Bug 133044

Summary:	Undo (CTRL-Z) creates some extra characters when undo a composed character
Product:	[Fedora] Fedora	Reporter:	Lawrence Lim <llim>
Component:	gtk2	Assignee:	Matthias Clasen <mclasen>
Status:	CLOSED RAWHIDE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	eng-i18n-bugs, otaylor, tools-bugs
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:	2004-10-22 04:18:27 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:

Description Lawrence Lim 2004-09-21 04:49:26 UTC

Description of problem:
After removing a composed character which makes up 3 characters, to
undo the event, user will need to type CTRL-Z 3 times. In addition,
indivaidual charcters that made up the composed characters were
returned as well. Hence, instaed of returning one single character, 3
characters are returned.

Version-Release number of selected component (if applicable):
gtk2-2.4.9-8

How reproducible:
Always

Steps to Reproduce:
1. Use gedit application to open the UTF-8.txt supplied
2. Remove one korean character which can be found near the end of file
3. Ctrl-Z to undo action
  
Actual results:
Compose character toegther with the elements that made up the
character are returned.

Expected results:
One single compose character is returned

Additional info:

Comment 1 Leon Ho 2004-09-21 12:04:33 UTC

Here is the test case:
- wget
http://www.openi18n.org/subgroups/testsuites/1.3/interactive/text-editor-tests/UTF-8.txt
- open UTF-8.txt in gedit
- Go to end of hangul extended line
- delete part of the character.
- press ctrl-z

Comment 2 Owen Taylor 2004-09-21 14:55:26 UTC

I think there are multiple things going on here - without touching
the delete key at all I can get bizarre behavior with gedit.

Open up a new window, with a Korean input method, enter a syllable
and commit it. The first press of C-z deletes the character ... looks
good. But repeatedly typing C-z after that results in junk being
inserted into the buffer.

THis is probably some combination of GtkTextView bugs and
GtkSourceView bugs ... undo is implemented as a layer on *top* of
GtkTextView.

Comment 3 Leon Ho 2004-10-22 04:18:27 UTC

Fixed in rawhide