GNU text utilities

[gnulib.git] / lib / regex.h

diff --git a/lib/regex.h b/lib/regex.h
index 40f684c..66791b0 100644 (file)
--- a/lib/regex.h
+++ b/lib/regex.h
@@ -130,6 +130,10 @@ typedef unsigned reg_syntax_t;
    If not set, then an unmatched ) is invalid.  */
 #define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1)
 
+/* If this bit is set, succeed as soon as we match the whole pattern,
+   without further backtracking.  */
+#define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1)
+
 /* This global variable defines the particular regexp syntax to use (for
    some interfaces).  When a regexp is compiled, the syntax used is
    stored in the pattern buffer, so changing this does not affect
@@ -460,9 +464,11 @@ extern void re_set_registers
   _RE_ARGS ((struct re_pattern_buffer *buffer, struct re_registers *regs,
              unsigned num_regs, regoff_t *starts, regoff_t *ends));
 
+#ifdef _REGEX_RE_COMP
 /* 4.2 bsd compatibility.  */
 extern char *re_comp _RE_ARGS ((const char *));
 extern int re_exec _RE_ARGS ((const char *));
+#endif
 
 /* POSIX compatibility.  */
 extern int regcomp _RE_ARGS ((regex_t *preg, const char *pattern, int cflags));