Bug 82853 - Version selection buttons in resolve dialog don't work
Summary: Version selection buttons in resolve dialog don't work
Status: RESOLVED FIXED
Alias: None
Product: cervisia
Classification: Applications
Component: general (show other bugs)
Version: unspecified
Platform: unspecified Linux
: NOR normal
Target Milestone: ---
Assignee: Christian Loose
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2004-06-04 21:26 UTC by Christian Loose
Modified: 2004-08-17 11:10 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
Patches to resolvedlg (3.18 KB, patch)
2004-06-12 03:20 UTC, Phylroy
Details
patch to resolvedlg (5.97 KB, patch)
2004-06-12 20:50 UTC, Phylroy
Details
Cleaned up patch (7.66 KB, patch)
2004-06-12 22:37 UTC, Christian Loose
Details

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Description Christian Loose 2004-06-04 21:26:55 UTC
Version:            (using KDE KDE 3.2.3)

The version selection buttons ('A', 'B', 'A+B', 'B+A') in the resolve dialog result in a messed up merged version. 

For example pressing the 'A+B' button results in merge, where the complete source of version B is inserted into the complete source of version A at the place where the conflict was.

Version A
---------

Line 1
Line 2
Line 3a
Line 4


Version B
---------

Line 1
Line 2
Line 3b
Line 4


Merged Version
--------------

Line 1
Line 2
Line 3a
Line 1
Line 2
Line 3b
Line 4
Line 4

Expected result
---------------

Line 1
Line 2
Line 3a
Line 3b
Line 4
Comment 1 Phylroy 2004-06-10 23:11:08 UTC
This occurs with me as well. Just bumped up to KDE 3.2.2.

Comment 2 Phylroy 2004-06-12 03:20:48 UTC
Created attachment 6325 [details]
Patches to resolvedlg 

This modifies resolvedlg.cpp and resolvedlg.h to correctly handle conflict
files. It will fix the bug of having the selection buttons take the entire file
into the diff item rather than the subsection under scrutinity. It also fixed a
problem with saving. 

This is my first contribution to KDE and Open source for that matter. I hope
this is okay.
Comment 3 Phylroy 2004-06-12 20:50:02 UTC
Created attachment 6335 [details]
patch to resolvedlg
Comment 4 Phylroy 2004-06-12 20:51:33 UTC
The previous patch does not work correctly. SO I've fixed it but I have a special patch that basically removes bug fix 74903. This is because our coding standard uses comments using 7+ = charecters. Like


C===========subroutine name====================
REAL SUBROUTINE NAME


Which caused undesireable effectsin the resolve dialog.  So I have reverted back to a hard 7 or nothing  rule for the conflict markers. I've also swtiched to regular expression in teh hope that this could be solved in the future. (regexps are handy) 

Comment 5 Christian Loose 2004-06-12 22:37:08 UTC
Created attachment 6336 [details]
Cleaned up patch

Thanks a lot for the patch! I attached a cleaned-up version.

I had a different solution in mind. Your solution is more like the original
code, but it seems to work pretty good. I think we should use your patch.

The Bug 46871 is still fixed with the patch. Unfortunately, as you already
said, Bug 74903 would be back in. The question is, which is more important:

a) to handle conflicts with the markers not on a separate line like Bug 74903.
b) to support content that uses the conflict markers.

IMHO b) is more important and probably more common. It also makes the code
simpler. We should instead offer to call a 3rd party conflict editor, like we
do for the diff viewer.

Any thoughts?
Christian
Comment 6 Phylroy 2004-06-14 16:10:37 UTC
Hey Christian, 

Yep I agree the Bug 74903 is a very tricky one to catch. The only way to get it is  to ..
1. Determine which is the last conflict in the file. 
2. determine if there are no standard "=======" then blank" conflict markers in that conflict. 
3. Find the non-standard conflict markers and act accordingly. 

I personally think this is a cvs design flaw. If a user had a conflict like: 

hello
<<<<<<< test.F
there======= 
their=======
chris<<<<<<< new.F

There could be two possible scenarios generating this conflict. The only way to guarantee that this bug will not occur is to obtain from cvs the new version and the local version and do a comparision on the offset point with the original files but I think that would be a bit of a headache. So for now I'd drop 74903

This was fun working on though!
Phylroy
Comment 7 Christian Loose 2004-08-17 11:10:57 UTC
Patch committed on June 16th, so the fix will be part of KDE 3.3.