Commits on Sep 1, 2015

1. Fallback in readCmapTable, instead of using error, for TrueType f… …

   …onts with unsupported cmap formats (bug 1200096)
   
   Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1200096.
   
   The problematic font has a `format 2` cmap, which we've never supported properly. Prior to PR 2606, we were able to fallback to a working state, despite not having proper support for that cmap format.
   
   Obviously the best/correct solution would be to implement actual support for more cmap formats[1]. However, I'm hoping that a simple patch will be OK for now, given that:
    - `format 2` cmaps seem to be quite rare in practice, since this has been broken for 2.5 years before anyone noticed.
    - Having a simple patch will make potential uplifts a lot easier.
   
   [1] See the specification at https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6cmap.html

   

   Snuffleupagus committed Sep 1, 2015
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