Date: Tue, 27 Oct 2020 18:25:15 -0400 From: Rich Felker <dalias@...c.org> To: Mark Wielaard <mark@...mp.org> Cc: Florian Weimer <fweimer@...hat.com>, musl@...ts.openwall.com, Érico Rolim <erico.erc@...il.com>, elfutils-devel@...rceware.org, Max Rees <maxcrees@...com> Subject: Re: Re: [QUESTION] Which fnmatch() functionality does elfutils depend on? On Tue, Oct 27, 2020 at 11:19:11PM +0100, Mark Wielaard wrote: > Hi Rich, > > On Tue, Oct 27, 2020 at 01:08:17PM -0400, Rich Felker wrote: > > On Tue, Oct 27, 2020 at 04:04:44PM +0100, Mark Wielaard wrote: > > > Right, it is also adopted by zsh and some other shells. The big-O > > > properties don't really matter in this case because fnmatch is used on > > > small input strings like file names (or in this case section names). > > > > They do because they're also in space, unless you want > > exponential-time which is huge even on small inputs, and greater than > > O(1) space requirement means the interface can't satisfy its contract > > to return a conclusive result for valid inputs. > > But that isn't the contract if fnmatch. fnmatch returns 0 for a match > and non-zero for either a non-match or some error. So if your > algorithm hits some error case, like out of memory, returning a > non-zero result is fine. > > I believe the extended wildcard pattern are widely supported and > useful. If you don't want to implement them because they aren't in any > standardized enough yet we can ask the Austin Group to add them to > fnmatch. They have adopted other GNU flags for fnmatch in the past. And I can ask them not to. Your hostility is really unwelcome here. Rich
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