
-		return BINARY_FLOOR_DIVIDE;
-	default:
-		PyErr_Format(PyExc_SystemError,
-			"binary op %d should not be possible", op);
-		return 0;
-	}
+    switch (op) {
+    case Add:
+        return BINARY_ADD;
+    case Sub:
+        return BINARY_SUBTRACT;
+    case Mult:
+        return BINARY_MULTIPLY;
+    case Div:
+        if (c->c_flags && c->c_flags->cf_flags & CO_FUTURE_DIVISION)
+            return BINARY_TRUE_DIVIDE;
+        else
+            return BINARY_DIVIDE;
+    case Mod:
+        return BINARY_MODULO;
+    case Pow:
+        return BINARY_POWER;
+    case LShift:
+        return BINARY_LSHIFT;
+    case RShift:
+        return BINARY_RSHIFT;
+    case BitOr:
+        return BINARY_OR;
+    case BitXor:
+        return BINARY_XOR;
+    case BitAnd:
+        return BINARY_AND;
+    case FloorDiv:
+        return BINARY_FLOOR_DIVIDE;
+    default:
+        PyErr_Format(PyExc_SystemError,
+            "binary op %d should not be possible", op);
+        return 0;
+    }
 }
 
 static int
 cmpop(cmpop_ty op)
 {
-	switch (op) {
-	case Eq:
-		return PyCmp_EQ;
-	case NotEq:
-		return PyCmp_NE;
-	case Lt:
-		return PyCmp_LT;
-	case LtE:
-		return PyCmp_LE;
-	case Gt:
-		return PyCmp_GT;
-	case GtE:
-		return PyCmp_GE;
-	case Is:
-		return PyCmp_IS;
-	case IsNot:
-		return PyCmp_IS_NOT;
-	case In:
-		return PyCmp_IN;
-	case NotIn:
-		return PyCmp_NOT_IN;
-	default:
-		return PyCmp_BAD;
-	}
+    switch (op) {
+    case Eq:
+        return PyCmp_EQ;
+    case NotEq:
+        return PyCmp_NE;
+    case Lt:
+        return PyCmp_LT;
+    case LtE:
+        return PyCmp_LE;
+    case Gt:
+        return PyCmp_GT;
+    case GtE:
+        return PyCmp_GE;
+    case Is:
+        return PyCmp_IS;
+    case IsNot:
+        return PyCmp_IS_NOT;
+    case In:
+        return PyCmp_IN;
+    case NotIn:
+        return PyCmp_NOT_IN;
+    default:
+        return PyCmp_BAD;
+    }
 }
 
 static int
 inplace_binop(struct compiler *c, operator_ty op)
 {
-	switch (op) {
-	case Add:
-		return INPLACE_ADD;
-	case Sub:
-		return INPLACE_SUBTRACT;
-	case Mult:
-		return INPLACE_MULTIPLY;
-	case Div:
-		if (c->c_flags && c->c_flags->cf_flags & CO_FUTURE_DIVISION)
-			return INPLACE_TRUE_DIVIDE;
-		else
-			return INPLACE_DIVIDE;
-	case Mod:
-		return INPLACE_MODULO;
-	case Pow:
-		return INPLACE_POWER;
-	case LShift:
-		return INPLACE_LSHIFT;
-	case RShift:
-		return INPLACE_RSHIFT;
-	case BitOr:
-		return INPLACE_OR;
-	case BitXor:
-		return INPLACE_XOR;
-	case BitAnd:
-		return INPLACE_AND;
-	case FloorDiv:
-		return INPLACE_FLOOR_DIVIDE;
-	default:
-		PyErr_Format(PyExc_SystemError,
-			"inplace binary op %d should not be possible", op);
-		return 0;
-	}
+    switch (op) {
+    case Add:
+        return INPLACE_ADD;
+    case Sub:
+        return INPLACE_SUBTRACT;
+    case Mult:
+        return INPLACE_MULTIPLY;
+    case Div:
+        if (c->c_flags && c->c_flags->cf_flags & CO_FUTURE_DIVISION)
+            return INPLACE_TRUE_DIVIDE;
+        else
+            return INPLACE_DIVIDE;
+    case Mod:
+        return INPLACE_MODULO;
+    case Pow:
+        return INPLACE_POWER;
+    case LShift:
+        return INPLACE_LSHIFT;
+    case RShift:
+        return INPLACE_RSHIFT;
+    case BitOr:
+        return INPLACE_OR;
+    case BitXor:
+        return INPLACE_XOR;
+    case BitAnd:
+        return INPLACE_AND;
+    case FloorDiv:
+        return INPLACE_FLOOR_DIVIDE;
+    default:
+        PyErr_Format(PyExc_SystemError,
+            "inplace binary op %d should not be possible", op);
+        return 0;
+    }
 }
 
 static int
 compiler_nameop(struct compiler *c, identifier name, expr_context_ty ctx)
 {
-	int op, scope, arg;
-	enum { OP_FAST, OP_GLOBAL, OP_DEREF, OP_NAME } optype;
+    int op, scope, arg;
+    enum { OP_FAST, OP_GLOBAL, OP_DEREF, OP_NAME } optype;
 
-	PyObject *dict = c->u->u_names;
-	PyObject *mangled;
-	/* XXX AugStore isn't used anywhere! */
+    PyObject *dict = c->u->u_names;
+    PyObject *mangled;
+    /* XXX AugStore isn't used anywhere! */
 
-	/* First check for assignment to __debug__. Param? */
-	if ((ctx == Store || ctx == AugStore || ctx == Del)
-	    && !strcmp(PyString_AS_STRING(name), "__debug__")) {
-		return compiler_error(c, "can not assign to __debug__");
-	}
+    /* First check for assignment to __debug__. Param? */
+    if ((ctx == Store || ctx == AugStore || ctx == Del)
+        && !strcmp(PyString_AS_STRING(name), "__debug__")) {
+        return compiler_error(c, "can not assign to __debug__");
+    }
 
-	mangled = _Py_Mangle(c->u->u_private, name);
-	if (!mangled)
-		return 0;
+    mangled = _Py_Mangle(c->u->u_private, name);
+    if (!mangled)
+        return 0;
 
-	op = 0;
-	optype = OP_NAME;
-	scope = PyST_GetScope(c->u->u_ste, mangled);
-	switch (scope) {
-	case FREE:
-		dict = c->u->u_freevars;
-		optype = OP_DEREF;
-		break;
-	case CELL:
-		dict = c->u->u_cellvars;
-		optype = OP_DEREF;
-		break;
-	case LOCAL:
-		if (c->u->u_ste->ste_type == FunctionBlock)
-			optype = OP_FAST;
-		break;
-	case GLOBAL_IMPLICIT:
-		if (c->u->u_ste->ste_type == FunctionBlock &&
-			!c->u->u_ste->ste_unoptimized)
-			optype = OP_GLOBAL;
-		break;
-	case GLOBAL_EXPLICIT:
-		optype = OP_GLOBAL;
-		break;
-	default:
-		/* scope can be 0 */
-		break;
-	}
+    op = 0;
+    optype = OP_NAME;
+    scope = PyST_GetScope(c->u->u_ste, mangled);
+    switch (scope) {
+    case FREE:
+        dict = c->u->u_freevars;
+        optype = OP_DEREF;
+        break;
+    case CELL:
+        dict = c->u->u_cellvars;
+        optype = OP_DEREF;
+        break;
+    case LOCAL:
+        if (c->u->u_ste->ste_type == FunctionBlock)
+            optype = OP_FAST;
+        break;
+    case GLOBAL_IMPLICIT:
+        if (c->u->u_ste->ste_type == FunctionBlock &&
+            !c->u->u_ste->ste_unoptimized)
+            optype = OP_GLOBAL;
+        break;
+    case GLOBAL_EXPLICIT:
+        optype = OP_GLOBAL;
+        break;
+    default:
+        /* scope can be 0 */
+        break;
+    }
 
-	/* XXX Leave assert here, but handle __doc__ and the like better */
-	assert(scope || PyString_AS_STRING(name)[0] == '_');
+    /* XXX Leave assert here, but handle __doc__ and the like better */
+    assert(scope || PyString_AS_STRING(name)[0] == '_');
 
-	switch (optype) {
-	case OP_DEREF:
-		switch (ctx) {
-		case Load: op = LOAD_DEREF; break;
-		case Store: op = STORE_DEREF; break;
-		case AugLoad:
-		case AugStore:
-			break;
-		case Del:
-			PyErr_Format(PyExc_SyntaxError,
-				     "can not delete variable '%s' referenced "
-				     "in nested scope",
-				     PyString_AS_STRING(name));
-			Py_DECREF(mangled);
-			return 0;
-		case Param:
-		default:
-			PyErr_SetString(PyExc_SystemError,
-					"param invalid for deref variable");
-			return 0;
-		}
-		break;
-	case OP_FAST:
-		switch (ctx) {
-		case Load: op = LOAD_FAST; break;
-		case Store: op = STORE_FAST; break;
-		case Del: op = DELETE_FAST; break;
-		case AugLoad:
-		case AugStore:
-			break;
-		case Param:
-		default:
-			PyErr_SetString(PyExc_SystemError,
-					"param invalid for local variable");
-			return 0;
-		}
-		ADDOP_O(c, op, mangled, varnames);
-		Py_DECREF(mangled);
-		return 1;
-	case OP_GLOBAL:
-		switch (ctx) {
-		case Load: op = LOAD_GLOBAL; break;
-		case Store: op = STORE_GLOBAL; break;
-		case Del: op = DELETE_GLOBAL; break;
-		case AugLoad:
-		case AugStore:
-			break;
-		case Param:
-		default:
-			PyErr_SetString(PyExc_SystemError,
-					"param invalid for global variable");
-			return 0;
-		}
-		break;
-	case OP_NAME:
-		switch (ctx) {
-		case Load: op = LOAD_NAME; break;
-		case Store: op = STORE_NAME; break;
-		case Del: op = DELETE_NAME; break;
-		case AugLoad:
-		case AugStore:
-			break;
-		case Param:
-		default:
-			PyErr_SetString(PyExc_SystemError,
-					"param invalid for name variable");
-			return 0;
-		}
-		break;
-	}
+    switch (optype) {
+    case OP_DEREF:
+        switch (ctx) {
+        case Load: op = LOAD_DEREF; break;
+        case Store: op = STORE_DEREF; break;
+        case AugLoad:
+        case AugStore:
+            break;
+        case Del:
+            PyErr_Format(PyExc_SyntaxError,
+                         "can not delete variable '%s' referenced "
+                         "in nested scope",
+                         PyString_AS_STRING(name));
+            Py_DECREF(mangled);
+            return 0;
+        case Param:
+        default:
+            PyErr_SetString(PyExc_SystemError,
+                            "param invalid for deref variable");
+            return 0;
+        }
+        break;
+    case OP_FAST:
+        switch (ctx) {
+        case Load: op = LOAD_FAST; break;
+        case Store: op = STORE_FAST; break;
+        case Del: op = DELETE_FAST; break;
+        case AugLoad:
+        case AugStore:
+            break;
+        case Param:
+        default:
+            PyErr_SetString(PyExc_SystemError,
+                            "param invalid for local variable");
+            return 0;
+        }
+        ADDOP_O(c, op, mangled, varnames);
+        Py_DECREF(mangled);
+        return 1;
+    case OP_GLOBAL:
+        switch (ctx) {
+        case Load: op = LOAD_GLOBAL; break;
+        case Store: op = STORE_GLOBAL; break;
+        case Del: op = DELETE_GLOBAL; break;
+        case AugLoad:
+        case AugStore:
+            break;
+        case Param:
+        default:
+            PyErr_SetString(PyExc_SystemError,
+                            "param invalid for global variable");
+            return 0;
+        }
+        break;
+    case OP_NAME:
+        switch (ctx) {
+        case Load: op = LOAD_NAME; break;
+        case Store: op = STORE_NAME; break;
+        case Del: op = DELETE_NAME; break;
+        case AugLoad:
+        case AugStore:
+            break;
+        case Param:
+        default:
+            PyErr_SetString(PyExc_SystemError,
+                            "param invalid for name variable");
+            return 0;
+        }
+        break;
+    }
 
-	assert(op);
-	arg = compiler_add_o(c, dict, mangled);
-	Py_DECREF(mangled);
-	if (arg < 0)
-		return 0;
-	return compiler_addop_i(c, op, arg);
+    assert(op);
+    arg = compiler_add_o(c, dict, mangled);
+    Py_DECREF(mangled);
+    if (arg < 0)
+        return 0;
+    return compiler_addop_i(c, op, arg);
 }
 
 static int
 compiler_boolop(struct compiler *c, expr_ty e)
 {
-	basicblock *end;
-	int jumpi, i, n;
-	asdl_seq *s;
+    basicblock *end;
+    int jumpi, i, n;
+    asdl_seq *s;
 
