1153482 - The "Hamza-initial" letter arabic It does not appear correctly

Status: RESOLVED INVALID

(Core :: Graphics: Text, defect)

Description

[blinky]

The "Hamza-initial" letter arabic appears in isolated in the testcase https://dl.dropboxusercontent.com/u/95157096/85f61cf7/azmnx3ei9m.html.

Comment 1

[blinky]

Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=aa5e3b445810&tochange=ec10630b1a54

Triggered by:
550038369ab1	Jonathan Kew — bug 789687 - update harfbuzz to upstream commit fecdfa95daf4916695f23e7dab89ab363be11b89. r=jdaggett

Comment 2

[Jonathan Kew [:jfkthame]]

When loading that testcase, I see a bunch of font errors reported in the Web Console:

downloadable font: Layout: glyph range is overlapping.in range 10 (font-family: "BoutrosAsmaRegular" style:normal weight:normal stretch:normal src index:0) source: https://dl.dropboxusercontent.com/u/95157096/85f61cf7/wiojnygw52.woff azmnx3ei9m.html:5:12
downloadable font: GDEF: Invalid glyph classes, table discarded (font-family: "BoutrosAsmaRegular" style:normal weight:normal stretch:normal src index:0) source: https://dl.dropboxusercontent.com/u/95157096/85f61cf7/wiojnygw52.woff azmnx3ei9m.html:5:12
downloadable font: Layout: Bad lookup flags 9 (font-family: "BoutrosAsmaRegular" style:normal weight:normal stretch:normal src index:0) source: https://dl.dropboxusercontent.com/u/95157096/85f61cf7/wiojnygw52.woff azmnx3ei9m.html:5:12
downloadable font: Layout: Failed to parse lookup 1 (font-family: "BoutrosAsmaRegular" style:normal weight:normal stretch:normal src index:0) source: https://dl.dropboxusercontent.com/u/95157096/85f61cf7/wiojnygw52.woff azmnx3ei9m.html:5:12
downloadable font: GPOS: Failed to parse lookup list table, table discarded (font-family: "BoutrosAsmaRegular" style:normal weight:normal stretch:normal src index:0) source: https://dl.dropboxusercontent.com/u/95157096/85f61cf7/wiojnygw52.woff azmnx3ei9m.html:5:12
downloadable font: Layout: Failed to parse lookup 4 (font-family: "BoutrosAsmaRegular" style:normal weight:normal stretch:normal src index:0) source: https://dl.dropboxusercontent.com/u/95157096/85f61cf7/wiojnygw52.woff azmnx3ei9m.html:5:12
downloadable font: GSUB: Failed to parse lookup list table, table discarded (font-family: "BoutrosAsmaRegular" style:normal weight:normal stretch:normal src index:0) source: https://dl.dropboxusercontent.com/u/95157096/85f61cf7/wiojnygw52.woff azmnx3ei9m.html:5:12

(Open the console, then click Shift-Reload to force the font to be reloaded rather than used from cache.)

Given that it looks like there are errors in the OpenType tables, it's not surprising the font doesn't shape correctly.

(And fwiw, it doesn't shape correctly in Chrome either.)