diff options
Diffstat (limited to 'src/include/regex/regguts.h')
| -rw-r--r-- | src/include/regex/regguts.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/include/regex/regguts.h b/src/include/regex/regguts.h index 8db631c83bb..91a52840c47 100644 --- a/src/include/regex/regguts.h +++ b/src/include/regex/regguts.h @@ -477,13 +477,14 @@ struct subre #define MIXED 04 /* mixed preference below */ #define CAP 010 /* capturing parens here or below */ #define BACKR 020 /* back reference here or below */ +#define BRUSE 040 /* is referenced by a back reference */ #define INUSE 0100 /* in use in final tree */ -#define NOPROP 03 /* bits which may not propagate up */ +#define UPPROP (MIXED|CAP|BACKR) /* flags which should propagate up */ #define LMIX(f) ((f)<<2) /* LONGER -> MIXED */ #define SMIX(f) ((f)<<1) /* SHORTER -> MIXED */ -#define UP(f) (((f)&~NOPROP) | (LMIX(f) & SMIX(f) & MIXED)) +#define UP(f) (((f)&UPPROP) | (LMIX(f) & SMIX(f) & MIXED)) #define MESSY(f) ((f)&(MIXED|CAP|BACKR)) -#define PREF(f) ((f)&NOPROP) +#define PREF(f) ((f)&(LONGER|SHORTER)) #define PREF2(f1, f2) ((PREF(f1) != 0) ? PREF(f1) : PREF(f2)) #define COMBINE(f1, f2) (UP((f1)|(f2)) | PREF2(f1, f2)) char latype; /* LATYPE code, if lookaround constraint */ |