[Libreoffice-bugs] [Bug 126600] No option to turn off Font Fallback and Glyph Fallback

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=126600

--- Comment #3 from V Stuart Foote <vstuart.foote at utsa.edu> ---
IIUC identifying the actual font used for missing glyph(s) fallback (i.e. no
Unicode coverage) is managed by the os/DE in use, i.e. fontconfig on Linux,
which actually makes the font selection for missing glyphs/fonts based on
configuration.

LibreOffice's UI handling of replacement fonts and fallback is related but
already open: see bug 61134, bug 94327, bug 96872

Only question there is if the UI is made sufficiently granular to handle single
codepoint fallback, e.g. maybe provide a Find & Replace dialog mode for glyph
fallback.

Disabling glyph fallback substitution--and so showing an installed/assigned
fonts' "undefined" placeholder glyph on LO document canvas--is a legitimate
approach to handling glyph fallback.

It was tangentially provided but has now been removed by dropping
"SAL_DISABLE_FC_SUBST" control.

The general user preference will be for glyph fallbak as provided by os/DE,
IMHO don't see much demand to override that as IIUC it is not possible to
implement cross platform.  But I'd like to hear dev perspective on that.

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