Bug 209391

Summary: cursoring behaviour with composed GSUB characters
Product: [Fedora] Fedora Reporter: Lawrence Lim <llim>
Component: icuAssignee: Caolan McNamara <caolanm>
Status: CLOSED CURRENTRELEASE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: eng-i18n-bugs, rreddy, tools-bugs
Target Milestone: ---Keywords: i18n
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: 5.0.0 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-01-22 10:02:27 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: 209969    
Attachments:
Description Flags
test case for oriya locale none

Description Lawrence Lim 2006-10-05 01:19:15 UTC 
Description of problem:
Noticed something interesting on the cursoring, it works ok for GPOS characters
but not GSUB characters like those found in the attached Test Cases.

Version-Release number of selected component (if applicable):
openoffice.org-core-2.0.4-4.2

How reproducible:
Always

Steps to Reproduce:
1.loaded the Test Case with firefox
2.copy and paste one of the char into oowriter (in my case TC #61)
3.press left arrow key (<-)
  
Actual results:
Cursor still on the right of the character

Expected results:
Should move to the left of the character

Additional info:
Interestingly, after Step 3, try Ctrl-V, the characters will get "mashed"
together. Similar behaviour was not observed in gedit.
Comment 1 Lawrence Lim 2006-10-05 01:21:38 UTC 
Created attachment 137790 [details]
test case for oriya locale
Comment 3 Caolan McNamara 2006-10-05 07:52:06 UTC 
The last time there was something like this it was a grapheme clustering table
issue, icu/writer is probably still considering the single "character" to be
comprised of separate bits which can be cursored into.
Comment 4 Caolan McNamara 2006-10-05 11:56:45 UTC 
Well, this is tricky, but I've added code to icu 3.6-6 which seems to "do the
right thing" for oriya and malayam with respect to such pango-like cursoring
through "foo virama foo" constructs.

Some testing outside the specialized virama using tests of these examples for
normal oriya/malayam text would be "a good thing"(tm)
Comment 6 Caolan McNamara 2006-11-07 17:53:20 UTC 
*** Bug 213465 has been marked as a duplicate of this bug. ***
Comment 7 Caolan McNamara 2006-11-07 17:59:06 UTC 
Strange, I could have *sworn* there was more comments than this in this bug
along the line of "I'm confident it works, but it's not a very elegent solution,
albeit the same as that of pango" and that it was set to modified, and even
maybe verified, closed...

anyway for RHEL-5 we have 3.6-5.5, and all looks well for me there for test case
41 and for other foo virama foo constructs for cursoring through them