According to the font documentation: "Khmer Busra dot This font does something that a Unicode font should not do and that is it does not show the ‘correct’ symbol for one particular Unicode codepoint. It shows a dotted circle in the place where a ក should be shown. It may be used for didactic purposes. This is to circumvent a particular limitation of the Microsoft Unicode implementation that does not permit some Khmer symbols to stand on their own together with another character. This font is not suited for displaying any Khmer text." So it's not broken but doesn't infirm the patch ;-) Olivier <div class="gmail_extra"> <div class="gmail_quote">2012/11/21 Mathieu Pellerin <<a href="mailto:nirvn.asia@gmail.com" target="_blank">nirvn.asia@gmail.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Jonathan, Behdad, Just spent the last twenty minutes testing out the proposed patch applied to Jonathan's test builds over here (<a href="http://ftp.mozilla.org/pub/mozilla.org/firefox/try-builds/jkew@mozilla.com-4bdec69a038e/" target="_blank">http://ftp.mozilla.org/pub/mozilla.org/firefox/try-builds/jkew@mozilla.com-4bdec69a038e/</a>). The results are good: - Kh-Battambang works (which was the font that revealed this mess) - Hanuman works again - Looking at Jonathan's test page, things are looking very good. I can only see one broken font, that is Mo5V56do.ttf (which is also broken on pango anyways, isn't used online as well as barely so in real world, and suspect it might be a font problem) I've also made a bunch of pango vs harfbuzz (patched) screenshots while visiting the top-10 Khmer language web sites. After closely inspecting the shots, all things are rendering properly under the patched harfbuzz. The rendering is not only regression-free, I've actually spotted two places where we are improving from pango's misplacements! Seems like this patch has hit the mythical pot of gold at the end of the rainbow ;) Mathieu _______________________________________________ HarfBuzz mailing list <a href="mailto:HarfBuzz@lists.freedesktop.org">HarfBuzz@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/harfbuzz" target="_blank">http://lists.freedesktop.org/mailman/listinfo/harfbuzz</a> </blockquote></div> </div>