RESOLVED FIXED 135510
Incorrect rendering of Unicode combining half marks on OS X 
https://bugs.webkit.org/show_bug.cgi?id=135510
Summary Incorrect rendering of Unicode combining half marks on OS X
Chris Adams
Reported 2014-08-01 09:58:35 PDT
One of our users reported a problem with the text displayed on http://www.wdl.org/en/item/10643/. The author name on that page uses the Unicode combining half marks COMBINING LIGATURE LEFT HALF and COMBINING LIGATURE RIGHT HALF (U+FE20, U+FE21) According to the Unicode 6.0 specification – see page 235-236 of http://www.unicode.org/versions/Unicode6.0.0/ch07.pdf – two adjacent marks should combine into a single curve. On OS X, the behaviour depends whether font substitution occurred so e.g. the current WebKit Nightly will display the tests at http://chris.improbable.org/experiments/browser/combining-half-marks/ correctly only for Arial but most other fonts will display incorrectly. Recent versions of Internet Explorer on Windows 7 or later display correctly in all cases. Chrome and Firefox are also inconsistent depending on the OS and font combinations. Previously reported to Apple as rdar://13105608
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mitz
Comment 1 2014-08-01 21:08:17 PDT
Also happens in TextEdit with the same font, so likely not a WebKit issue.
Ebrahim Byagowi
Comment 2 2017-09-16 02:03:11 PDT
This seem to work now.
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