-	assert(e->kind == BoolOp_kind);
-	if (e->v.BoolOp.op == And)
-		jumpi = JUMP_IF_FALSE;
-	else
-		jumpi = JUMP_IF_TRUE;
-	end = compiler_new_block(c);
-	if (end == NULL)
-		return 0;
-	s = e->v.BoolOp.values;
-	n = asdl_seq_LEN(s) - 1;
-	assert(n >= 0);
-	for (i = 0; i < n; ++i) {
-		VISIT(c, expr, (expr_ty)asdl_seq_GET(s, i));
-		ADDOP_JREL(c, jumpi, end);
-		ADDOP(c, POP_TOP)
-	}
-	VISIT(c, expr, (expr_ty)asdl_seq_GET(s, n));
-	compiler_use_next_block(c, end);
-	return 1;
+    assert(e->kind == BoolOp_kind);
+    if (e->v.BoolOp.op == And)
+        jumpi = JUMP_IF_FALSE;
+    else
+        jumpi = JUMP_IF_TRUE;
+    end = compiler_new_block(c);
+    if (end == NULL)
+        return 0;
+    s = e->v.BoolOp.values;
+    n = asdl_seq_LEN(s) - 1;
+    assert(n >= 0);
+    for (i = 0; i < n; ++i) {
+        VISIT(c, expr, (expr_ty)asdl_seq_GET(s, i));
+        ADDOP_JREL(c, jumpi, end);
+        ADDOP(c, POP_TOP)
+    }
+    VISIT(c, expr, (expr_ty)asdl_seq_GET(s, n));
+    compiler_use_next_block(c, end);
+    return 1;
 }
 
 static int
 compiler_list(struct compiler *c, expr_ty e)
 {
-	int n = asdl_seq_LEN(e->v.List.elts);
-	if (e->v.List.ctx == Store) {
-		ADDOP_I(c, UNPACK_SEQUENCE, n);
-	}
-	VISIT_SEQ(c, expr, e->v.List.elts);
-	if (e->v.List.ctx == Load) {
-		ADDOP_I(c, BUILD_LIST, n);
-	}
-	return 1;
+    int n = asdl_seq_LEN(e->v.List.elts);
+    if (e->v.List.ctx == Store) {
+        ADDOP_I(c, UNPACK_SEQUENCE, n);
+    }
+    VISIT_SEQ(c, expr, e->v.List.elts);
+    if (e->v.List.ctx == Load) {
+        ADDOP_I(c, BUILD_LIST, n);
+    }
+    return 1;
 }
 
 static int
 compiler_tuple(struct compiler *c, expr_ty e)
 {
-	int n = asdl_seq_LEN(e->v.Tuple.elts);
-	if (e->v.Tuple.ctx == Store) {
-		ADDOP_I(c, UNPACK_SEQUENCE, n);
-	}
-	VISIT_SEQ(c, expr, e->v.Tuple.elts);
-	if (e->v.Tuple.ctx == Load) {
-		ADDOP_I(c, BUILD_TUPLE, n);
-	}
-	return 1;
+    int n = asdl_seq_LEN(e->v.Tuple.elts);
+    if (e->v.Tuple.ctx == Store) {
+        ADDOP_I(c, UNPACK_SEQUENCE, n);
+    }
+    VISIT_SEQ(c, expr, e->v.Tuple.elts);
+    if (e->v.Tuple.ctx == Load) {
+        ADDOP_I(c, BUILD_TUPLE, n);
+    }
+    return 1;
 }
 
 static int
 compiler_compare(struct compiler *c, expr_ty e)
 {
-	int i, n;
-	basicblock *cleanup = NULL;
+    int i, n;
+    basicblock *cleanup = NULL;
 
-	/* XXX the logic can be cleaned up for 1 or multiple comparisons */
-	VISIT(c, expr, e->v.Compare.left);
-	n = asdl_seq_LEN(e->v.Compare.ops);
-	assert(n > 0);
-	if (n > 1) {
-		cleanup = compiler_new_block(c);
-		if (cleanup == NULL)
-		    return 0;
-		VISIT(c, expr, 
-			(expr_ty)asdl_seq_GET(e->v.Compare.comparators, 0));
-	}
-	for (i = 1; i < n; i++) {
-		ADDOP(c, DUP_TOP);
-		ADDOP(c, ROT_THREE);
-		ADDOP_I(c, COMPARE_OP,
-			cmpop((cmpop_ty)(asdl_seq_GET(
-						  e->v.Compare.ops, i - 1))));
-		ADDOP_JREL(c, JUMP_IF_FALSE, cleanup);
-		NEXT_BLOCK(c);
-		ADDOP(c, POP_TOP);
-		if (i < (n - 1))
-		    VISIT(c, expr, 
-			    (expr_ty)asdl_seq_GET(e->v.Compare.comparators, i));
-	}
-	VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Compare.comparators, n - 1));
-	ADDOP_I(c, COMPARE_OP,
-	       cmpop((cmpop_ty)(asdl_seq_GET(e->v.Compare.ops, n - 1))));
-	if (n > 1) {
-		basicblock *end = compiler_new_block(c);
-		if (end == NULL)
-		    return 0;
-		ADDOP_JREL(c, JUMP_FORWARD, end);
-		compiler_use_next_block(c, cleanup);
-		ADDOP(c, ROT_TWO);
-		ADDOP(c, POP_TOP);
-		compiler_use_next_block(c, end);
-	}
-	return 1;
+    /* XXX the logic can be cleaned up for 1 or multiple comparisons */
+    VISIT(c, expr, e->v.Compare.left);
+    n = asdl_seq_LEN(e->v.Compare.ops);
+    assert(n > 0);
+    if (n > 1) {
+        cleanup = compiler_new_block(c);
+        if (cleanup == NULL)
+            return 0;
+        VISIT(c, expr,
+            (expr_ty)asdl_seq_GET(e->v.Compare.comparators, 0));
+    }
+    for (i = 1; i < n; i++) {
+        ADDOP(c, DUP_TOP);
+        ADDOP(c, ROT_THREE);
+        ADDOP_I(c, COMPARE_OP,
+            cmpop((cmpop_ty)(asdl_seq_GET(
+                                      e->v.Compare.ops, i - 1))));
+        ADDOP_JREL(c, JUMP_IF_FALSE, cleanup);
+        NEXT_BLOCK(c);
+        ADDOP(c, POP_TOP);
+        if (i < (n - 1))
+            VISIT(c, expr,
+                (expr_ty)asdl_seq_GET(e->v.Compare.comparators, i));
+    }
+    VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Compare.comparators, n - 1));
+    ADDOP_I(c, COMPARE_OP,
+           cmpop((cmpop_ty)(asdl_seq_GET(e->v.Compare.ops, n - 1))));
+    if (n > 1) {
+        basicblock *end = compiler_new_block(c);
+        if (end == NULL)
+            return 0;
+        ADDOP_JREL(c, JUMP_FORWARD, end);
+        compiler_use_next_block(c, cleanup);
+        ADDOP(c, ROT_TWO);
+        ADDOP(c, POP_TOP);
+        compiler_use_next_block(c, end);
+    }
+    return 1;
 }
 
 static int
 compiler_call(struct compiler *c, expr_ty e)
 {
-	int n, code = 0;
+    int n, code = 0;
 
-	VISIT(c, expr, e->v.Call.func);
-	n = asdl_seq_LEN(e->v.Call.args);
-	VISIT_SEQ(c, expr, e->v.Call.args);
-	if (e->v.Call.keywords) {
-		VISIT_SEQ(c, keyword, e->v.Call.keywords);
-		n |= asdl_seq_LEN(e->v.Call.keywords) << 8;
-	}
-	if (e->v.Call.starargs) {
-		VISIT(c, expr, e->v.Call.starargs);
-		code |= 1;
-	}
-	if (e->v.Call.kwargs) {
-		VISIT(c, expr, e->v.Call.kwargs);
-		code |= 2;
-	}
-	switch (code) {
-	case 0:
-		ADDOP_I(c, CALL_FUNCTION, n);
-		break;
-	case 1:
-		ADDOP_I(c, CALL_FUNCTION_VAR, n);
-		break;
-	case 2:
-		ADDOP_I(c, CALL_FUNCTION_KW, n);
-		break;
-	case 3:
-		ADDOP_I(c, CALL_FUNCTION_VAR_KW, n);
-		break;
-	}
-	return 1;
+    VISIT(c, expr, e->v.Call.func);
+    n = asdl_seq_LEN(e->v.Call.args);
+    VISIT_SEQ(c, expr, e->v.Call.args);
+    if (e->v.Call.keywords) {
+        VISIT_SEQ(c, keyword, e->v.Call.keywords);
+        n |= asdl_seq_LEN(e->v.Call.keywords) << 8;
+    }
+    if (e->v.Call.starargs) {
+        VISIT(c, expr, e->v.Call.starargs);
+        code |= 1;
+    }
+    if (e->v.Call.kwargs) {
+        VISIT(c, expr, e->v.Call.kwargs);
+        code |= 2;
+    }
+    switch (code) {
+    case 0:
+        ADDOP_I(c, CALL_FUNCTION, n);
+        break;
+    case 1:
+        ADDOP_I(c, CALL_FUNCTION_VAR, n);
+        break;
+    case 2:
+        ADDOP_I(c, CALL_FUNCTION_KW, n);
+        break;
+    case 3:
+        ADDOP_I(c, CALL_FUNCTION_VAR_KW, n);
+        break;
+    }
+    return 1;
 }
 
 static int
 compiler_listcomp_generator(struct compiler *c, PyObject *tmpname,
-			    asdl_seq *generators, int gen_index, 
-			    expr_ty elt)
+                            asdl_seq *generators, int gen_index,
+                            expr_ty elt)
 {
-	/* generate code for the iterator, then each of the ifs,
-	   and then write to the element */
+    /* generate code for the iterator, then each of the ifs,
+       and then write to the element */
 
-	comprehension_ty l;
-	basicblock *start, *anchor, *skip, *if_cleanup;
-	int i, n;
+    comprehension_ty l;
+    basicblock *start, *anchor, *skip, *if_cleanup;
+    int i, n;
 
-	start = compiler_new_block(c);
-	skip = compiler_new_block(c);
-	if_cleanup = compiler_new_block(c);
-	anchor = compiler_new_block(c);
+    start = compiler_new_block(c);
+    skip = compiler_new_block(c);
+    if_cleanup = compiler_new_block(c);
+    anchor = compiler_new_block(c);
 
-	if (start == NULL || skip == NULL || if_cleanup == NULL ||
-		anchor == NULL)
-	    return 0;
+    if (start == NULL || skip == NULL || if_cleanup == NULL ||
+        anchor == NULL)
+        return 0;
 
-	l = (comprehension_ty)asdl_seq_GET(generators, gen_index);
-	VISIT(c, expr, l->iter);
-	ADDOP(c, GET_ITER);
-	compiler_use_next_block(c, start);
-	ADDOP_JREL(c, FOR_ITER, anchor);
-	NEXT_BLOCK(c);
-	VISIT(c, expr, l->target);
+    l = (comprehension_ty)asdl_seq_GET(generators, gen_index);
+    VISIT(c, expr, l->iter);
+    ADDOP(c, GET_ITER);
+    compiler_use_next_block(c, start);
+    ADDOP_JREL(c, FOR_ITER, anchor);
+    NEXT_BLOCK(c);
+    VISIT(c, expr, l->target);
 
-	/* XXX this needs to be cleaned up...a lot! */
-	n = asdl_seq_LEN(l->ifs);
-	for (i = 0; i < n; i++) {
-		expr_ty e = (expr_ty)asdl_seq_GET(l->ifs, i);
-		VISIT(c, expr, e);
-		ADDOP_JREL(c, JUMP_IF_FALSE, if_cleanup);
-		NEXT_BLOCK(c);
-		ADDOP(c, POP_TOP);
-	} 
+    /* XXX this needs to be cleaned up...a lot! */
+    n = asdl_seq_LEN(l->ifs);
+    for (i = 0; i < n; i++) {
+        expr_ty e = (expr_ty)asdl_seq_GET(l->ifs, i);
+        VISIT(c, expr, e);
+        ADDOP_JREL(c, JUMP_IF_FALSE, if_cleanup);
+        NEXT_BLOCK(c);
+        ADDOP(c, POP_TOP);
+    }
 
-	if (++gen_index < asdl_seq_LEN(generators))
-	    if (!compiler_listcomp_generator(c, tmpname, 
-					     generators, gen_index, elt))
-		return 0;
+    if (++gen_index < asdl_seq_LEN(generators))
+        if (!compiler_listcomp_generator(c, tmpname,
+                                         generators, gen_index, elt))
+        return 0;
 
-	/* only append after the last for generator */
-	if (gen_index >= asdl_seq_LEN(generators)) {
-	    if (!compiler_nameop(c, tmpname, Load))
-		return 0;
-	    VISIT(c, expr, elt);
-	    ADDOP(c, LIST_APPEND);
+    /* only append after the last for generator */
+    if (gen_index >= asdl_seq_LEN(generators)) {
+        if (!compiler_nameop(c, tmpname, Load))
+        return 0;
+        VISIT(c, expr, elt);
+        ADDOP(c, LIST_APPEND);
 
