Date: Wed, 7 Sep 2022 16:49:36 -0400 From: Rich Felker <dalias@...c.org> To: Javier Steinaker <jsteinaker@...il.com> Cc: musl@...ts.openwall.com Subject: Re: strptime_l implementation On Thu, Sep 08, 2022 at 05:36:34AM +1000, Javier Steinaker wrote: > Hello everybody, > > The Haiku project (an alternative OS) switched to using musl a few weeks > ago. Now I'm only an occasional contributor, but I hit an use case where > having strptime_l would be desired/useful (parsing web cookies, which are > always in english, independently of the locale selected by the user). Since > nl_langinfo_l is already in place, I figured out it wouldn't be so > difficult to move the current code to an internal function, and then have > strptime and strptime_l getting the locale from the system in the first > case and as an argument in the second, and call that code. > > My question is: do you have plans to have strptime_l implemented? Would you > be interested in merging if someone does? Would it break the ABI or > something? I'm asking because it made more sense to me to do this upstream > and then don't having to maintain a separate version if it was useful here. > Otherwise, we will just find our way in the Haiku code, via implementing > strptime_l or with another solution. There are some number of nonstandard *_l functions, some of which have been requested for addition. My request on these has been for someone to do a survey of how many there actually are, and whether it makes sense to add them all or some well-characterized subset of them. I don't want to just inconsistently add one here and there, while leaving others missing, and I don't want to get in a situation where we feel obligated to add a bunch of dubious interfaces just by precedent. If you'd like to make such a list/count, I'm sure it would be appreciated by others who have raised the topic before, and might end up with the functions getting added. Short of that, the portable way to do locale_t-parameterized calls to functions that don't have their own *_l version is by calling uselocale() before/after to save/swap and restore the original locale. This operation costs essentially nothing and is a completely viable way to do things. Rich
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