LibreOffice does not appear to provide correct support for Glagolitic (Unicode blocks U+2C00 to U+2C5F and U+1E000 to U+1E02F). The following is not supported:
1. No support for OpenType positioning (see picture).
2. Cannot switch the lettercase for Glagolitic characters.
Tested on Linux Mint 17 (Qiana), Version: 188.8.131.52.
Steps to Reproduce:
1. See attached file with Glagolitic text.
2. Glagolitic font may be donwloaded from here: http://sci.ponomar.net/fonts.html
1. Combining letters and diacritics not positioned correctly
2. Casing of lowercase to uppercase does not work.
1. Diacritics and combining letters should be positioned correctly.
2. Cases should be cycled.
User Profile Reset: No
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0
Created attachment 138629 [details]
Screenshot of actual and expected (Firefox) results
Created attachment 138630 [details]
I think this patch fixes at least the case folding issues:
Aleksandr Andreev committed a patch related to this issue.
It has been pushed to "master":
tdf#114681: Adding support for case folding in Glagolitic
It will be available in 6.1.0.
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.
Looks like the patch also fixes the OpenType positioning issues for Glagolitic (see attached), so perhaps this can be now marked Resolved?
Created attachment 138832 [details]
Glyph positioning after applying patch.
Is it possible to port to 6.0?
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Looks like glyph positioning is now fine. However, converting Glagolitic lowercase to uppercase does not work in Version: 184.108.40.206
Build ID: 1:6.0.7-0ubuntu0.18.04.2.