381967 - Indic languages are not rendering when set sans-serif as defualt font starts rendering only some languages

Status: RESOLVED FIXED

(Core :: Graphics, defect)

Description

[Parag Nemade]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a4) Gecko/20070522 Minefield/3.0a4
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a4) Gecko/20070522 Minefield/3.0a4

Successfully reproduced when firefox installed
from granparadiso-alpha4-source.tar.bz2 and
from nightly builds.

When tried to open http://mr.wikipedia.org or http://www.esakal.com got only Glyphs boxes(no actual characters). Then I set Edit->pref default font to sans-serif. There was no previous default font entry there. 
What I saw that when I refresh same http://mr.wikipedia.org it failed to show but then I tried to open other Indic page http://hi.wikipedia.org, I saw its displaying correctly. Then I opened again http://mr.wikipedia.org and its also showed me all characters.

But still some Indic languages are rendering only and some not
Languages I found working fine after font set to sans-serif
Assamese
Bengali
Gujarati
Punjabi
Hindi
Marathi
Tamil
Malayalam

Languages I NOT found working even after font set to sans-serif
Kannada
Oriya
Telugu

I have all Lohit family fonts for all Indic Langs installed on my RHEL5 as well as Fedora core 6 system



Reproducible: Always

Steps to Reproduce:
1. Start Fedora Core 6 or RHEL5 linux OS
2.  Download either nightly build and install it or build firefox from latest stable alpha4 source code and start firefox from its dist/bin directory without installing built binary.
3. open any Indic webpage say http://mr.wikipedia.org or http://www.esakal.com 
4. See how it renders Glyphs
Actual Results:  
No Indic languages are displayed in browser even after having localized fonts installed on system.


Expected Results:  
Set font to sans-serif and see that some Indic langs starts rendering in wikipedia but some not.


Check also before setting default font as sans-serif 
http://www.google.co.in/
Then set font to sans-serif and see that actual Glyphs starts appearing there.

Comment 1

[Parag Nemade]

For more information on this bug, I created one test case
1) go to /home/parag/.mozilla/firefox/u4b1zh38.default and empty font field I set to sans-serif.
user_pref("font.name.serif.x-western", "sans-serif");
to
user_pref("font.name.serif.x-western", "");
2) Start ./firefox
3) go to Edit->pref to crosscheck whether font is still sans-seirf or empty. Found Empty.
4) open http://mr.wikipedia.org. Dunno but it worked fine.
5) open http://www.esakal.com, Failed to display characters.
6) Go to Edit->pref, set font to sans-serif and hey page automatically refreshed and started showing Indic Marathi Characters.
7) Quit firefox.

 I am attaching now debugging messages I got from console.

Comment 2

[Parag Nemade]

Attachment: Extra messages to understand problem

Comment 3

[Karl Tomlinson (:karlt)]

Is this still a problem?

Comment 4

[Parag Nemade]

I don't think this is now a problem. Looks to me this got fixed already as part of bug 362682 and patch https://bugzilla.mozilla.org/attachment.cgi?id=284221

Comment 5

[Parag Nemade]

Okay. so It looks to me that actually patch submitted and ckecked in from bug 378105 fixed this bug.