Implementation of PEP 3101, Advanced String Formatting.
Known issues:
The string.Formatter class, as discussed in the PEP, is incomplete.
Error handling needs to conform to the PEP.
Need to fix this warning that I introduced in Python/formatter_unicode.c:
Objects/stringlib/unicodedefs.h:26: warning: `STRINGLIB_CMP' defined but not used
Need to make sure sign formatting is correct, more tests needed.
Need to remove '()' sign formatting, left over from an earlier version of the PEP.
diff --git a/Objects/stringlib/stringdefs.h b/Objects/stringlib/stringdefs.h
new file mode 100644
index 0000000..af9bbd6
--- /dev/null
+++ b/Objects/stringlib/stringdefs.h
@@ -0,0 +1,23 @@
+#ifndef STRINGLIB_STRINGDEFS_H
+#define STRINGLIB_STRINGDEFS_H
+
+/* this is sort of a hack. there's at least one place (formatting
+ floats) where some stringlib code takes a different path if it's
+ compiled as unicode. */
+#define STRINGLIB_IS_UNICODE 0
+
+#define STRINGLIB_CHAR char
+#define STRINGLIB_TYPE_NAME "string"
+#define STRINGLIB_EMPTY string_empty
+#define STRINGLIB_ISDECIMAL(x) ((x >= '0') && (x <= '9'))
+#define STRINGLIB_TODECIMAL(x) (STRINGLIB_ISDECIMAL(x) ? (x - '0') : -1)
+#define STRINGLIB_FILL memset
+#define STRINGLIB_STR PyString_AS_STRING
+#define STRINGLIB_LEN PyString_GET_SIZE
+#define STRINGLIB_NEW PyString_FromStringAndSize
+#define STRINGLIB_RESIZE _PyString_Resize
+#define STRINGLIB_CHECK PyString_Check
+#define STRINGLIB_CMP memcmp
+#define STRINGLIB_TOSTR PyObject_Str
+
+#endif /* !STRINGLIB_STRINGDEFS_H */