[Libreoffice-bugs] [Bug 115050] "Zero Width Non Joiner" does not select alternate glyph in a certain font

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=115050

--- Comment #34 from Patrick Schönbach <pschoenb at gmx.de> ---
http://www.unicode.org/versions/Unicode10.0.0/UnicodeStandard-10.0.pdf p. 847

Non-joiner. U+200C zero width non-joiner is intended to break *both cursive
connections and ligatures* in rendering.

This means:

-Final glyph form before ZWNJ.
- Initial glyph form after ZWNJ.

This is the responsibility of the rendering engine, not the font!

"long s" definitely counts as cursive connection as it only can appear in
initial position and intermediary position, but never* in final position.

So, the rendering engine has to display the correct character alterbatives when
dealing with a ZWNJ.

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