Bug 145431

Summary: [bn_IN] backspace changes independent indic characters
Product: Red Hat Enterprise Linux 4 Reporter: Jatin Nansi <jnansi>
Component: pangoAssignee: Behdad Esfahbod <behdad>
Status: CLOSED NOTABUG QA Contact: desktop-bugs <desktop-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: eng-i18n-bugs, petersen, runab, smohan
Target Milestone: ---Keywords: i18n
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-07-07 09:07:37 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 126002, 220805    
Attachments:
Description Flags
screenshot of gedit none

Description Jatin Nansi 2005-01-18 13:03:15 UTC 
Description of problem:
when backspace key is hit after a consonant with a dot at the bottom,
the dot vanishes and the result is an independent and unrelated
alphabet. The dot in this case is not a vowel sign, it is a part of
the consonant itself. 
The 1st example is of Bengali Yaa - <09DF>. A backspace changes it to
a bengali Ya - <09AF>.
See attached image for example. The image uses the bengali probhat
keyboard layout.


Version-Release number of selected component (if applicable):
1.6.0-7


How reproducible:
Every time


Steps to Reproduce:
1. Start gedit in bengali locale
2. Ctrl+space, F6
3. press 'z' then bkspace
  
Actual results:
The 'dot' below the yaa character gets deleted, and it becomes a ya.


Expected results:
The complete yaa character should get deleted.


Additional info:
Tested on RHEL4-RC-0107.0 WS
Comment 1 Jatin Nansi 2005-01-18 13:04:31 UTC 
Created attachment 109923 [details]
screenshot of gedit
Comment 2 Leon Ho 2005-05-16 05:01:17 UTC 
Are there any plan this this entry?
Comment 3 Matthias Clasen 2006-06-20 05:12:17 UTC 
Reassigning pango bugs to Behdad.
Comment 4 Liang Zhang 2006-07-20 09:43:22 UTC 
I debug this bug and I find that this bug is not the bug of Pango, but the bug
of gtk. 
gtk_entry_backspace( ) and gtk_text_buffer_backspace( ) need be modified.
I will write a patch for this bug.
I filed a new bug of gtk in Gnome bugzilla.
http://bugzilla.gnome.org/show_bug.cgi?id=348107
Comment 5 Liang Zhang 2006-07-21 03:05:37 UTC 
I wrote a patch for this bug.
The patch is below:
http://bugzilla.gnome.org/show_bug.cgi?id=348107
Comment 6 Satyabrata Maitra 2006-12-20 12:03:33 UTC 
Problem still exists in RHEL5 Beta. 

Component Version tested :
pango-1.14.9-3.el5.

Package available in the tree :
http://porkchop.redhat.com/nightly/RHEL5-Client-20061218.nightly/tree-i386/Client/

tested this bug with EL4 also. there tested it with the Component Version :
pango-1.6.0-9.2. Bug is also exists there in EL4.

If any rpm or test RPM available to test the patch mentioned in comment #5, pls
attach it, so that i can test the work done fixing this problem.
Comment 7 Behdad Esfahbod 2006-12-20 18:29:54 UTC 
LingNing, any update here?
Comment 8 Liang Zhang 2006-12-31 02:40:18 UTC 
I wrote a patch for fixing this bug and bug217017, bug220805. And this patch
fixed all problems about backspace-delete and cursor moving of all split matras
of all indic scripts.
The patch is:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=217017
Comment 9 Jens Petersen 2008-05-01 00:38:50 UTC 
Rahul, can you review the status of this?
Comment 10 Rahul Bhalerao 2008-05-01 09:41:54 UTC 
This behavior is due to the Normalization. And as seen on the comments on
upstream bugs, backspace on NFD, is actually an expected behavior. So since this
is what Unicode expects, I am not sure if this should be treated as a bug.