https://bugs.freedesktop.org/show_bug.cgi?id=64632

          Priority: medium
            Bug ID: 64632
          Assignee: [email protected]
           Summary: FORMATTING: mtextra font needed even though it can be
                    mapped to unicode
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: [email protected]
          Hardware: x86-64 (AMD64)
            Status: UNCONFIRMED
           Version: 4.1.0.0.alpha0+ Master
         Component: Writer
           Product: LibreOffice

Created attachment 79345
  --> https://bugs.freedesktop.org/attachment.cgi?id=79345&action=edit
Document using MT Extra, search for "flag is set according to the result of the
operation"

The MT Extra font is for glyphs used in mathtype, it does not have a standard
mapping.

In the attached document, the mt extra font is used for the updown arrow ↕.
This font is not installed on Fedora, so it not visible, however all
characters[1] in this font can be mapped to unicode entries.

See the following table:

http://www.dessci.com/en/support/mathtype/tech/encodings/mtextra.htm

I'm not sure where this should be defined. There is an incomplete mapping for
this font in unotools/source/misc/fontcvt.cxx line 648, but this is only used
for document export, not display.

I'm not sure where this should be implemented; any hints for this would be
welcome, I'm happy to work on a patch.

[1] With the exception of the Apple Logo

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