(oops, sent the original from the wrong email address so it probably
didn't go through to the mailing list)
On 2/8/15 12:32, Jonathan Kew wrote:
Hey Behdad,
In https://bugzilla.mozilla.org/show_bug.cgi?id=729993, we'd like to
switch Gecko to use HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS, so as
to enable independent mark coloring. However, it turns out this breaks
other aspects of rendering behavior; in particular, we get test
failures in a couple of tests using variation selectors.
Looking at the code, I believe this is because _hb_ot_shape_normalize
relies on the .cluster field to identify the ranges within which it
operates. We'll need to fix this to use unicode properties instead, or
something like that.
Similarly, we get a failure in a test for fallback mark positioning,
because _hb_ot_shape_fallback_position also relies on .cluster.
For these operations, we need to work on a consistent "cluster"
regardless of the setting of the HB_BUFFER_CLUSTER_LEVEL option.
JK
Just following up on this, see
https://hg.mozilla.org/try/rev/b01499276dc2 for a patch I tried that
fixes the test failures in Firefox.
JK
_______________________________________________
HarfBuzz mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/harfbuzz