-	    compiler_use_next_block(c, skip);
-	}
-	for (i = 0; i < n; i++) {
-		ADDOP_I(c, JUMP_FORWARD, 1);
-		if (i == 0)
-		    compiler_use_next_block(c, if_cleanup);
-		ADDOP(c, POP_TOP);
-	} 
-	ADDOP_JABS(c, JUMP_ABSOLUTE, start);
-	compiler_use_next_block(c, anchor);
-	/* delete the temporary list name added to locals */
-	if (gen_index == 1)
-	    if (!compiler_nameop(c, tmpname, Del))
-		return 0;
-	
-	return 1;
+        compiler_use_next_block(c, skip);
+    }
+    for (i = 0; i < n; i++) {
+        ADDOP_I(c, JUMP_FORWARD, 1);
+        if (i == 0)
+            compiler_use_next_block(c, if_cleanup);
+        ADDOP(c, POP_TOP);
+    }
+    ADDOP_JABS(c, JUMP_ABSOLUTE, start);
+    compiler_use_next_block(c, anchor);
+    /* delete the temporary list name added to locals */
+    if (gen_index == 1)
+        if (!compiler_nameop(c, tmpname, Del))
+        return 0;
+
+    return 1;
 }
 
 static int
 compiler_listcomp(struct compiler *c, expr_ty e)
 {
-	identifier tmp;
-	int rc = 0;
-	asdl_seq *generators = e->v.ListComp.generators;
+    identifier tmp;
+    int rc = 0;
+    asdl_seq *generators = e->v.ListComp.generators;
 
-	assert(e->kind == ListComp_kind);
-	tmp = compiler_new_tmpname(c);
-	if (!tmp)
-		return 0;
-	ADDOP_I(c, BUILD_LIST, 0);
-	ADDOP(c, DUP_TOP);
-	if (compiler_nameop(c, tmp, Store))
-	    rc = compiler_listcomp_generator(c, tmp, generators, 0, 
-					     e->v.ListComp.elt);
-	Py_DECREF(tmp);
-	return rc;
+    assert(e->kind == ListComp_kind);
+    tmp = compiler_new_tmpname(c);
+    if (!tmp)
+        return 0;
+    ADDOP_I(c, BUILD_LIST, 0);
+    ADDOP(c, DUP_TOP);
+    if (compiler_nameop(c, tmp, Store))
+        rc = compiler_listcomp_generator(c, tmp, generators, 0,
+                                         e->v.ListComp.elt);
+    Py_DECREF(tmp);
+    return rc;
 }
 
 static int
 compiler_genexp_generator(struct compiler *c,
-			  asdl_seq *generators, int gen_index, 
-			  expr_ty elt)
+                          asdl_seq *generators, int gen_index,
+                          expr_ty elt)
 {
-	/* generate code for the iterator, then each of the ifs,
-	   and then write to the element */
+    /* generate code for the iterator, then each of the ifs,
+       and then write to the element */
 
-	comprehension_ty ge;
-	basicblock *start, *anchor, *skip, *if_cleanup, *end;
-	int i, n;
+    comprehension_ty ge;
+    basicblock *start, *anchor, *skip, *if_cleanup, *end;
+    int i, n;
 
-	start = compiler_new_block(c);
-	skip = compiler_new_block(c);
-	if_cleanup = compiler_new_block(c);
-	anchor = compiler_new_block(c);
-	end = compiler_new_block(c);
+    start = compiler_new_block(c);
+    skip = compiler_new_block(c);
+    if_cleanup = compiler_new_block(c);
+    anchor = compiler_new_block(c);
+    end = compiler_new_block(c);
 
-	if (start == NULL || skip == NULL || if_cleanup == NULL ||
-	    anchor == NULL || end == NULL)
-		return 0;
+    if (start == NULL || skip == NULL || if_cleanup == NULL ||
+        anchor == NULL || end == NULL)
+        return 0;
 
-	ge = (comprehension_ty)asdl_seq_GET(generators, gen_index);
-	ADDOP_JREL(c, SETUP_LOOP, end);
-	if (!compiler_push_fblock(c, LOOP, start))
-		return 0;
+    ge = (comprehension_ty)asdl_seq_GET(generators, gen_index);
+    ADDOP_JREL(c, SETUP_LOOP, end);
+    if (!compiler_push_fblock(c, LOOP, start))
+        return 0;
 
-	if (gen_index == 0) {
-		/* Receive outermost iter as an implicit argument */
-		c->u->u_argcount = 1;
-		ADDOP_I(c, LOAD_FAST, 0);
-	}
-	else {
-		/* Sub-iter - calculate on the fly */
-		VISIT(c, expr, ge->iter);
-		ADDOP(c, GET_ITER);
-	}
-	compiler_use_next_block(c, start);
-	ADDOP_JREL(c, FOR_ITER, anchor);
-	NEXT_BLOCK(c);
-	VISIT(c, expr, ge->target);
+    if (gen_index == 0) {
+        /* Receive outermost iter as an implicit argument */
+        c->u->u_argcount = 1;
+        ADDOP_I(c, LOAD_FAST, 0);
+    }
+    else {
+        /* Sub-iter - calculate on the fly */
+        VISIT(c, expr, ge->iter);
+        ADDOP(c, GET_ITER);
+    }
+    compiler_use_next_block(c, start);
+    ADDOP_JREL(c, FOR_ITER, anchor);
+    NEXT_BLOCK(c);
+    VISIT(c, expr, ge->target);
 
-	/* XXX this needs to be cleaned up...a lot! */
-	n = asdl_seq_LEN(ge->ifs);
-	for (i = 0; i < n; i++) {
-		expr_ty e = (expr_ty)asdl_seq_GET(ge->ifs, i);
-		VISIT(c, expr, e);
-		ADDOP_JREL(c, JUMP_IF_FALSE, if_cleanup);
-		NEXT_BLOCK(c);
-		ADDOP(c, POP_TOP);
-	} 
+    /* XXX this needs to be cleaned up...a lot! */
+    n = asdl_seq_LEN(ge->ifs);
+    for (i = 0; i < n; i++) {
+        expr_ty e = (expr_ty)asdl_seq_GET(ge->ifs, i);
+        VISIT(c, expr, e);
+        ADDOP_JREL(c, JUMP_IF_FALSE, if_cleanup);
+        NEXT_BLOCK(c);
+        ADDOP(c, POP_TOP);
+    }
 
-	if (++gen_index < asdl_seq_LEN(generators))
-		if (!compiler_genexp_generator(c, generators, gen_index, elt))
-			return 0;
+    if (++gen_index < asdl_seq_LEN(generators))
+        if (!compiler_genexp_generator(c, generators, gen_index, elt))
+            return 0;
 
-	/* only append after the last 'for' generator */
-	if (gen_index >= asdl_seq_LEN(generators)) {
-		VISIT(c, expr, elt);
-		ADDOP(c, YIELD_VALUE);
-		ADDOP(c, POP_TOP);
+    /* only append after the last 'for' generator */
+    if (gen_index >= asdl_seq_LEN(generators)) {
+        VISIT(c, expr, elt);
+        ADDOP(c, YIELD_VALUE);
+        ADDOP(c, POP_TOP);
 
-		compiler_use_next_block(c, skip);
-	}
-	for (i = 0; i < n; i++) {
-		ADDOP_I(c, JUMP_FORWARD, 1);
-		if (i == 0)
-			compiler_use_next_block(c, if_cleanup);
+        compiler_use_next_block(c, skip);
+    }
+    for (i = 0; i < n; i++) {
+        ADDOP_I(c, JUMP_FORWARD, 1);
+        if (i == 0)
+            compiler_use_next_block(c, if_cleanup);
 
-		ADDOP(c, POP_TOP);
-	} 
-	ADDOP_JABS(c, JUMP_ABSOLUTE, start);
-	compiler_use_next_block(c, anchor);
-	ADDOP(c, POP_BLOCK);
-	compiler_pop_fblock(c, LOOP, start);
-	compiler_use_next_block(c, end);
+        ADDOP(c, POP_TOP);
+    }
+    ADDOP_JABS(c, JUMP_ABSOLUTE, start);
+    compiler_use_next_block(c, anchor);
+    ADDOP(c, POP_BLOCK);
+    compiler_pop_fblock(c, LOOP, start);
+    compiler_use_next_block(c, end);
 
-	return 1;
+    return 1;
 }
 
 static int
 compiler_genexp(struct compiler *c, expr_ty e)
 {
-	static identifier name;
-	PyCodeObject *co;
-	expr_ty outermost_iter = ((comprehension_ty)
-				 (asdl_seq_GET(e->v.GeneratorExp.generators,
-					       0)))->iter;
+    static identifier name;
+    PyCodeObject *co;
+    expr_ty outermost_iter = ((comprehension_ty)
+                             (asdl_seq_GET(e->v.GeneratorExp.generators,
+                                           0)))->iter;
 
-	if (!name) {
-		name = PyString_FromString("<genexpr>");
-		if (!name)
-			return 0;
-	}
+    if (!name) {
+        name = PyString_FromString("<genexpr>");
+        if (!name)
+            return 0;
+    }
 
-	if (!compiler_enter_scope(c, name, (void *)e, e->lineno))
-		return 0;
-	compiler_genexp_generator(c, e->v.GeneratorExp.generators, 0,
-				  e->v.GeneratorExp.elt);
-	co = assemble(c, 1);
-	compiler_exit_scope(c);
-	if (co == NULL)
-		return 0;
+    if (!compiler_enter_scope(c, name, (void *)e, e->lineno))
+        return 0;
+    compiler_genexp_generator(c, e->v.GeneratorExp.generators, 0,
+                              e->v.GeneratorExp.elt);
+    co = assemble(c, 1);
+    compiler_exit_scope(c);
+    if (co == NULL)
+        return 0;
 
-	compiler_make_closure(c, co, 0);
-	Py_DECREF(co);
+    compiler_make_closure(c, co, 0);
+    Py_DECREF(co);
 
-	VISIT(c, expr, outermost_iter);
-	ADDOP(c, GET_ITER);
-	ADDOP_I(c, CALL_FUNCTION, 1);
+    VISIT(c, expr, outermost_iter);
+    ADDOP(c, GET_ITER);
+    ADDOP_I(c, CALL_FUNCTION, 1);
 
-	return 1;
+    return 1;
 }
 
 static int
 compiler_visit_keyword(struct compiler *c, keyword_ty k)
 {
-	ADDOP_O(c, LOAD_CONST, k->arg, consts);
-	VISIT(c, expr, k->value);
-	return 1;
+    ADDOP_O(c, LOAD_CONST, k->arg, consts);
+    VISIT(c, expr, k->value);
+    return 1;
 }
 
-/* Test whether expression is constant.	 For constants, report
+/* Test whether expression is constant.  For constants, report
    whether they are true or false.
 
    Return values: 1 for true, 0 for false, -1 for non-constant.
@@ -2816,33 +2816,33 @@
 static int
 expr_constant(expr_ty e)
 {
-	switch (e->kind) {
-	case Num_kind:
-		return PyObject_IsTrue(e->v.Num.n);
-	case Str_kind:
-		return PyObject_IsTrue(e->v.Str.s);
-	case Name_kind:
-		/* __debug__ is not assignable, so we can optimize
-		 * it away in if and while statements */
-		if (strcmp(PyString_AS_STRING(e->v.Name.id),
-			   "__debug__") == 0)
-			   return ! Py_OptimizeFlag;
-		/* fall through */
-	default:
-		return -1;
-	}
+    switch (e->kind) {
+    case Num_kind:
+        return PyObject_IsTrue(e->v.Num.n);
+    case Str_kind:
+        return PyObject_IsTrue(e->v.Str.s);
+    case Name_kind:
+        /* __debug__ is not assignable, so we can optimize
+         * it away in if and while statements */
+        if (strcmp(PyString_AS_STRING(e->v.Name.id),
+                   "__debug__") == 0)
+                   return ! Py_OptimizeFlag;
+        /* fall through */
+    default:
+        return -1;
+    }
 }
 
 /*
    Implements the with statement from PEP 343.
 
-   The semantics outlined in that PEP are as follows:  
+   The semantics outlined in that PEP are as follows:
 
    with EXPR as VAR:
        BLOCK
-  
+
    It is implemented roughly as:
-  
+
    context = EXPR
    exit = context.__exit__  # not calling it
    value = context.__enter__()
@@ -2851,9 +2851,9 @@
        BLOCK
    finally:
        if an exception was raised:
-	   exc = copy of (exception, instance, traceback)
+       exc = copy of (exception, instance, traceback)
        else:
-	   exc = (None, None, None)
+       exc = (None, None, None)
        exit(*exc)
  */
 static int
@@ -2866,35 +2866,35 @@
     assert(s->kind == With_kind);
 
     if (!enter_attr) {
-	enter_attr = PyString_InternFromString("__enter__");
-	if (!enter_attr)
-	    return 0;
+    enter_attr = PyString_InternFromString("__enter__");
+    if (!enter_attr)
+        return 0;
     }
     if (!exit_attr) {
-	exit_attr = PyString_InternFromString("__exit__");
-	if (!exit_attr)
-	    return 0;
+    exit_attr = PyString_InternFromString("__exit__");
+    if (!exit_attr)
+        return 0;
     }
 
     block = compiler_new_block(c);
     finally = compiler_new_block(c);
     if (!block || !finally)
-	return 0;
+    return 0;
 
     if (s->v.With.optional_vars) {
-	/* Create a temporary variable to hold context.__enter__().
-	   We need to do this rather than preserving it on the stack
-	   because SETUP_FINALLY remembers the stack level.
-	   We need to do the assignment *inside* the try/finally
-	   so that context.__exit__() is called when the assignment
-	   fails.  But we need to call context.__enter__() *before*
-	   the try/finally so that if it fails we won't call
-	   context.__exit__().
-	*/
-	tmpvalue = compiler_new_tmpname(c);
-	if (tmpvalue == NULL)
-	    return 0;
-	PyArena_AddPyObject(c->c_arena, tmpvalue);
+    /* Create a temporary variable to hold context.__enter__().
+       We need to do this rather than preserving it on the stack
+       because SETUP_FINALLY remembers the stack level.
+       We need to do the assignment *inside* the try/finally
+       so that context.__exit__() is called when the assignment
+       fails.  But we need to call context.__enter__() *before*
+       the try/finally so that if it fails we won't call
+       context.__exit__().
+    */
+    tmpvalue = compiler_new_tmpname(c);
+    if (tmpvalue == NULL)
+        return 0;
+    PyArena_AddPyObject(c->c_arena, tmpvalue);
     }
 
