OTF/TTF glyph substitution not working

[Kyungjoon Lee]

Glyph substitution doesn't work on Windows XP, even if Uniscribe supports it in Notepad.

Versions tested were 0.40, 0.45.1, 0.46.

Testcase for Windows is attached. You will need the Junicode font.

http://junicode.sourceforge.net/

Screenshots of desired rendering and Inkscape's rendering:

http://blacksun.ivyro.net/img/junicode_ligatures_resized.png

[Kyungjoon Lee (kjoonlee)]

Another easy way to test: DejaVu Sans is easily available.

Typing "fluffiness" on Linux gives ligatures; typing it on Windows doesn't.

[Marcin Floryan (mfloryan)]

Just tested on 0.47 (SVN) with Uniscribe installed and it is not working as expected (although Notepad does render things properly). Is this a pango issue though? An interesting read on the subject is here: http://www.catch22.net/tuts/editor11.asp

[Kyungjoon Lee (kjoonlee)]

I don't know much about pango, but GIMP uses it AFAIK and GIMP handles ligatures very well on Windows.

About this time last year, I had spoken to Richard Hughes after mentioning this in the user mailing list.

He said that this was due to different interfaces to the font information, on Windows and Linux.

[Kyungjoon Lee (kjoonlee)]

But there's one thing I don't understand.

e U+02E5 U+02E7

These three codepoints show up as two glyphs with the Doulos SIL font, even on Windows.

e˥˧

[Kyungjoon Lee (kjoonlee)]

Bump. Could someone decide an importance for this bug, please? ;)

[jazzynico (jazzynico)]

Reproduced on Windows XP, Inkscape 0.47 and 0.48.3.1.
Not reproduced with trunk revision 11737.

[Kyungjoon Lee (kjoonlee)]

Does not affect the canvas in revision 11656, but still affects the preview (Shift+Ctrl+T). Should I enter a new bug for this? Thanks.

[su_v (suv-lp)]

> Does not affect the canvas in revision 11656, but still affects the preview
> (Shift+Ctrl+T). Should I enter a new bug for this? Thanks.

AFAIU already covered by
Bug #1049455 “Kerning pairs not working in previews (Windows, Quartz)”
<https://bugs.launchpad.net/inkscape/+bug/1049455>

[Kyungjoon Lee (kjoonlee)]

This is a bit different from that bug, though.

Kerning pairs:
* Was bugged for canvas, OK for previews
* Is bugged for previews now, OK for canvas

Glyph substitution:
* Was bugged for canvas _and_ previews
* Is bugged for previews now, OK for canvas