Re: CSV parsing and other issues (Re: LC_NUMERIC)

[Eli Zaretskii]

> From: Filipp Gunbin <fgunbin@fastmail.fm>
> Cc: boruch_baum@gmx.com,  manikulin@gmail.com,  emacs-devel@gnu.org
> Date: Fri, 11 Jun 2021 21:52:57 +0300
> 
> I mean that for every specifier which could be affected by locale (but
> isn't), there could be additional specifier, which takes locale into
> account.  Less awkward, there could be an explicit modifier which says
> "use locale for this specifier in format".  Something like `O' or `E'
> modifier in "format-time-string".

That could work, but if we rely on libc functions for the
locale-dependent behavior, it could be slow, because switching a
locale could be expensive.