     /* Evaluate EXPR */
@@ -2910,13 +2910,13 @@
     ADDOP_I(c, CALL_FUNCTION, 0);
 
     if (s->v.With.optional_vars) {
-	/* Store it in tmpvalue */
-	if (!compiler_nameop(c, tmpvalue, Store))
-	    return 0;
+    /* Store it in tmpvalue */
+    if (!compiler_nameop(c, tmpvalue, Store))
+        return 0;
     }
     else {
-	/* Discard result from context.__enter__() */
-	ADDOP(c, POP_TOP);
+    /* Discard result from context.__enter__() */
+    ADDOP(c, POP_TOP);
     }
 
     /* Start the try block */
@@ -2924,15 +2924,15 @@
 
     compiler_use_next_block(c, block);
     if (!compiler_push_fblock(c, FINALLY_TRY, block)) {
-	return 0;
+    return 0;
     }
 
     if (s->v.With.optional_vars) {
-	/* Bind saved result of context.__enter__() to VAR */
-	if (!compiler_nameop(c, tmpvalue, Load) ||
-	    !compiler_nameop(c, tmpvalue, Del))
-	  return 0;
-	VISIT(c, expr, s->v.With.optional_vars);
+    /* Bind saved result of context.__enter__() to VAR */
+    if (!compiler_nameop(c, tmpvalue, Load) ||
+        !compiler_nameop(c, tmpvalue, Del))
+      return 0;
+    VISIT(c, expr, s->v.With.optional_vars);
     }
 
     /* BLOCK code */
@@ -2945,7 +2945,7 @@
     ADDOP_O(c, LOAD_CONST, Py_None, consts);
     compiler_use_next_block(c, finally);
     if (!compiler_push_fblock(c, FINALLY_END, finally))
-	return 0;
+    return 0;
 
     /* Finally block starts; context.__exit__ is on the stack under
        the exception or return information. Just issue our magic
@@ -2961,217 +2961,217 @@
 static int
 compiler_visit_expr(struct compiler *c, expr_ty e)
 {
-	int i, n;
+    int i, n;
 
-	/* If expr e has a different line number than the last expr/stmt,
-	   set a new line number for the next instruction.
-	*/
-	if (e->lineno > c->u->u_lineno) {
-		c->u->u_lineno = e->lineno;
-		c->u->u_lineno_set = false;
-	}
-	switch (e->kind) {
-	case BoolOp_kind:
-		return compiler_boolop(c, e);
-	case BinOp_kind:
-		VISIT(c, expr, e->v.BinOp.left);
-		VISIT(c, expr, e->v.BinOp.right);
-		ADDOP(c, binop(c, e->v.BinOp.op));
-		break;
-	case UnaryOp_kind:
-		VISIT(c, expr, e->v.UnaryOp.operand);
-		ADDOP(c, unaryop(e->v.UnaryOp.op));
-		break;
-	case Lambda_kind:
-		return compiler_lambda(c, e);
-	case IfExp_kind:
-		return compiler_ifexp(c, e);
-	case Dict_kind:
-		n = asdl_seq_LEN(e->v.Dict.values);
-		ADDOP_I(c, BUILD_MAP, (n>0xFFFF ? 0xFFFF : n));
-		for (i = 0; i < n; i++) {
-			VISIT(c, expr, 
-				(expr_ty)asdl_seq_GET(e->v.Dict.values, i));
-			VISIT(c, expr, 
-				(expr_ty)asdl_seq_GET(e->v.Dict.keys, i));
-			ADDOP(c, STORE_MAP);
-		}
-		break;
-	case ListComp_kind:
-		return compiler_listcomp(c, e);
-	case GeneratorExp_kind:
-		return compiler_genexp(c, e);
-	case Yield_kind:
-		if (c->u->u_ste->ste_type != FunctionBlock)
-			return compiler_error(c, "'yield' outside function");
-		if (e->v.Yield.value) {
-			VISIT(c, expr, e->v.Yield.value);
-		}
-		else {
-			ADDOP_O(c, LOAD_CONST, Py_None, consts);
-		}
-		ADDOP(c, YIELD_VALUE);
-		break;
-	case Compare_kind:
-		return compiler_compare(c, e);
-	case Call_kind:
-		return compiler_call(c, e);
-	case Repr_kind:
-		VISIT(c, expr, e->v.Repr.value);
-		ADDOP(c, UNARY_CONVERT);
-		break;
-	case Num_kind:
-		ADDOP_O(c, LOAD_CONST, e->v.Num.n, consts);
-		break;
-	case Str_kind:
-		ADDOP_O(c, LOAD_CONST, e->v.Str.s, consts);
-		break;
-	/* The following exprs can be assignment targets. */
-	case Attribute_kind:
-		if (e->v.Attribute.ctx != AugStore)
-			VISIT(c, expr, e->v.Attribute.value);
-		switch (e->v.Attribute.ctx) {
-		case AugLoad:
-			ADDOP(c, DUP_TOP);
-			/* Fall through to load */
-		case Load:
-			ADDOP_NAME(c, LOAD_ATTR, e->v.Attribute.attr, names);
-			break;
-		case AugStore:
-			ADDOP(c, ROT_TWO);
-			/* Fall through to save */
-		case Store:
-			ADDOP_NAME(c, STORE_ATTR, e->v.Attribute.attr, names);
-			break;
-		case Del:
-			ADDOP_NAME(c, DELETE_ATTR, e->v.Attribute.attr, names);
-			break;
-		case Param:
-		default:
-			PyErr_SetString(PyExc_SystemError,
-					"param invalid in attribute expression");
-			return 0;
-		}
-		break;
-	case Subscript_kind:
-		switch (e->v.Subscript.ctx) {
-		case AugLoad:
-			VISIT(c, expr, e->v.Subscript.value);
-			VISIT_SLICE(c, e->v.Subscript.slice, AugLoad);
-			break;
-		case Load:
-			VISIT(c, expr, e->v.Subscript.value);
-			VISIT_SLICE(c, e->v.Subscript.slice, Load);
-			break;
-		case AugStore:
-			VISIT_SLICE(c, e->v.Subscript.slice, AugStore);
-			break;
-		case Store:
-			VISIT(c, expr, e->v.Subscript.value);
-			VISIT_SLICE(c, e->v.Subscript.slice, Store);
-			break;
-		case Del:
-			VISIT(c, expr, e->v.Subscript.value);
-			VISIT_SLICE(c, e->v.Subscript.slice, Del);
-			break;
-		case Param:
-		default:
-			PyErr_SetString(PyExc_SystemError,
-				"param invalid in subscript expression");
-			return 0;
-		}
-		break;
-	case Name_kind:
-		return compiler_nameop(c, e->v.Name.id, e->v.Name.ctx);
-	/* child nodes of List and Tuple will have expr_context set */
-	case List_kind:
-		return compiler_list(c, e);
-	case Tuple_kind:
-		return compiler_tuple(c, e);
-	}
-	return 1;
+    /* If expr e has a different line number than the last expr/stmt,
+       set a new line number for the next instruction.
+    */
+    if (e->lineno > c->u->u_lineno) {
+        c->u->u_lineno = e->lineno;
+        c->u->u_lineno_set = false;
+    }
+    switch (e->kind) {
+    case BoolOp_kind:
+        return compiler_boolop(c, e);
+    case BinOp_kind:
+        VISIT(c, expr, e->v.BinOp.left);
+        VISIT(c, expr, e->v.BinOp.right);
+        ADDOP(c, binop(c, e->v.BinOp.op));
+        break;
+    case UnaryOp_kind:
+        VISIT(c, expr, e->v.UnaryOp.operand);
+        ADDOP(c, unaryop(e->v.UnaryOp.op));
+        break;
+    case Lambda_kind:
+        return compiler_lambda(c, e);
+    case IfExp_kind:
+        return compiler_ifexp(c, e);
+    case Dict_kind:
+        n = asdl_seq_LEN(e->v.Dict.values);
+        ADDOP_I(c, BUILD_MAP, (n>0xFFFF ? 0xFFFF : n));
+        for (i = 0; i < n; i++) {
+            VISIT(c, expr,
+                (expr_ty)asdl_seq_GET(e->v.Dict.values, i));
+            VISIT(c, expr,
+                (expr_ty)asdl_seq_GET(e->v.Dict.keys, i));
+            ADDOP(c, STORE_MAP);
+        }
+        break;
+    case ListComp_kind:
+        return compiler_listcomp(c, e);
+    case GeneratorExp_kind:
+        return compiler_genexp(c, e);
+    case Yield_kind:
+        if (c->u->u_ste->ste_type != FunctionBlock)
+            return compiler_error(c, "'yield' outside function");
+        if (e->v.Yield.value) {
+            VISIT(c, expr, e->v.Yield.value);
+        }
+        else {
+            ADDOP_O(c, LOAD_CONST, Py_None, consts);
+        }
+        ADDOP(c, YIELD_VALUE);
+        break;
+    case Compare_kind:
+        return compiler_compare(c, e);
+    case Call_kind:
+        return compiler_call(c, e);
+    case Repr_kind:
+        VISIT(c, expr, e->v.Repr.value);
+        ADDOP(c, UNARY_CONVERT);
+        break;
+    case Num_kind:
+        ADDOP_O(c, LOAD_CONST, e->v.Num.n, consts);
+        break;
+    case Str_kind:
+        ADDOP_O(c, LOAD_CONST, e->v.Str.s, consts);
+        break;
+    /* The following exprs can be assignment targets. */
+    case Attribute_kind:
+        if (e->v.Attribute.ctx != AugStore)
+            VISIT(c, expr, e->v.Attribute.value);
+        switch (e->v.Attribute.ctx) {
+        case AugLoad:
+            ADDOP(c, DUP_TOP);
+            /* Fall through to load */
+        case Load:
+            ADDOP_NAME(c, LOAD_ATTR, e->v.Attribute.attr, names);
+            break;
+        case AugStore:
+            ADDOP(c, ROT_TWO);
+            /* Fall through to save */
+        case Store:
+            ADDOP_NAME(c, STORE_ATTR, e->v.Attribute.attr, names);
+            break;
+        case Del:
+            ADDOP_NAME(c, DELETE_ATTR, e->v.Attribute.attr, names);
+            break;
+        case Param:
+        default:
+            PyErr_SetString(PyExc_SystemError,
+                            "param invalid in attribute expression");
+            return 0;
+        }
+        break;
+    case Subscript_kind:
+        switch (e->v.Subscript.ctx) {
+        case AugLoad:
+            VISIT(c, expr, e->v.Subscript.value);
+            VISIT_SLICE(c, e->v.Subscript.slice, AugLoad);
+            break;
+        case Load:
+            VISIT(c, expr, e->v.Subscript.value);
+            VISIT_SLICE(c, e->v.Subscript.slice, Load);
+            break;
+        case AugStore:
+            VISIT_SLICE(c, e->v.Subscript.slice, AugStore);
+            break;
+        case Store:
+            VISIT(c, expr, e->v.Subscript.value);
+            VISIT_SLICE(c, e->v.Subscript.slice, Store);
+            break;
+        case Del:
+            VISIT(c, expr, e->v.Subscript.value);
+            VISIT_SLICE(c, e->v.Subscript.slice, Del);
+            break;
+        case Param:
+        default:
+            PyErr_SetString(PyExc_SystemError,
+                "param invalid in subscript expression");
+            return 0;
+        }
+        break;
+    case Name_kind:
+        return compiler_nameop(c, e->v.Name.id, e->v.Name.ctx);
+    /* child nodes of List and Tuple will have expr_context set */
+    case List_kind:
+        return compiler_list(c, e);
+    case Tuple_kind:
+        return compiler_tuple(c, e);
+    }
+    return 1;
 }
 
 static int
 compiler_augassign(struct compiler *c, stmt_ty s)
 {
-	expr_ty e = s->v.AugAssign.target;
-	expr_ty auge;
+    expr_ty e = s->v.AugAssign.target;
+    expr_ty auge;
 
-	assert(s->kind == AugAssign_kind);
+    assert(s->kind == AugAssign_kind);
 
