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Date: Tue, 29 Mar 2016 17:11:48 +0300 (MSK)
From: Alexander Monakov <>
To: Evan Shaw <>
Subject: Re: glibc strftime extensions

On Tue, 29 Mar 2016, Evan Shaw wrote:
> glibc extends strftime as documented in [1]. Might musl implement some
> or all of these at some point, or have they been deliberately omitted?
> OS X also partially implements the same extensions[2], and the glibc
> docs mention that "a few other systems provide similar features" but
> doesn't get specific. I haven't taken the time to look at other libc
> implementations yet.

In such cases it's usually useful to check what BSD libc implementations do;
for example, FreeBSD documents provision of '-', '_', '0' flags:

Thus I think providing -_0 in musl makes sense to consider, given significant
precedent and low implementation cost.


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