GNU bug report logs - #21846
25.0.50; emacs hebrew script bidi nikud rendering bug

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From: Mark David <mhd <at> yv.org>
To: Benjamin Riefenstahl <b.riefenstahl <at> turtle-trading.net>
Cc: 21846 <at> debbugs.gnu.org, handa <at> gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: bug#21846: 25.0.50; emacs hebrew script bidi nikud rendering bug
Date: Sun, 29 Nov 2015 17:59:19 -0500

[Message part 1 (text/plain, inline)]

The nikud placement is good to excellent in the fonts tried so far.  

However, I tried a few more, and found one that's terrible: Aharoni

Following is output from M-x describe-char with cursor on the double-yud character in the first word of the first paragraph.  This font seems to systematically misplace not all but most base char + nikud combinations in my sample file.  (Screen shot attached.)  Any way to fix this?  

Thanks,

Mark

             position: 3 of 2166 (0%), column: 1
            character: ײ‎ (displayed as ײ‎) (codepoint 1522, #o2762, #x5f2)
    preferred charset: unicode (Unicode (ISO10646))
code point in charset: 0x05F2
               script: hebrew
               syntax: w 	which means: word
             category: .:Base, R:Right-to-left (strong)
             to input: type "C-x 8 RET 5f2" or "C-x 8 RET HEBREW LIGATURE YIDDISH DOUBLE YOD"
          buffer code: #xD7 #xB2
            file code: #xD7 #xB2 (encoded by coding system utf-8-unix)
              display: composed to form "ײַ" (see below)

Composed with the following character(s) "ַ" using this font:
  xft:-culmus-Aharoni CLM-semilight-normal-normal-*-33-*-*-*-*-0-iso10646-1
by these glyphs:
  [0 1 1522 145 13 -1 12 18 -10 nil]
  [0 1 1463 103 0 -5 5 -2 4 nil]

Character code properties: customize what to show
  name: HEBREW LIGATURE YIDDISH DOUBLE YOD
  old-name: HEBREW LETTER DOUBLE YOD
  general-category: Lo (Letter, Other)
  decomposition: (1522) ('ײ')






On 11/28/15, 2:33 PM, "Benjamin Riefenstahl" <b.riefenstahl <at> turtle-trading.net> wrote:

>All the problems with the test text that I can see are fixed in m17n,
>see the report opened there
><https://savannah.nongnu.org/bugs/index.php?46399>.
>
>@Mark: Can you check that there is nothing open from your POV?
>
>Workaround procedure: As long as there is not new version of m17n
>(i.e. >= 1.7.0) that can just be installed through package management,
>the fixes so far can be applied by creating a directory ~/.m17n.d and
>putting the file
><http://git.savannah.gnu.org/cgit/m17n/m17n-db.git/plain/FLT/HEBR-OTF.flt>
>there.

[Aharoni bad nikud 2015-11-29 17.57.22.png (image/png, attachment)]

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