-	switch (e->kind) {
-	case Attribute_kind:
-		auge = Attribute(e->v.Attribute.value, e->v.Attribute.attr,
-				 AugLoad, e->lineno, e->col_offset, c->c_arena);
-		if (auge == NULL)
-		    return 0;
-		VISIT(c, expr, auge);
-		VISIT(c, expr, s->v.AugAssign.value);
-		ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
-		auge->v.Attribute.ctx = AugStore;
-		VISIT(c, expr, auge);
-		break;
-	case Subscript_kind:
-		auge = Subscript(e->v.Subscript.value, e->v.Subscript.slice,
-				 AugLoad, e->lineno, e->col_offset, c->c_arena);
-		if (auge == NULL)
-		    return 0;
-		VISIT(c, expr, auge);
-		VISIT(c, expr, s->v.AugAssign.value);
-		ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
-		auge->v.Subscript.ctx = AugStore;
-		VISIT(c, expr, auge);
-		break;
-	case Name_kind:
-		if (!compiler_nameop(c, e->v.Name.id, Load))
-		    return 0;
-		VISIT(c, expr, s->v.AugAssign.value);
-		ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
-		return compiler_nameop(c, e->v.Name.id, Store);
-	default:
-		PyErr_Format(PyExc_SystemError, 
-			"invalid node type (%d) for augmented assignment",
-			e->kind);
-		return 0;
-	}
-	return 1;
+    switch (e->kind) {
+    case Attribute_kind:
+        auge = Attribute(e->v.Attribute.value, e->v.Attribute.attr,
+                         AugLoad, e->lineno, e->col_offset, c->c_arena);
+        if (auge == NULL)
+            return 0;
+        VISIT(c, expr, auge);
+        VISIT(c, expr, s->v.AugAssign.value);
+        ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
+        auge->v.Attribute.ctx = AugStore;
+        VISIT(c, expr, auge);
+        break;
+    case Subscript_kind:
+        auge = Subscript(e->v.Subscript.value, e->v.Subscript.slice,
+                         AugLoad, e->lineno, e->col_offset, c->c_arena);
+        if (auge == NULL)
+            return 0;
+        VISIT(c, expr, auge);
+        VISIT(c, expr, s->v.AugAssign.value);
+        ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
+        auge->v.Subscript.ctx = AugStore;
+        VISIT(c, expr, auge);
+        break;
+    case Name_kind:
+        if (!compiler_nameop(c, e->v.Name.id, Load))
+            return 0;
+        VISIT(c, expr, s->v.AugAssign.value);
+        ADDOP(c, inplace_binop(c, s->v.AugAssign.op));
+        return compiler_nameop(c, e->v.Name.id, Store);
+    default:
+        PyErr_Format(PyExc_SystemError,
+            "invalid node type (%d) for augmented assignment",
+            e->kind);
+        return 0;
+    }
+    return 1;
 }
 
 static int
 compiler_push_fblock(struct compiler *c, enum fblocktype t, basicblock *b)
 {
-	struct fblockinfo *f;
-	if (c->u->u_nfblocks >= CO_MAXBLOCKS) {
-		PyErr_SetString(PyExc_SystemError,
-				"too many statically nested blocks");
-		return 0;
-	}
-	f = &c->u->u_fblock[c->u->u_nfblocks++];
-	f->fb_type = t;
-	f->fb_block = b;
-	return 1;
+    struct fblockinfo *f;
+    if (c->u->u_nfblocks >= CO_MAXBLOCKS) {
+        PyErr_SetString(PyExc_SystemError,
+                        "too many statically nested blocks");
+        return 0;
+    }
+    f = &c->u->u_fblock[c->u->u_nfblocks++];
+    f->fb_type = t;
+    f->fb_block = b;
+    return 1;
 }
 
 static void
 compiler_pop_fblock(struct compiler *c, enum fblocktype t, basicblock *b)
 {
-	struct compiler_unit *u = c->u;
-	assert(u->u_nfblocks > 0);
-	u->u_nfblocks--;
-	assert(u->u_fblock[u->u_nfblocks].fb_type == t);
-	assert(u->u_fblock[u->u_nfblocks].fb_block == b);
+    struct compiler_unit *u = c->u;
+    assert(u->u_nfblocks > 0);
+    u->u_nfblocks--;
+    assert(u->u_fblock[u->u_nfblocks].fb_type == t);
+    assert(u->u_fblock[u->u_nfblocks].fb_block == b);
 }
 
 static int
 compiler_in_loop(struct compiler *c) {
-	int i;
-	struct compiler_unit *u = c->u;
-	for (i = 0; i < u->u_nfblocks; ++i) {
-		if (u->u_fblock[i].fb_type == LOOP)
-			return 1;
-	}
-	return 0;
+    int i;
+    struct compiler_unit *u = c->u;
+    for (i = 0; i < u->u_nfblocks; ++i) {
+        if (u->u_fblock[i].fb_type == LOOP)
+            return 1;
+    }
+    return 0;
 }
 /* Raises a SyntaxError and returns 0.
    If something goes wrong, a different exception may be raised.
@@ -3180,205 +3180,205 @@
 static int
 compiler_error(struct compiler *c, const char *errstr)
 {
-	PyObject *loc;
-	PyObject *u = NULL, *v = NULL;
+    PyObject *loc;
+    PyObject *u = NULL, *v = NULL;
 
-	loc = PyErr_ProgramText(c->c_filename, c->u->u_lineno);
-	if (!loc) {
-		Py_INCREF(Py_None);
-		loc = Py_None;
-	}
-	u = Py_BuildValue("(ziOO)", c->c_filename, c->u->u_lineno,
-			  Py_None, loc);
-	if (!u)
-		goto exit;
-	v = Py_BuildValue("(zO)", errstr, u);
-	if (!v)
-		goto exit;
-	PyErr_SetObject(PyExc_SyntaxError, v);
+    loc = PyErr_ProgramText(c->c_filename, c->u->u_lineno);
+    if (!loc) {
+        Py_INCREF(Py_None);
+        loc = Py_None;
+    }
+    u = Py_BuildValue("(ziOO)", c->c_filename, c->u->u_lineno,
+                      Py_None, loc);
+    if (!u)
+        goto exit;
+    v = Py_BuildValue("(zO)", errstr, u);
+    if (!v)
+        goto exit;
+    PyErr_SetObject(PyExc_SyntaxError, v);
  exit:
-	Py_DECREF(loc);
-	Py_XDECREF(u);
-	Py_XDECREF(v);
-	return 0;
+    Py_DECREF(loc);
+    Py_XDECREF(u);
+    Py_XDECREF(v);
+    return 0;
 }
 
 static int
-compiler_handle_subscr(struct compiler *c, const char *kind, 
-		       expr_context_ty ctx) 
+compiler_handle_subscr(struct compiler *c, const char *kind,
+                       expr_context_ty ctx)
 {
-	int op = 0;
+    int op = 0;
 
-	/* XXX this code is duplicated */
-	switch (ctx) {
-		case AugLoad: /* fall through to Load */
-		case Load:    op = BINARY_SUBSCR; break;
-		case AugStore:/* fall through to Store */
-		case Store:   op = STORE_SUBSCR; break;
-		case Del:     op = DELETE_SUBSCR; break;
-		case Param:
-			PyErr_Format(PyExc_SystemError, 
-				     "invalid %s kind %d in subscript\n", 
-				     kind, ctx);
-			return 0;
-	}
-	if (ctx == AugLoad) {
-		ADDOP_I(c, DUP_TOPX, 2);
-	}
-	else if (ctx == AugStore) {
-		ADDOP(c, ROT_THREE);
-	}
-	ADDOP(c, op);
-	return 1;
+    /* XXX this code is duplicated */
+    switch (ctx) {
+        case AugLoad: /* fall through to Load */
+        case Load:    op = BINARY_SUBSCR; break;
+        case AugStore:/* fall through to Store */
+        case Store:   op = STORE_SUBSCR; break;
+        case Del:     op = DELETE_SUBSCR; break;
+        case Param:
+            PyErr_Format(PyExc_SystemError,
+                         "invalid %s kind %d in subscript\n",
+                         kind, ctx);
+            return 0;
+    }
+    if (ctx == AugLoad) {
+        ADDOP_I(c, DUP_TOPX, 2);
+    }
+    else if (ctx == AugStore) {
+        ADDOP(c, ROT_THREE);
+    }
+    ADDOP(c, op);
+    return 1;
 }
 
 static int
 compiler_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
 {
-	int n = 2;
-	assert(s->kind == Slice_kind);
+    int n = 2;
+    assert(s->kind == Slice_kind);
 
-	/* only handles the cases where BUILD_SLICE is emitted */
-	if (s->v.Slice.lower) {
-		VISIT(c, expr, s->v.Slice.lower);
-	}
-	else {
-		ADDOP_O(c, LOAD_CONST, Py_None, consts);
-	}
-		
-	if (s->v.Slice.upper) {
-		VISIT(c, expr, s->v.Slice.upper);
-	}
-	else {
-		ADDOP_O(c, LOAD_CONST, Py_None, consts);
-	}
+    /* only handles the cases where BUILD_SLICE is emitted */
+    if (s->v.Slice.lower) {
+        VISIT(c, expr, s->v.Slice.lower);
+    }
+    else {
+        ADDOP_O(c, LOAD_CONST, Py_None, consts);
+    }
 
-	if (s->v.Slice.step) {
-		n++;
-		VISIT(c, expr, s->v.Slice.step);
-	}
-	ADDOP_I(c, BUILD_SLICE, n);
-	return 1;
+    if (s->v.Slice.upper) {
+        VISIT(c, expr, s->v.Slice.upper);
+    }
+    else {
+        ADDOP_O(c, LOAD_CONST, Py_None, consts);
+    }
+
+    if (s->v.Slice.step) {
+        n++;
+        VISIT(c, expr, s->v.Slice.step);
+    }
+    ADDOP_I(c, BUILD_SLICE, n);
+    return 1;
 }
 
 static int
 compiler_simple_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
 {
-	int op = 0, slice_offset = 0, stack_count = 0;
+    int op = 0, slice_offset = 0, stack_count = 0;
 
-	assert(s->v.Slice.step == NULL);
-	if (s->v.Slice.lower) {
-		slice_offset++;
-		stack_count++;
-		if (ctx != AugStore) 
-			VISIT(c, expr, s->v.Slice.lower);
-	}
-	if (s->v.Slice.upper) {
-		slice_offset += 2;
-		stack_count++;
-		if (ctx != AugStore) 
-			VISIT(c, expr, s->v.Slice.upper);
-	}
+    assert(s->v.Slice.step == NULL);
+    if (s->v.Slice.lower) {
+        slice_offset++;
+        stack_count++;
+        if (ctx != AugStore)
+            VISIT(c, expr, s->v.Slice.lower);
+    }
+    if (s->v.Slice.upper) {
+        slice_offset += 2;
+        stack_count++;
+        if (ctx != AugStore)
+            VISIT(c, expr, s->v.Slice.upper);
+    }
 
-	if (ctx == AugLoad) {
-		switch (stack_count) {
-		case 0: ADDOP(c, DUP_TOP); break;
-		case 1: ADDOP_I(c, DUP_TOPX, 2); break;
-		case 2: ADDOP_I(c, DUP_TOPX, 3); break;
-		}
-	}
-	else if (ctx == AugStore) {
-		switch (stack_count) {
-		case 0: ADDOP(c, ROT_TWO); break;
-		case 1: ADDOP(c, ROT_THREE); break;
-		case 2: ADDOP(c, ROT_FOUR); break;
-		}
-	}
+    if (ctx == AugLoad) {
+        switch (stack_count) {
+        case 0: ADDOP(c, DUP_TOP); break;
+        case 1: ADDOP_I(c, DUP_TOPX, 2); break;
+        case 2: ADDOP_I(c, DUP_TOPX, 3); break;
+        }
+    }
+    else if (ctx == AugStore) {
+        switch (stack_count) {
+        case 0: ADDOP(c, ROT_TWO); break;
+        case 1: ADDOP(c, ROT_THREE); break;
+        case 2: ADDOP(c, ROT_FOUR); break;
+        }
+    }
 
-	switch (ctx) {
-	case AugLoad: /* fall through to Load */
-	case Load: op = SLICE; break;
-	case AugStore:/* fall through to Store */
-	case Store: op = STORE_SLICE; break;
-	case Del: op = DELETE_SLICE; break;
-	case Param:
-	default:
-		PyErr_SetString(PyExc_SystemError,
-				"param invalid in simple slice");
-		return 0;
-	}
+    switch (ctx) {
+    case AugLoad: /* fall through to Load */
+    case Load: op = SLICE; break;
+    case AugStore:/* fall through to Store */
+    case Store: op = STORE_SLICE; break;
+    case Del: op = DELETE_SLICE; break;
+    case Param:
+    default:
+        PyErr_SetString(PyExc_SystemError,
+                        "param invalid in simple slice");
+        return 0;
+    }
 
