In LibreOffice Writer, when I try to switch the lettercase for many Cyrillic Extended-B letters, none of them responced. Could you please fix this bug?
Migrating Whiteboard tags to Keywords: (needsDevEval)
Created attachment 121551 [details] My testcase This is my testcase for an Old Cyrillic alphabet, copied from Wikipedia article “Cyrillic script”.
Created attachment 121552 [details] My testcase This is my testcase for an Old Cyrillic alphabet, copied from Wikipedia article “Cyrillic script”.
Created attachment 123616 [details] Switch the letter case for Cyrillic, copied from Wikipedia. On LibreOffice Dev 5.1.3, Cyrillic Extended-B letters still have no responce when change their lettercase. Version: 5.1.3.0.0+ (x64) Build ID: 99ab65e9139d60542344041a96ab8d3a4dc39bdb CPU Threads: 4; OS Version: Windows 6.19; UI Render: default; TinderBox: Win-x86_64@62-TDF, Branch:libreoffice-5-1, Time: 2016-03-16_01:45:52 Locale: zh-CN (zh_CN)
Please attach an actual document.
Created attachment 128629 [details] Test file
Created attachment 128630 [details] This is what I have done on LODev Writer Version: 5.3.0.0.alpha1+ Build ID: 05d2a66955f8a6552a79696474386ca9f45f9ef2 CPU Threads: 4; OS Version: Windows 6.2; UI Render: default; Layout Engine: new; TinderBox: Win-x86@62-merge-TDF, Branch:MASTER, Time: 2016-11-07_23:34:48 Locale: zh-CN (zh_CN); Calc: group
You can get the font from here if you need: http://www.ponomar.net/files/fonts-churchslavonic.zip
So it seems we use our own case folding tables in https://gerrit.libreoffice.org/gitweb?p=core.git;a=blob;f=i18nutil/source/utility/casefolding_data.h, we need to either update the tables (will need to understand how they work first) or switch the case mapping to use ICU instead.
Since ICU is already intergrated in LibreOffice, this can be fixed via replacing the own case folding tables.
I think switching to using ICU would be the better idea in the long run. However, I cannot work on this, since I do not know how ICU is integrated into LO, and I cannot find any documentation of this.
Maybe we can ask them for help.
I found documentation at ICU website just now. Does it help? http://userguide.icu-project.org/transforms/general
Also related to this problem is the fact that characters in Cyrillic Extended-C (and perhaps some characters in Cyrillic Extended-B as well?) are not recognized as word characters. Hence LibreOffice does not correctly determine word boundaries for Church Slavic text. This bug is really annoying because it makes my new Church Slavic spell-checker go berserk.
Dear Aleksandr Andreev, This bug has been in ASSIGNED status for more than 3 months without any activity. Resetting it to NEW. Please assigned it back to yourself if you're still working on this.
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If there's really no way to handle case folding with ICU, you can replace the LibreOffice's own case folding tables via integring following files: https://www.unicode.org/Public/UNIDATA/CaseFolding.txt https://www.unicode.org/Public/UNIDATA/SpecialCasing.txt Maybe you can write an automatical program or script to convert the content to be our own table data.
Martin, what do you think of?