[Libreoffice-bugs] [Bug 139210] New: Diacritical mark handling in Writer (may apply to other components)

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=139210

            Bug ID: 139210
           Summary: Diacritical mark handling in Writer (may apply to
                    other components)
           Product: LibreOffice
           Version: 7.0.4.2 release
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: page74010-sf at yahoo.fr

Created attachment 168467
  --> https://bugs.documentfoundation.org/attachment.cgi?id=168467&action=edit
Exampled of combined letters

Not sure if this is a bug, clarification needed from developers.

Base glyphs in Unicode may be modified with "combining characters", commonly
called diacritics (accents, lines, …).

I expect most of them to be centered over the letter they modify. Some, by
property of the language they belong to, may be offset slightly to right or
left.

However when using combining lines, the diacritics are "largely" offset to the
right, partly covering the next character. Some diacritic lines have property
"connects on left and right" or one of the sides only. The offset prevents
proper connection with preceding/following mark.

Since these combined characters do not correspond to "language characters"
(meaning they are fancy decorated letter, probably not used in any language in
the world), I don't know if this "decoration" is an abuse of the feature or a
real bug.

The bug may also be located in the font renderer.

Attached file contains examples of combined characters. Those with acute accent
or macron behave as expected, but those with combining overline don't.

Thanks to clarify the issue.

Report filed as a follow-on to
https://ask.libreoffice.org/en/question/284076/hide-dotted-circle-when-using-a-combining-character/

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