tree 9b4a8cad57fdf322b6743b343368b226aacf7529
parent 293e443529d0621b9f94ea15d1425104394f6b9e
author Behdad Esfahbod <behdad@behdad.org> 1515156372 +0000
committer Behdad Esfahbod <behdad@behdad.org> 1515156499 +0000

Improve CGJ skipping logic

Previously we made CGJ unskippable.  Now, if CGJ did NOT prevent
any reordering, allow skipping over it.  To make this work we
had to make changes to the Arabic mark reordering algorithm
implementation to renumber moved MCM marks.  See comments.

Fixes https://github.com/harfbuzz/harfbuzz/issues/554