-	ADDOP(c, op + slice_offset);
-	return 1;
+    ADDOP(c, op + slice_offset);
+    return 1;
 }
 
 static int
-compiler_visit_nested_slice(struct compiler *c, slice_ty s, 
-			    expr_context_ty ctx)
+compiler_visit_nested_slice(struct compiler *c, slice_ty s,
+                            expr_context_ty ctx)
 {
-	switch (s->kind) {
-	case Ellipsis_kind:
-		ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts);
-		break;
-	case Slice_kind:
-		return compiler_slice(c, s, ctx);
-	case Index_kind:
-		VISIT(c, expr, s->v.Index.value);
-		break;
-	case ExtSlice_kind:
-	default:
-		PyErr_SetString(PyExc_SystemError,
-				"extended slice invalid in nested slice");
-		return 0;
-	}
-	return 1;
+    switch (s->kind) {
+    case Ellipsis_kind:
+        ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts);
+        break;
+    case Slice_kind:
+        return compiler_slice(c, s, ctx);
+    case Index_kind:
+        VISIT(c, expr, s->v.Index.value);
+        break;
+    case ExtSlice_kind:
+    default:
+        PyErr_SetString(PyExc_SystemError,
+                        "extended slice invalid in nested slice");
+        return 0;
+    }
+    return 1;
 }
 
 static int
 compiler_visit_slice(struct compiler *c, slice_ty s, expr_context_ty ctx)
 {
-	char * kindname = NULL;
-	switch (s->kind) {
-	case Index_kind:
-		kindname = "index";
-		if (ctx != AugStore) {
-			VISIT(c, expr, s->v.Index.value);
-		}
-		break;
-	case Ellipsis_kind:
-		kindname = "ellipsis";
-		if (ctx != AugStore) {
-			ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts);
-		}
-		break;
-	case Slice_kind:
-		kindname = "slice";
-		if (!s->v.Slice.step) 
-			return compiler_simple_slice(c, s, ctx);
-		if (ctx != AugStore) {
-			if (!compiler_slice(c, s, ctx))
-				return 0;
-		}
-		break;
-	case ExtSlice_kind:
-		kindname = "extended slice";
-		if (ctx != AugStore) {
-			int i, n = asdl_seq_LEN(s->v.ExtSlice.dims);
-			for (i = 0; i < n; i++) {
-				slice_ty sub = (slice_ty)asdl_seq_GET(
-					s->v.ExtSlice.dims, i);
-				if (!compiler_visit_nested_slice(c, sub, ctx))
-					return 0;
-			}
-			ADDOP_I(c, BUILD_TUPLE, n);
-		}
-		break;
-	default:
-		PyErr_Format(PyExc_SystemError,
-			     "invalid subscript kind %d", s->kind);
-		return 0;
-	}
-	return compiler_handle_subscr(c, kindname, ctx);
+    char * kindname = NULL;
+    switch (s->kind) {
+    case Index_kind:
+        kindname = "index";
+        if (ctx != AugStore) {
+            VISIT(c, expr, s->v.Index.value);
+        }
+        break;
+    case Ellipsis_kind:
+        kindname = "ellipsis";
+        if (ctx != AugStore) {
+            ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts);
+        }
+        break;
+    case Slice_kind:
+        kindname = "slice";
+        if (!s->v.Slice.step)
+            return compiler_simple_slice(c, s, ctx);
+        if (ctx != AugStore) {
+            if (!compiler_slice(c, s, ctx))
+                return 0;
+        }
+        break;
+    case ExtSlice_kind:
+        kindname = "extended slice";
+        if (ctx != AugStore) {
+            int i, n = asdl_seq_LEN(s->v.ExtSlice.dims);
+            for (i = 0; i < n; i++) {
+                slice_ty sub = (slice_ty)asdl_seq_GET(
+                    s->v.ExtSlice.dims, i);
+                if (!compiler_visit_nested_slice(c, sub, ctx))
+                    return 0;
+            }
+            ADDOP_I(c, BUILD_TUPLE, n);
+        }
+        break;
+    default:
+        PyErr_Format(PyExc_SystemError,
+                     "invalid subscript kind %d", s->kind);
+        return 0;
+    }
+    return compiler_handle_subscr(c, kindname, ctx);
 }
 
 
@@ -3391,64 +3391,64 @@
 */
 
 struct assembler {
-	PyObject *a_bytecode;  /* string containing bytecode */
-	int a_offset;	       /* offset into bytecode */
-	int a_nblocks;	       /* number of reachable blocks */
-	basicblock **a_postorder; /* list of blocks in dfs postorder */
-	PyObject *a_lnotab;    /* string containing lnotab */
-	int a_lnotab_off;      /* offset into lnotab */
-	int a_lineno;	       /* last lineno of emitted instruction */
-	int a_lineno_off;      /* bytecode offset of last lineno */
+    PyObject *a_bytecode;  /* string containing bytecode */
+    int a_offset;              /* offset into bytecode */
+    int a_nblocks;             /* number of reachable blocks */
+    basicblock **a_postorder; /* list of blocks in dfs postorder */
+    PyObject *a_lnotab;    /* string containing lnotab */
+    int a_lnotab_off;      /* offset into lnotab */
+    int a_lineno;              /* last lineno of emitted instruction */
+    int a_lineno_off;      /* bytecode offset of last lineno */
 };
 
 static void
 dfs(struct compiler *c, basicblock *b, struct assembler *a)
 {
-	int i;
-	struct instr *instr = NULL;
+    int i;
+    struct instr *instr = NULL;
 
-	if (b->b_seen)
-		return;
-	b->b_seen = 1;
-	if (b->b_next != NULL)
-		dfs(c, b->b_next, a);
-	for (i = 0; i < b->b_iused; i++) {
-		instr = &b->b_instr[i];
-		if (instr->i_jrel || instr->i_jabs)
-			dfs(c, instr->i_target, a);
-	}
-	a->a_postorder[a->a_nblocks++] = b;
+    if (b->b_seen)
+        return;
+    b->b_seen = 1;
+    if (b->b_next != NULL)
+        dfs(c, b->b_next, a);
+    for (i = 0; i < b->b_iused; i++) {
+        instr = &b->b_instr[i];
+        if (instr->i_jrel || instr->i_jabs)
+            dfs(c, instr->i_target, a);
+    }
+    a->a_postorder[a->a_nblocks++] = b;
 }
 
 static int
 stackdepth_walk(struct compiler *c, basicblock *b, int depth, int maxdepth)
 {
-	int i;
-	struct instr *instr;
-	if (b->b_seen || b->b_startdepth >= depth)
-		return maxdepth;
-	b->b_seen = 1;
-	b->b_startdepth = depth;
-	for (i = 0; i < b->b_iused; i++) {
-		instr = &b->b_instr[i];
-		depth += opcode_stack_effect(instr->i_opcode, instr->i_oparg);
-		if (depth > maxdepth)
-			maxdepth = depth;
-		assert(depth >= 0); /* invalid code or bug in stackdepth() */
-		if (instr->i_jrel || instr->i_jabs) {
-			maxdepth = stackdepth_walk(c, instr->i_target,
-						   depth, maxdepth);
-			if (instr->i_opcode == JUMP_ABSOLUTE ||
-			    instr->i_opcode == JUMP_FORWARD) {
-				goto out; /* remaining code is dead */
-			}
-		}
-	}
-	if (b->b_next)
-		maxdepth = stackdepth_walk(c, b->b_next, depth, maxdepth);
+    int i;
+    struct instr *instr;
+    if (b->b_seen || b->b_startdepth >= depth)
+        return maxdepth;
+    b->b_seen = 1;
+    b->b_startdepth = depth;
+    for (i = 0; i < b->b_iused; i++) {
+        instr = &b->b_instr[i];
+        depth += opcode_stack_effect(instr->i_opcode, instr->i_oparg);
+        if (depth > maxdepth)
+            maxdepth = depth;
+        assert(depth >= 0); /* invalid code or bug in stackdepth() */
+        if (instr->i_jrel || instr->i_jabs) {
+            maxdepth = stackdepth_walk(c, instr->i_target,
+                                       depth, maxdepth);
+            if (instr->i_opcode == JUMP_ABSOLUTE ||
+                instr->i_opcode == JUMP_FORWARD) {
+                goto out; /* remaining code is dead */
+            }
+        }
+    }
+    if (b->b_next)
+        maxdepth = stackdepth_walk(c, b->b_next, depth, maxdepth);
 out:
-	b->b_seen = 0;
-	return maxdepth;
+    b->b_seen = 0;
+    return maxdepth;
 }
 
 /* Find the flow path that needs the largest stack.  We assume that
@@ -3457,49 +3457,49 @@
 static int
 stackdepth(struct compiler *c)
 {
-	basicblock *b, *entryblock;
-	entryblock = NULL;
-	for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
-		b->b_seen = 0;
-		b->b_startdepth = INT_MIN;
-		entryblock = b;
-	}
-	if (!entryblock)
-		return 0;
-	return stackdepth_walk(c, entryblock, 0, 0);
+    basicblock *b, *entryblock;
+    entryblock = NULL;
+    for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
+        b->b_seen = 0;
+        b->b_startdepth = INT_MIN;
+        entryblock = b;
+    }
+    if (!entryblock)
+        return 0;
+    return stackdepth_walk(c, entryblock, 0, 0);
 }
 
 static int
 assemble_init(struct assembler *a, int nblocks, int firstlineno)
 {
-	memset(a, 0, sizeof(struct assembler));
-	a->a_lineno = firstlineno;
-	a->a_bytecode = PyString_FromStringAndSize(NULL, DEFAULT_CODE_SIZE);
-	if (!a->a_bytecode)
-		return 0;
-	a->a_lnotab = PyString_FromStringAndSize(NULL, DEFAULT_LNOTAB_SIZE);
-	if (!a->a_lnotab)
-		return 0;
-	if (nblocks > PY_SIZE_MAX / sizeof(basicblock *)) {
-		PyErr_NoMemory();
-		return 0;
-	}
-	a->a_postorder = (basicblock **)PyObject_Malloc(
-					    sizeof(basicblock *) * nblocks);
-	if (!a->a_postorder) {
-		PyErr_NoMemory();
-		return 0;
-	}
-	return 1;
+    memset(a, 0, sizeof(struct assembler));
+    a->a_lineno = firstlineno;
+    a->a_bytecode = PyString_FromStringAndSize(NULL, DEFAULT_CODE_SIZE);
+    if (!a->a_bytecode)
+        return 0;
+    a->a_lnotab = PyString_FromStringAndSize(NULL, DEFAULT_LNOTAB_SIZE);
+    if (!a->a_lnotab)
+        return 0;
+    if (nblocks > PY_SIZE_MAX / sizeof(basicblock *)) {
+        PyErr_NoMemory();
+        return 0;
+    }
+    a->a_postorder = (basicblock **)PyObject_Malloc(
+                                        sizeof(basicblock *) * nblocks);
+    if (!a->a_postorder) {
+        PyErr_NoMemory();
+        return 0;
+    }
+    return 1;
 }
 
 static void
 assemble_free(struct assembler *a)
 {
-	Py_XDECREF(a->a_bytecode);
-	Py_XDECREF(a->a_lnotab);
-	if (a->a_postorder)
-		PyObject_Free(a->a_postorder);
+    Py_XDECREF(a->a_bytecode);
+    Py_XDECREF(a->a_lnotab);
+    if (a->a_postorder)
+        PyObject_Free(a->a_postorder);
 }
 
 /* Return the size of a basic block in bytes. */
@@ -3507,22 +3507,22 @@
 static int
 instrsize(struct instr *instr)
 {
-	if (!instr->i_hasarg)
-		return 1;	/* 1 byte for the opcode*/
-	if (instr->i_oparg > 0xffff)
-		return 6;	/* 1 (opcode) + 1 (EXTENDED_ARG opcode) + 2 (oparg) + 2(oparg extended) */
-	return 3; 		/* 1 (opcode) + 2 (oparg) */
+    if (!instr->i_hasarg)
+        return 1;               /* 1 byte for the opcode*/
+    if (instr->i_oparg > 0xffff)
+        return 6;               /* 1 (opcode) + 1 (EXTENDED_ARG opcode) + 2 (oparg) + 2(oparg extended) */
+    return 3;                   /* 1 (opcode) + 2 (oparg) */
 }
 
 static int
 blocksize(basicblock *b)
 {
-	int i;
-	int size = 0;
+    int i;
+    int size = 0;
 
-	for (i = 0; i < b->b_iused; i++)
-		size += instrsize(&b->b_instr[i]);
-	return size;
+    for (i = 0; i < b->b_iused; i++)
+        size += instrsize(&b->b_instr[i]);
+    return size;
 }
 
 /* All about a_lnotab.
@@ -3533,14 +3533,14 @@
 
 The array is conceptually a list of
     (bytecode offset increment, line number increment)
-pairs.	The details are important and delicate, best illustrated by example:
+pairs.  The details are important and delicate, best illustrated by example:
 
-    byte code offset	source code line number
-	0		    1
-	6		    2
-       50		    7
-      350		  307
-      361		  308
+    byte code offset    source code line number
+    0                       1
+    6                       2
+       50                   7
+      350                 307
+      361                 308
 
 The first trick is that these numbers aren't stored, only the increments
 from one row to the next (this doesn't really work, but it's a start):
@@ -3552,116 +3552,116 @@
 offsets and their corresponding line #s both increase monotonically, and (b)
 if at least one column jumps by more than 255 from one row to the next, more
 than one pair is written to the table. In case #b, there's no way to know
-from looking at the table later how many were written.	That's the delicate
+from looking at the table later how many were written.  That's the delicate
 part.  A user of c_lnotab desiring to find the source line number
 corresponding to a bytecode address A should do something like this
 
     lineno = addr = 0
     for addr_incr, line_incr in c_lnotab:
-	addr += addr_incr
-	if addr > A:
-	    return lineno
-	lineno += line_incr
+    addr += addr_incr
+    if addr > A:
+        return lineno
+    lineno += line_incr
 
 In order for this to work, when the addr field increments by more than 255,
 the line # increment in each pair generated must be 0 until the remaining addr
 increment is < 256.  So, in the example above, assemble_lnotab (it used
 to be called com_set_lineno) should not (as was actually done until 2.2)
-expand 300, 300 to 255, 255, 45, 45, 
-	    but to 255,	  0, 45, 255, 0, 45.
+expand 300, 300 to 255, 255, 45, 45,
+            but to 255,   0, 45, 255, 0, 45.
 */
 
 static int
 assemble_lnotab(struct assembler *a, struct instr *i)
 {
-	int d_bytecode, d_lineno;
-	int len;
-	unsigned char *lnotab;
+    int d_bytecode, d_lineno;
+    int len;
+    unsigned char *lnotab;
 
