Hello Wei-Lun-san,

From: Wei-Lun Chao <bluebat@member.fsf.org>
Subject: Re: [PATCH v2] localedata: Updates for Taiwanese locales [BZ #24409]
Date: Thu, 13 May 2021 11:53:38 +0800

> > > Rationale:
> > > * Header cleanup: make the header of localedata files consistent
> > > * Remove space (abmon): remove the extra prefix space in abmon 1~9
> > 
> > Why are you trying to remove the extra prefix space in abmon 1..9?
> > By fixing the display width of abbreviated month names (%b) in the
> > same way as "Jan", "Feb", "Mar", ..., it has the effect of making the
> > display width constant, such as system log.
> > I don't think we should remove the leading space in abmon 1..9.
> 
> Without this patch, "date +%b" will output with a leading space for month 1..9.
> And the day number makes the display width inconstant already.
> So I think single space would be a better separator.

The elements defined in (ab)mon and (ab)day in the current *_TW locale
are summarized in the attached file mon+day.txt.  In each locale, the
display widths of mon (%B) and abday (%A) can change, while the
display widths of abmon (%b) and abday (%a) are constant.

Date and time notations such as logs and form lists may sometimes be
in RFC2822 (%a, %d %b %Y %T %z) or ctime (%a %b %d %T %Z %Y) format
with local locales.

With this patch, these display widths will change in *_TW locale,
even though the display width of each conversion specification that
makes up them is intended to be constant.  Please see the attached
file ctime.txt.

Regards,
TAMUKI Shoichi