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fix bad character checking in wordexp

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the character sequence '$((' was incorrectly interpreted as the
opening of arithmetic even within single-quoted contexts, thereby
suppressing the checks for bad characters after the closing quote.

presently bad character checking is only performed when the WRDE_NOCMD
is used; this patch only corrects checking in that case.
This commit is contained in:
Rich Felker 2015-02-11 01:37:01 -05:00
parent 700e08993c
commit 594ffed82f
1 changed files with 1 additions and 0 deletions
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src/misc/wordexp.c
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@ -77,6 +77,7 @@ static int do_wordexp(const char *s, wordexp_t *we, int flags)
if (!(sq|dq|np)) return WRDE_BADCHAR;
break;
case '$':
if (sq) break;
if (s[i+1]=='(' && s[i+2]=='(') {
i += 2;
np += 2;