-	d_bytecode = a->a_offset - a->a_lineno_off;
-	d_lineno = i->i_lineno - a->a_lineno;
+    d_bytecode = a->a_offset - a->a_lineno_off;
+    d_lineno = i->i_lineno - a->a_lineno;
 
-	assert(d_bytecode >= 0);
-	assert(d_lineno >= 0);
+    assert(d_bytecode >= 0);
+    assert(d_lineno >= 0);
 
-	if(d_bytecode == 0 && d_lineno == 0)
-		return 1;
+    if(d_bytecode == 0 && d_lineno == 0)
+        return 1;
 
-	if (d_bytecode > 255) {
-		int j, nbytes, ncodes = d_bytecode / 255;
-		nbytes = a->a_lnotab_off + 2 * ncodes;
-		len = PyString_GET_SIZE(a->a_lnotab);
-		if (nbytes >= len) {
-			if ((len <= INT_MAX / 2) && (len * 2 < nbytes))
-				len = nbytes;
-			else if (len <= INT_MAX / 2)
-				len *= 2;
-			else {
-				PyErr_NoMemory();
-				return 0;
-			}
-			if (_PyString_Resize(&a->a_lnotab, len) < 0)
-				return 0;
-		}
-		lnotab = (unsigned char *)
-			   PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
-		for (j = 0; j < ncodes; j++) {
-			*lnotab++ = 255;
-			*lnotab++ = 0;
-		}
-		d_bytecode -= ncodes * 255;
-		a->a_lnotab_off += ncodes * 2;
-	}
-	assert(d_bytecode <= 255);
-	if (d_lineno > 255) {
-		int j, nbytes, ncodes = d_lineno / 255;
-		nbytes = a->a_lnotab_off + 2 * ncodes;
-		len = PyString_GET_SIZE(a->a_lnotab);
-		if (nbytes >= len) {
-			if ((len <= INT_MAX / 2) && len * 2 < nbytes)
-				len = nbytes;
-			else if (len <= INT_MAX / 2)
-				len *= 2;
-			else {
-				PyErr_NoMemory();
-				return 0;
-			}
-			if (_PyString_Resize(&a->a_lnotab, len) < 0)
-				return 0;
-		}
-		lnotab = (unsigned char *)
-			   PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
-		*lnotab++ = d_bytecode;
-		*lnotab++ = 255;
-		d_bytecode = 0;
-		for (j = 1; j < ncodes; j++) {
-			*lnotab++ = 0;
-			*lnotab++ = 255;
-		}
-		d_lineno -= ncodes * 255;
-		a->a_lnotab_off += ncodes * 2;
-	}
+    if (d_bytecode > 255) {
+        int j, nbytes, ncodes = d_bytecode / 255;
+        nbytes = a->a_lnotab_off + 2 * ncodes;
+        len = PyString_GET_SIZE(a->a_lnotab);
+        if (nbytes >= len) {
+            if ((len <= INT_MAX / 2) && (len * 2 < nbytes))
+                len = nbytes;
+            else if (len <= INT_MAX / 2)
+                len *= 2;
+            else {
+                PyErr_NoMemory();
+                return 0;
+            }
+            if (_PyString_Resize(&a->a_lnotab, len) < 0)
+                return 0;
+        }
+        lnotab = (unsigned char *)
+                   PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
+        for (j = 0; j < ncodes; j++) {
+            *lnotab++ = 255;
+            *lnotab++ = 0;
+        }
+        d_bytecode -= ncodes * 255;
+        a->a_lnotab_off += ncodes * 2;
+    }
+    assert(d_bytecode <= 255);
+    if (d_lineno > 255) {
+        int j, nbytes, ncodes = d_lineno / 255;
+        nbytes = a->a_lnotab_off + 2 * ncodes;
+        len = PyString_GET_SIZE(a->a_lnotab);
+        if (nbytes >= len) {
+            if ((len <= INT_MAX / 2) && len * 2 < nbytes)
+                len = nbytes;
+            else if (len <= INT_MAX / 2)
+                len *= 2;
+            else {
+                PyErr_NoMemory();
+                return 0;
+            }
+            if (_PyString_Resize(&a->a_lnotab, len) < 0)
+                return 0;
+        }
+        lnotab = (unsigned char *)
+                   PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
+        *lnotab++ = d_bytecode;
+        *lnotab++ = 255;
+        d_bytecode = 0;
+        for (j = 1; j < ncodes; j++) {
+            *lnotab++ = 0;
+            *lnotab++ = 255;
+        }
+        d_lineno -= ncodes * 255;
+        a->a_lnotab_off += ncodes * 2;
+    }
 
-	len = PyString_GET_SIZE(a->a_lnotab);
-	if (a->a_lnotab_off + 2 >= len) {
-		if (_PyString_Resize(&a->a_lnotab, len * 2) < 0)
-			return 0;
-	}
-	lnotab = (unsigned char *)
-			PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
+    len = PyString_GET_SIZE(a->a_lnotab);
+    if (a->a_lnotab_off + 2 >= len) {
+        if (_PyString_Resize(&a->a_lnotab, len * 2) < 0)
+            return 0;
+    }
+    lnotab = (unsigned char *)
+                    PyString_AS_STRING(a->a_lnotab) + a->a_lnotab_off;
 
-	a->a_lnotab_off += 2;
-	if (d_bytecode) {
-		*lnotab++ = d_bytecode;
-		*lnotab++ = d_lineno;
-	}
-	else {	/* First line of a block; def stmt, etc. */
-		*lnotab++ = 0;
-		*lnotab++ = d_lineno;
-	}
-	a->a_lineno = i->i_lineno;
-	a->a_lineno_off = a->a_offset;
-	return 1;
+    a->a_lnotab_off += 2;
+    if (d_bytecode) {
+        *lnotab++ = d_bytecode;
+        *lnotab++ = d_lineno;
+    }
+    else {      /* First line of a block; def stmt, etc. */
+        *lnotab++ = 0;
+        *lnotab++ = d_lineno;
+    }
+    a->a_lineno = i->i_lineno;
+    a->a_lineno_off = a->a_offset;
+    return 1;
 }
 
 /* assemble_emit()
@@ -3672,231 +3672,231 @@
 static int
 assemble_emit(struct assembler *a, struct instr *i)
 {
-	int size, arg = 0, ext = 0;
-	Py_ssize_t len = PyString_GET_SIZE(a->a_bytecode);
-	char *code;
+    int size, arg = 0, ext = 0;
+    Py_ssize_t len = PyString_GET_SIZE(a->a_bytecode);
+    char *code;
 
-	size = instrsize(i);
-	if (i->i_hasarg) {
-		arg = i->i_oparg;
-		ext = arg >> 16;
-	}
-	if (i->i_lineno && !assemble_lnotab(a, i))
-		return 0;
-	if (a->a_offset + size >= len) {
-		if (len > PY_SSIZE_T_MAX / 2)
-			return 0;
-		if (_PyString_Resize(&a->a_bytecode, len * 2) < 0)
-		    return 0;
-	}
-	code = PyString_AS_STRING(a->a_bytecode) + a->a_offset;
-	a->a_offset += size;
-	if (size == 6) {
-		assert(i->i_hasarg);
-		*code++ = (char)EXTENDED_ARG;
-		*code++ = ext & 0xff;
-		*code++ = ext >> 8;
-		arg &= 0xffff;
-	}
-	*code++ = i->i_opcode;
-	if (i->i_hasarg) {
-		assert(size == 3 || size == 6);
-		*code++ = arg & 0xff;
-		*code++ = arg >> 8;
-	}
-	return 1;
+    size = instrsize(i);
+    if (i->i_hasarg) {
+        arg = i->i_oparg;
+        ext = arg >> 16;
+    }
+    if (i->i_lineno && !assemble_lnotab(a, i))
+        return 0;
+    if (a->a_offset + size >= len) {
+        if (len > PY_SSIZE_T_MAX / 2)
+            return 0;
+        if (_PyString_Resize(&a->a_bytecode, len * 2) < 0)
+            return 0;
+    }
+    code = PyString_AS_STRING(a->a_bytecode) + a->a_offset;
+    a->a_offset += size;
+    if (size == 6) {
+        assert(i->i_hasarg);
+        *code++ = (char)EXTENDED_ARG;
+        *code++ = ext & 0xff;
+        *code++ = ext >> 8;
+        arg &= 0xffff;
+    }
+    *code++ = i->i_opcode;
+    if (i->i_hasarg) {
+        assert(size == 3 || size == 6);
+        *code++ = arg & 0xff;
+        *code++ = arg >> 8;
+    }
+    return 1;
 }
 
 static void
 assemble_jump_offsets(struct assembler *a, struct compiler *c)
 {
-	basicblock *b;
-	int bsize, totsize, extended_arg_count, last_extended_arg_count = 0;
-	int i;
+    basicblock *b;
+    int bsize, totsize, extended_arg_count, last_extended_arg_count = 0;
+    int i;
 
-	/* Compute the size of each block and fixup jump args.
-	   Replace block pointer with position in bytecode. */
+    /* Compute the size of each block and fixup jump args.
+       Replace block pointer with position in bytecode. */
 start:
-	totsize = 0;
-	for (i = a->a_nblocks - 1; i >= 0; i--) {
-		b = a->a_postorder[i];
-		bsize = blocksize(b);
-		b->b_offset = totsize;
-		totsize += bsize;
-	}
-	extended_arg_count = 0;
-	for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
-		bsize = b->b_offset;
-		for (i = 0; i < b->b_iused; i++) {
-			struct instr *instr = &b->b_instr[i];
-			/* Relative jumps are computed relative to
-			   the instruction pointer after fetching
-			   the jump instruction.
-			*/
-			bsize += instrsize(instr);
-			if (instr->i_jabs)
-				instr->i_oparg = instr->i_target->b_offset;
-			else if (instr->i_jrel) {
-				int delta = instr->i_target->b_offset - bsize;
-				instr->i_oparg = delta;
-			}
-			else
-				continue;
-			if (instr->i_oparg > 0xffff)
-				extended_arg_count++;
-		}
-	}
+    totsize = 0;
+    for (i = a->a_nblocks - 1; i >= 0; i--) {
+        b = a->a_postorder[i];
+        bsize = blocksize(b);
+        b->b_offset = totsize;
+        totsize += bsize;
+    }
+    extended_arg_count = 0;
+    for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
+        bsize = b->b_offset;
+        for (i = 0; i < b->b_iused; i++) {
+            struct instr *instr = &b->b_instr[i];
+            /* Relative jumps are computed relative to
+               the instruction pointer after fetching
+               the jump instruction.
+            */
+            bsize += instrsize(instr);
+            if (instr->i_jabs)
+                instr->i_oparg = instr->i_target->b_offset;
+            else if (instr->i_jrel) {
+                int delta = instr->i_target->b_offset - bsize;
+                instr->i_oparg = delta;
+            }
+            else
+                continue;
+            if (instr->i_oparg > 0xffff)
+                extended_arg_count++;
+        }
+    }
 
-	/* XXX: This is an awful hack that could hurt performance, but
-		on the bright side it should work until we come up
-		with a better solution.
+    /* XXX: This is an awful hack that could hurt performance, but
+        on the bright side it should work until we come up
+        with a better solution.
 
-		In the meantime, should the goto be dropped in favor
-		of a loop?
+        In the meantime, should the goto be dropped in favor
+        of a loop?
 
-		The issue is that in the first loop blocksize() is called
-		which calls instrsize() which requires i_oparg be set
-		appropriately.	There is a bootstrap problem because
-		i_oparg is calculated in the second loop above.
+        The issue is that in the first loop blocksize() is called
+        which calls instrsize() which requires i_oparg be set
+        appropriately.          There is a bootstrap problem because
+        i_oparg is calculated in the second loop above.
 
