Re: BUG #15548: Unaccent does not remove combining diacritical characters

On Thu, 10 Jan 2019 at 01:09, Michael Paquier <michael@paquier.xyz> wrote:

> OK, committed then. I have yet to study yet the other part of the
> proposal regarding diatritical characters.  Patch 3 has a conflict for
> the regression tests, so a rebase would be needed.  That's not a big
> deal though to resolve the conflict.  I am also a bit confused by the
> newly-generated unaccent.rules.  Why nothing shows up for the second
> column (around line 414 for example)?  Shouldn't we have mapping
> characters?
>

That concerned me, as well. I have confirmed the lines are not empty. If
you open the file in a text editor (I'm using KDE's Kate), and insert a
standard character at the beginning of one of those lines, the diacritic
then appears, combined with the character you just entered. The only
program I've found that wants to display them on their own is vi (and I
only just thought of trying that).

From what I can tell, this is likely a font issue:

   - http://unicode.org/faq/char_combmark.html#12b
   -
   https://superuser.com/questions/852901/why-are-some-combining-diacritics-shifted-to-the-right-in-some-programs

Hugh