auto import from //depot/cupcake/@135843
diff --git a/sh/syntax.c b/sh/syntax.c
new file mode 100644
index 0000000..094f674
--- /dev/null
+++ b/sh/syntax.c
@@ -0,0 +1,102 @@
+/* $NetBSD: syntax.c,v 1.1 2004/01/17 17:38:12 dsl Exp $ */
+
+#include "shell.h"
+#include "syntax.h"
+#include "parser.h"
+#include <limits.h>
+
+#if CWORD != 0
+#error initialisation assumes 'CWORD' is zero
+#endif
+
+#define ndx(ch) (ch + 1 - CHAR_MIN)
+#define set(ch, val) [ndx(ch)] = val,
+#define set_range(s, e, val) [ndx(s) ... ndx(e)] = val,
+
+/* syntax table used when not in quotes */
+const char basesyntax[257] = { CEOF,
+ set_range(CTL_FIRST, CTL_LAST, CCTL)
+ set('\n', CNL)
+ set('\\', CBACK)
+ set('\'', CSQUOTE)
+ set('"', CDQUOTE)
+ set('`', CBQUOTE)
+ set('$', CVAR)
+ set('}', CENDVAR)
+ set('<', CSPCL)
+ set('>', CSPCL)
+ set('(', CSPCL)
+ set(')', CSPCL)
+ set(';', CSPCL)
+ set('&', CSPCL)
+ set('|', CSPCL)
+ set(' ', CSPCL)
+ set('\t', CSPCL)
+};
+
+/* syntax table used when in double quotes */
+const char dqsyntax[257] = { CEOF,
+ set_range(CTL_FIRST, CTL_LAST, CCTL)
+ set('\n', CNL)
+ set('\\', CBACK)
+ set('"', CDQUOTE)
+ set('`', CBQUOTE)
+ set('$', CVAR)
+ set('}', CENDVAR)
+ /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
+ set('!', CCTL)
+ set('*', CCTL)
+ set('?', CCTL)
+ set('[', CCTL)
+ set('=', CCTL)
+ set('~', CCTL)
+ set(':', CCTL)
+ set('/', CCTL)
+ set('-', CCTL)
+};
+
+/* syntax table used when in single quotes */
+const char sqsyntax[257] = { CEOF,
+ set_range(CTL_FIRST, CTL_LAST, CCTL)
+ set('\n', CNL)
+ set('\'', CSQUOTE)
+ /* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */
+ set('!', CCTL)
+ set('*', CCTL)
+ set('?', CCTL)
+ set('[', CCTL)
+ set('=', CCTL)
+ set('~', CCTL)
+ set(':', CCTL)
+ set('/', CCTL)
+ set('-', CCTL)
+};
+
+/* syntax table used when in arithmetic */
+const char arisyntax[257] = { CEOF,
+ set_range(CTL_FIRST, CTL_LAST, CCTL)
+ set('\n', CNL)
+ set('\\', CBACK)
+ set('`', CBQUOTE)
+ set('\'', CSQUOTE)
+ set('"', CDQUOTE)
+ set('$', CVAR)
+ set('}', CENDVAR)
+ set('(', CLP)
+ set(')', CRP)
+};
+
+/* character classification table */
+const char is_type[257] = { 0,
+ set_range('0', '9', ISDIGIT)
+ set_range('a', 'z', ISLOWER)
+ set_range('A', 'Z', ISUPPER)
+ set('_', ISUNDER)
+ set('#', ISSPECL)
+ set('?', ISSPECL)
+ set('$', ISSPECL)
+ set('!', ISSPECL)
+ set('-', ISSPECL)
+ set('*', ISSPECL)
+ set('@', ISSPECL)
+};