-		So we loop until we stop seeing new EXTENDED_ARGs.
-		The only EXTENDED_ARGs that could be popping up are
-		ones in jump instructions.  So this should converge
-		fairly quickly.
-	*/
-	if (last_extended_arg_count != extended_arg_count) {
-		last_extended_arg_count = extended_arg_count;
-		goto start;
-	}
+        So we loop until we stop seeing new EXTENDED_ARGs.
+        The only EXTENDED_ARGs that could be popping up are
+        ones in jump instructions.  So this should converge
+        fairly quickly.
+    */
+    if (last_extended_arg_count != extended_arg_count) {
+        last_extended_arg_count = extended_arg_count;
+        goto start;
+    }
 }
 
 static PyObject *
 dict_keys_inorder(PyObject *dict, int offset)
 {
-	PyObject *tuple, *k, *v;
-	Py_ssize_t i, pos = 0, size = PyDict_Size(dict);
+    PyObject *tuple, *k, *v;
+    Py_ssize_t i, pos = 0, size = PyDict_Size(dict);
 
-	tuple = PyTuple_New(size);
-	if (tuple == NULL)
-		return NULL;
-	while (PyDict_Next(dict, &pos, &k, &v)) {
-		i = PyInt_AS_LONG(v);
-		k = PyTuple_GET_ITEM(k, 0);
-		Py_INCREF(k);
-		assert((i - offset) < size);
-		assert((i - offset) >= 0);
-		PyTuple_SET_ITEM(tuple, i - offset, k);
-	}
-	return tuple;
+    tuple = PyTuple_New(size);
+    if (tuple == NULL)
+        return NULL;
+    while (PyDict_Next(dict, &pos, &k, &v)) {
+        i = PyInt_AS_LONG(v);
+        k = PyTuple_GET_ITEM(k, 0);
+        Py_INCREF(k);
+        assert((i - offset) < size);
+        assert((i - offset) >= 0);
+        PyTuple_SET_ITEM(tuple, i - offset, k);
+    }
+    return tuple;
 }
 
 static int
 compute_code_flags(struct compiler *c)
 {
-	PySTEntryObject *ste = c->u->u_ste;
-	int flags = 0, n;
-	if (ste->ste_type != ModuleBlock)
-		flags |= CO_NEWLOCALS;
-	if (ste->ste_type == FunctionBlock) {
-		if (!ste->ste_unoptimized)
-			flags |= CO_OPTIMIZED;
-		if (ste->ste_nested)
-			flags |= CO_NESTED;
-		if (ste->ste_generator)
-			flags |= CO_GENERATOR;
-	}
-	if (ste->ste_varargs)
-		flags |= CO_VARARGS;
-	if (ste->ste_varkeywords)
-		flags |= CO_VARKEYWORDS;
-	if (ste->ste_generator)
-		flags |= CO_GENERATOR;
+    PySTEntryObject *ste = c->u->u_ste;
+    int flags = 0, n;
+    if (ste->ste_type != ModuleBlock)
+        flags |= CO_NEWLOCALS;
+    if (ste->ste_type == FunctionBlock) {
+        if (!ste->ste_unoptimized)
+            flags |= CO_OPTIMIZED;
+        if (ste->ste_nested)
+            flags |= CO_NESTED;
+        if (ste->ste_generator)
+            flags |= CO_GENERATOR;
+    }
+    if (ste->ste_varargs)
+        flags |= CO_VARARGS;
+    if (ste->ste_varkeywords)
+        flags |= CO_VARKEYWORDS;
+    if (ste->ste_generator)
+        flags |= CO_GENERATOR;
 
-	/* (Only) inherit compilerflags in PyCF_MASK */
-	flags |= (c->c_flags->cf_flags & PyCF_MASK);
+    /* (Only) inherit compilerflags in PyCF_MASK */
+    flags |= (c->c_flags->cf_flags & PyCF_MASK);
 
-	n = PyDict_Size(c->u->u_freevars);
-	if (n < 0)
-	    return -1;
-	if (n == 0) {
-	    n = PyDict_Size(c->u->u_cellvars);
-	    if (n < 0)
-		return -1;
-	    if (n == 0) {
-		flags |= CO_NOFREE;
-	    }
-	}
+    n = PyDict_Size(c->u->u_freevars);
+    if (n < 0)
+        return -1;
+    if (n == 0) {
+        n = PyDict_Size(c->u->u_cellvars);
+        if (n < 0)
+        return -1;
+        if (n == 0) {
+        flags |= CO_NOFREE;
+        }
+    }
 
-	return flags;
+    return flags;
 }
 
 static PyCodeObject *
 makecode(struct compiler *c, struct assembler *a)
 {
-	PyObject *tmp;
-	PyCodeObject *co = NULL;
-	PyObject *consts = NULL;
-	PyObject *names = NULL;
-	PyObject *varnames = NULL;
-	PyObject *filename = NULL;
-	PyObject *name = NULL;
-	PyObject *freevars = NULL;
-	PyObject *cellvars = NULL;
-	PyObject *bytecode = NULL;
-	int nlocals, flags;
+    PyObject *tmp;
+    PyCodeObject *co = NULL;
+    PyObject *consts = NULL;
+    PyObject *names = NULL;
+    PyObject *varnames = NULL;
+    PyObject *filename = NULL;
+    PyObject *name = NULL;
+    PyObject *freevars = NULL;
+    PyObject *cellvars = NULL;
+    PyObject *bytecode = NULL;
+    int nlocals, flags;
 
-	tmp = dict_keys_inorder(c->u->u_consts, 0);
-	if (!tmp)
-		goto error;
-	consts = PySequence_List(tmp); /* optimize_code requires a list */
-	Py_DECREF(tmp);
+    tmp = dict_keys_inorder(c->u->u_consts, 0);
+    if (!tmp)
+        goto error;
+    consts = PySequence_List(tmp); /* optimize_code requires a list */
+    Py_DECREF(tmp);
 
-	names = dict_keys_inorder(c->u->u_names, 0);
-	varnames = dict_keys_inorder(c->u->u_varnames, 0);
-	if (!consts || !names || !varnames)
-		goto error;
-      
-	cellvars = dict_keys_inorder(c->u->u_cellvars, 0);
-	if (!cellvars)
-	    goto error;
-	freevars = dict_keys_inorder(c->u->u_freevars, PyTuple_Size(cellvars));
-	if (!freevars)
-	    goto error;
-	filename = PyString_FromString(c->c_filename);
-	if (!filename)
-		goto error;
+    names = dict_keys_inorder(c->u->u_names, 0);
+    varnames = dict_keys_inorder(c->u->u_varnames, 0);
+    if (!consts || !names || !varnames)
+        goto error;
 
-	nlocals = PyDict_Size(c->u->u_varnames);
-	flags = compute_code_flags(c);
-	if (flags < 0)
-		goto error;
+    cellvars = dict_keys_inorder(c->u->u_cellvars, 0);
+    if (!cellvars)
+        goto error;
+    freevars = dict_keys_inorder(c->u->u_freevars, PyTuple_Size(cellvars));
+    if (!freevars)
+        goto error;
+    filename = PyString_FromString(c->c_filename);
+    if (!filename)
+        goto error;
 
-	bytecode = PyCode_Optimize(a->a_bytecode, consts, names, a->a_lnotab);
-	if (!bytecode)
-		goto error;
+    nlocals = PyDict_Size(c->u->u_varnames);
+    flags = compute_code_flags(c);
+    if (flags < 0)
+        goto error;
 
-	tmp = PyList_AsTuple(consts); /* PyCode_New requires a tuple */
-	if (!tmp)
-		goto error;
-	Py_DECREF(consts);
-	consts = tmp;
+    bytecode = PyCode_Optimize(a->a_bytecode, consts, names, a->a_lnotab);
+    if (!bytecode)
+        goto error;
 
-	co = PyCode_New(c->u->u_argcount, nlocals, stackdepth(c), flags,
-			bytecode, consts, names, varnames,
-			freevars, cellvars,
-			filename, c->u->u_name,
-			c->u->u_firstlineno,
-			a->a_lnotab);
+    tmp = PyList_AsTuple(consts); /* PyCode_New requires a tuple */
+    if (!tmp)
+        goto error;
+    Py_DECREF(consts);
+    consts = tmp;
+
+    co = PyCode_New(c->u->u_argcount, nlocals, stackdepth(c), flags,
+                    bytecode, consts, names, varnames,
+                    freevars, cellvars,
+                    filename, c->u->u_name,
+                    c->u->u_firstlineno,
+                    a->a_lnotab);
  error:
-	Py_XDECREF(consts);
-	Py_XDECREF(names);
-	Py_XDECREF(varnames);
-	Py_XDECREF(filename);
-	Py_XDECREF(name);
-	Py_XDECREF(freevars);
-	Py_XDECREF(cellvars);
-	Py_XDECREF(bytecode);
-	return co;
+    Py_XDECREF(consts);
+    Py_XDECREF(names);
+    Py_XDECREF(varnames);
+    Py_XDECREF(filename);
+    Py_XDECREF(name);
+    Py_XDECREF(freevars);
+    Py_XDECREF(cellvars);
+    Py_XDECREF(bytecode);
+    return co;
 }
 
 
@@ -3905,90 +3905,90 @@
 static void
 dump_instr(const struct instr *i)
 {
-	const char *jrel = i->i_jrel ? "jrel " : "";
-	const char *jabs = i->i_jabs ? "jabs " : "";
-	char arg[128];
+    const char *jrel = i->i_jrel ? "jrel " : "";
+    const char *jabs = i->i_jabs ? "jabs " : "";
+    char arg[128];
 
-	*arg = '\0';
-	if (i->i_hasarg)
-		sprintf(arg, "arg: %d ", i->i_oparg);
+    *arg = '\0';
+    if (i->i_hasarg)
+        sprintf(arg, "arg: %d ", i->i_oparg);
 
-	fprintf(stderr, "line: %d, opcode: %d %s%s%s\n", 
-			i->i_lineno, i->i_opcode, arg, jabs, jrel);
+    fprintf(stderr, "line: %d, opcode: %d %s%s%s\n",
+                    i->i_lineno, i->i_opcode, arg, jabs, jrel);
 }
 
 static void
 dump_basicblock(const basicblock *b)
 {
-	const char *seen = b->b_seen ? "seen " : "";
-	const char *b_return = b->b_return ? "return " : "";
-	fprintf(stderr, "used: %d, depth: %d, offset: %d %s%s\n",
-		b->b_iused, b->b_startdepth, b->b_offset, seen, b_return);
-	if (b->b_instr) {
-		int i;
-		for (i = 0; i < b->b_iused; i++) {
-			fprintf(stderr, "  [%02d] ", i);
-			dump_instr(b->b_instr + i);
-		}
-	}
+    const char *seen = b->b_seen ? "seen " : "";
+    const char *b_return = b->b_return ? "return " : "";
+    fprintf(stderr, "used: %d, depth: %d, offset: %d %s%s\n",
+        b->b_iused, b->b_startdepth, b->b_offset, seen, b_return);
+    if (b->b_instr) {
+        int i;
+        for (i = 0; i < b->b_iused; i++) {
+            fprintf(stderr, "  [%02d] ", i);
+            dump_instr(b->b_instr + i);
+        }
+    }
 }
 #endif
 
 static PyCodeObject *
 assemble(struct compiler *c, int addNone)
 {
-	basicblock *b, *entryblock;
-	struct assembler a;
-	int i, j, nblocks;
-	PyCodeObject *co = NULL;
+    basicblock *b, *entryblock;
+    struct assembler a;
+    int i, j, nblocks;
+    PyCodeObject *co = NULL;
 
-	/* Make sure every block that falls off the end returns None.
-	   XXX NEXT_BLOCK() isn't quite right, because if the last
-	   block ends with a jump or return b_next shouldn't set.
-	 */
-	if (!c->u->u_curblock->b_return) {
-		NEXT_BLOCK(c);
-		if (addNone)
-			ADDOP_O(c, LOAD_CONST, Py_None, consts);
-		ADDOP(c, RETURN_VALUE);
-	}
+    /* Make sure every block that falls off the end returns None.
+       XXX NEXT_BLOCK() isn't quite right, because if the last
+       block ends with a jump or return b_next shouldn't set.
+     */
+    if (!c->u->u_curblock->b_return) {
+        NEXT_BLOCK(c);
+        if (addNone)
+            ADDOP_O(c, LOAD_CONST, Py_None, consts);
+        ADDOP(c, RETURN_VALUE);
+    }
 
-	nblocks = 0;
-	entryblock = NULL;
-	for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
-		nblocks++;
-		entryblock = b; 
-	}
+    nblocks = 0;
+    entryblock = NULL;
+    for (b = c->u->u_blocks; b != NULL; b = b->b_list) {
+        nblocks++;
+        entryblock = b;
+    }
 
-	/* Set firstlineno if it wasn't explicitly set. */
-	if (!c->u->u_firstlineno) {
-		if (entryblock && entryblock->b_instr)
-			c->u->u_firstlineno = entryblock->b_instr->i_lineno;
-		else
-			c->u->u_firstlineno = 1;
-	}
-	if (!assemble_init(&a, nblocks, c->u->u_firstlineno))
-		goto error;
-	dfs(c, entryblock, &a);
+    /* Set firstlineno if it wasn't explicitly set. */
+    if (!c->u->u_firstlineno) {
+        if (entryblock && entryblock->b_instr)
+            c->u->u_firstlineno = entryblock->b_instr->i_lineno;
+        else
+            c->u->u_firstlineno = 1;
+    }
+    if (!assemble_init(&a, nblocks, c->u->u_firstlineno))
+        goto error;
+    dfs(c, entryblock, &a);
 
-	/* Can't modify the bytecode after computing jump offsets. */
-	assemble_jump_offsets(&a, c);
+    /* Can't modify the bytecode after computing jump offsets. */
+    assemble_jump_offsets(&a, c);
 
-	/* Emit code in reverse postorder from dfs. */
-	for (i = a.a_nblocks - 1; i >= 0; i--) {
-		b = a.a_postorder[i];
-		for (j = 0; j < b->b_iused; j++)
-			if (!assemble_emit(&a, &b->b_instr[j]))
-				goto error;
-	}
+    /* Emit code in reverse postorder from dfs. */
+    for (i = a.a_nblocks - 1; i >= 0; i--) {
+        b = a.a_postorder[i];
+        for (j = 0; j < b->b_iused; j++)
+            if (!assemble_emit(&a, &b->b_instr[j]))
+                goto error;
+    }
 
-	if (_PyString_Resize(&a.a_lnotab, a.a_lnotab_off) < 0)
-		goto error;
-	if (_PyString_Resize(&a.a_bytecode, a.a_offset) < 0)
-		goto error;
+    if (_PyString_Resize(&a.a_lnotab, a.a_lnotab_off) < 0)
+        goto error;
+    if (_PyString_Resize(&a.a_bytecode, a.a_offset) < 0)
+        goto error;
 
-	co = makecode(c, &a);
+    co = makecode(c, &a);
  error:
-	assemble_free(&a);
-	return co;
+    assemble_free(&a);
+    return co;
 }