GNU bug report logs - #48148
27.2; ox-ascii breaks TITLE line wrongly when 2 width char is used

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Shingo Tanaka <shingo.fg8 <at> gmail.com>
Cc: shingo.fg8 <at> gmail.com, 48148 <at> debbugs.gnu.org, mail <at> nicolasgoaziou.fr
Subject: bug#48148: 27.2; ox-ascii breaks TITLE line wrongly when 2 width char is used
Date: Sun, 02 May 2021 15:43:28 +0300

> Date: Sun, 02 May 2021 20:33:23 +0900
> From: Shingo Tanaka <shingo.fg8 <at> gmail.com>
> Cc: Nicolas Goaziou <mail <at> nicolasgoaziou.fr>,
> 	shingo.fg8 <at> gmail.com,
> 	48148 <at> debbugs.gnu.org
> 
> This bug (bug#48148) is actually caused by the difference of the width
> detection methods between line 1036 in ox-ascii.el (`length') and
> `fill-region'.  This is because `org-ascii-template--document-title' first
> detects the title width by `length' and then tries to fill it by
> `org-ascii--fill-string' which does the action by `fill-region' inside.  And
> since the filling point in `fill-region' is based on `move-to-column' and it
> looks like giving the same result as `string-width', I think `string-width'
> is TRT for this bug.
> 
> In other words, specific to this bug, only the same width detection method as
> `fill-region' is required, even if it doesn't give you the precise width
> displayed.
> 
> Please correct me if I am wrong.

I think you are right, thanks.

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