Apache OpenOffice (AOO) Bugzilla – Issue 98790
Aqua: workaround ATSUI-problem with BiDi-mirrored chars
Last modified: 2017-05-20 11:33:37 UTC
Followup to issue 95259: ATSUI doesn't use the unicode rules for character mirroring in RTL-contexts. Instead it depends on the font providing the Mac-specific "prop" table (http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6prop.html) and the glyph properties being set properly for every glyph. This table is usually not even available in third-party fonts, especially not for fonts targeted at other platforms. Even if that table is available the mirroring bits are often not set correctly for non-Hebrew/non-Arabic fonts.
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