(RE_NO_POSIX_BACKTRACKING): New macro.

diff --git a/regex.h b/regex.h
index 55927f627c959118914a93d6a70731266b2579a7..66791b0670b3f6e060d4a2d1e07f348f422b0a95 100644 (file)
--- a/regex.h
+++ b/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