Date: Tue, 15 Aug 2017 10:28:16 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: fnmatch bug? escaping of '-' and ']' inside [...] does not work. On Tue, Aug 15, 2017 at 03:12:17PM +0200, Denys Vlasenko wrote: > Moving bbox build to musl did uncover one definite bug. > bbox has gazillion tests for its shells, and one of them > started failing. I added debug printout and with it, > the following fnmatch calls give different results now: > > ash: fnmatch(pattern:'[a\-c]',str:'-',0):1 > ash: fnmatch(pattern:'[\]]',str:']',0):1 > ash: fnmatch(pattern:'[a\]]',str:']',0):1 > > glibc and uclibc threat the above as a match. I believe this is connected to a known discrepancy between what the standard seems to say and what glibc is doing. I'll see if I can dig up past discussions of it. If it's coming up again, it's likely that this is an issue that needs a proper interpretation (and possibly fix in the language of the standard, if the current text really does imply something different than what it's supposed to; the fix might end up being along the lines of "it's unspecified whether..."). Rich
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