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regcomp.sym: Note specialized use of 'flags' in 2 OPs
[perl5.git] / regnodes.h
index e87d912..412a630 100644 (file)
@@ -83,8 +83,8 @@
 #define        NREFFA                  69      /* 0x45 Match already matched string, folded using unicode rules for non-utf8, no mixing ASCII, non-ASCII */
 #define        LONGJMP                 70      /* 0x46 Jump far away. */
 #define        BRANCHJ                 71      /* 0x47 BRANCH with long offset. */
-#define        IFMATCH                 72      /* 0x48 Succeeds if the following matches. */
-#define        UNLESSM                 73      /* 0x49 Fails if the following matches. */
+#define        IFMATCH                 72      /* 0x48 Succeeds if the following matches; non-zero flags "f" means lookbehind assertion starting "f" characters before current */
+#define        UNLESSM                 73      /* 0x49 Fails if the following matches; non-zero flags "f" means lookbehind assertion starting "f" characters before current */
 #define        SUSPEND                 74      /* 0x4a "Independent" sub-RE. */
 #define        IFTHEN                  75      /* 0x4b Switch, should be preceded by switcher. */
 #define        GROUPP                  76      /* 0x4c Whether the group matched. */