Bug 1344401

Summary: Tamil language fonts not displaying correctly in gnome-terminal
Product: [Fedora] Fedora Reporter: Buvanesh Kumar <linuxsbk>
Component: gnome-terminalAssignee: Matthias Clasen <mclasen>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 26CC: debarshir, linuxsbk, mclasen, mfabian, psatpute
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Hardware: x86_64   
OS: Linux   
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Last Closed: 2017-05-26 05:08:38 UTC Type: Bug
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Tamil font rendering incorrectly none

Description Buvanesh Kumar 2016-06-09 15:05:07 UTC 
Created attachment 1166348 [details]
Tamil font rendering incorrectly

Description of problem:
I am using fedora 22 system. I am unable to view the Tamil fonts correctly. It's in unstructured format. But it shows very well in konsole terminal.  


Version-Release number of selected component (if applicable): 

How reproducible:
 It happens to me every time when I follow the below steps

Steps to Reproduce:
1. Here is the guide on how to type in Tamil
  http://welinux.blogspot.in/2016/06/type-tamil-in-fedora-22-all-most-in-all.html
2. Select Tamil keyboard from input method
3. Open gnome-terminal
4. For example write any text inside a text file
  # vim foo.txt
   வணக்கம்
5. View it in terminal
  # cat foo.txt
//It will show Tamil fonts incorrectly


Actual results:
Shows Tamil fonts incorrectly.

Expected results: 
It should show Tamil fonts properly. 


Additional info: This problem is not only in Fedora 22 systems. It occurs on all Fedora, CentOS and Red Hat distributions. The above method works well on Konsole. Konsole show Tamil fonts properly. So the problem might be in gnome-terminal.
Comment 1 Matthias Clasen 2016-06-20 16:43:15 UTC 
See https://bugzilla.gnome.org/show_bug.cgi?id=584160 for some history of CTL in gnome-terminal. It is not an easy problem, and I don't expect fast progress.
Comment 2 Pravin Satpute 2016-10-19 06:28:48 UTC 
Right, surprising. Now Konsole has also started supporting complex script rendering.

I think problem for this fix is not technology, but should actually gnome-terminal support complex script.

We are advancing in technology, so i feel in long term we must support complex script in Gnome as well.
Comment 3 Fedora End Of Life 2016-11-25 09:15:50 UTC 
This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
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Comment 4 Buvanesh Kumar 2017-05-23 09:57:01 UTC 
We have crossed 4 versions (Fedora 23,24,25 and 26). 
Still, the issue is not resolved :(.
Comment 5 Pravin Satpute 2017-05-26 05:08:38 UTC 
This is not about Fedora 23. 

This is known issue from last 10 years and already decided that if anyone wants to use Indian or any language required complex script features use Emacs instead.

COE college students done project to resolve this and few patches are available. please read more about it at http://foss.coep.org.in/fosslab/Indian-Language-support-in-gnome-terminal.pdf but its not as per design of VTE.