The attached patch adds Arabic coma, semicolon, full stop (used in Urdu) and question mark to font-ext.lua for protrusion. Now, combined with glyph expansion, I don't get any overfull boxes.
Regards, Khaked -- Khaled Hosny Arabic localiser and member of Arabeyes.org team Free font developer
--- font-ext.lua 2009-03-03 11:48:35.000000000 +0200
+++ /home/khaled/font-ext.lua 2009-04-06 08:33:26.000000000 +0200
@@ -134,6 +134,9 @@
[0x2014] = { 0, 0.33 }, -- emdash
[0x3001] = { 0, 1 }, -- ideographic comma 、
[0x3002] = { 0, 1 }, -- ideographic full stop 。
+ [0x060C] = { 0, 1 }, -- arabic comma ،
+ [0x061B] = { 0, 1 }, -- arabic semicolon ؛
+ [0x06D4] = { 0, 1 }, -- arabic full stop ۔
}
@@ -154,6 +157,10 @@
[0x002D] = { 0, 0.70 }, -- hyphen
[0x2013] = { 0, 0.30 }, -- endash
[0x2014] = { 0, 0.20 }, -- emdash
+ [0x060C] = { 0, 0.70 }, -- arabic comma
+ [0x061B] = { 0, 0.50 }, -- arabic semicolon
+ [0x06D4] = { 0, 0.70 }, -- arabic full stop
+ [0x061F] = { 0, 0.20 }, -- ؟
-- todo: left and right quotes: .5 double, .7 single
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