https://bugs.documentfoundation.org/show_bug.cgi?id=101599
Bug ID: 101599
Summary: [EDITING] Inserting certain Unicode combining
characters causes text in paragraph to appear
corrupted.
Product: LibreOffice
Version: 5.2.0.4 release
Hardware: x86-64 (AMD64)
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Writer
Assignee: [email protected]
Reporter: [email protected]
Created attachment 126897
--> https://bugs.documentfoundation.org/attachment.cgi?id=126897&action=edit
A visual representation of the bug, showing the corrupted display of text
caused by the use of a combining character.
Using certain Unicode combining characters in LibreOffice Writer causes text in
the same paragraph block as the combining character to appear corrupted, with
arbitrary characters replaced with arbitrary other characters. The text itself
does not change—if I copy and paste the text to another application, the text I
originally typed is preserved—it is merely the display and presentation of the
text which is corrupted.
To reproduce the bug:
1. Type some text in a LibreOffice Writer document.
- Sample text:
Everything is fine, until I combine.
2. Type or paste a Unicode combining character into the text.
- The characters in the Unicode block U+0300–036F trigger the bug.
- Sample text:
⃝ͤ
I expect the combining character will be displayed properly, so long as the
font supports the character. While this does happen, arbitrary other text in
the same paragraph block appears corrupted.
Included is a screenshot to demonstrate the bug. The two lines contain the same
text, with one exception: the final 'e' on the second line has been replaced by
U+0364, COMBINING LATIN SMALL LETTER E. Despite this, the visual display of the
text on the second line is substantially different.
Of note:
- Printing the document or exporting it as a PDF renders the correct text.
- Exporting as a JPEG or PNG image renders the corrupted text.
- The bug exists with multiple fonts, although which characters appear
corrupted for a given block of text varies with each.
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