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BUG: gsub('a', '(b?)%1*' ...) loops (because the capture is empty).

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Roberto Ierusalimschy
1998-03-09 15:28:08 -03:00
parent e74817f8aa
commit be6d215f67
2 changed files with 7 additions and 3 deletions
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6
lstrlib.c
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@@ -1,5 +1,5 @@
/*
** $Id: lstrlib.c,v 1.9 1998/03/06 16:54:42 roberto Exp roberto $
** $Id: lstrlib.c,v 1.10 1998/03/06 18:47:42 roberto Exp roberto $
** Standard library for strings and pattern-matching
** See Copyright Notice in lua.h
*/
@@ -286,7 +286,7 @@ static char *match (char *s, char *p, struct Capture *cap)
switch (*ep) {
case '*': { /* repetition */
char *res;
if (s1 && (res = match(s1, p, cap)))
if (s1 && s1>s && (res = match(s1, p, cap)))
return res;
p=ep+1; goto init; /* else return match(s, ep+1, cap); */
}
@@ -300,7 +300,7 @@ static char *match (char *s, char *p, struct Capture *cap)
char *res;
if ((res = match(s, ep+1, cap)) != 0)
return res;
else if (s1) {
else if (s1 && s1>s) {
s = s1;
goto init; /* return match(s1, p, cap); */
}