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users/19059 based on users/19058: remove ineffiency with multiple * matches

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Peter Stephenson 2014-09-08 16:38:51 +01:00
parent 956829c18e
commit 8bf3595e3a
3 changed files with 23 additions and 0 deletions
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10
Src/pattern.c
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@ -3012,6 +3012,16 @@ patmatch(Upat prog)
break;
case P_STAR:
/* Handle specially for speed, although really P_ONEHASH+P_ANY */
while (P_OP(next) == P_STAR) {
/*
* If there's another * following we can optimise it
* out. Chains of *'s can give pathologically bad
* performance.
*/
scan = next;
next = PATNEXT(scan);
}
/*FALLTHROUGH*/
case P_ONEHASH:
case P_TWOHASH:
/*