Change default SVN diffing tool

Question

Following a blog, I created a batch file, wm.bat:

\"d:\\svnroot\\external\\winmerge\\WinMerge.exe\" /B /WAIT \"d:\\svnroot\\external\\winmerge\\WinMergeU.exe         


        

Answer 1

Check out this link:

http://blog.tplus1.com/index.php/2007/08/29/how-to-use-vimdiff-as-the-subversion-diff-tool/

Here is a copy for SOer's convienience:

Get this diffwrap.sh script and save it anywhere. I saved mine in my $HOME/bin directory. Make sure to make it executable! I’m showing it below:

#!/bin/sh
# Configure your favorite diff program here.
DIFF="/usr/bin/vimdiff" 
# Subversion provides the paths we need as the sixth and seventh
# parameters.
LEFT="$6"
RIGHT="$7"
# Call the diff command (change the following line to make sense for
# your merge program).
"$DIFF" "$LEFT" "$RIGHT"

# Return an errorcode of 0 if no differences were detected, 1 if some were.
# Any other errorcode will be treated as fatal.

Then change your $HOME/.subversion/config file to point at that script:

[helpers]
diff-cmd = /home/matt/bin/diffwrap.sh

Then go diff a file!

Answer 2

Using Cygwin, Subversion (Cygwin's version) and WinDiff requires some care to deal with the latter's intolerance of forward slashes. I use the following Bash script, installed via svn's diff-cmd setting, to get the desired results with 'svn diff':

arg1=$(echo $6 | sed 's/\//\\/g' | sed 's/\\cygdrive\\c/c:/')
arg2=$(echo $7 | sed 's/\//\\/g' | sed 's/\\cygdrive\\c/c:/')
cmd /c windiff.exe $arg1 $arg2

Answer 3

Something similar to the above answers worked for me, but, my particular setup required a bit of customization. Modifications for me were needed to (1) account for the "/tmp" directory in Cygwin, and (2) ensure the "/tmp" file stayed present (hence the "start" is gone from the launch of Meld).

The below .bat file worked for me with:

• Cygwin (x64)
• SVN (command line)
• Meld
• Windows 10

--

@echo off

set left=%6
set right=%7

REM Repeat these two lines for all drives
set left=%left:/cygdrive/d/=d:/%
set right=%right:/cygdrive/d/=d:/%
set left=%left:/tmp=c:/cygwin64/tmp%
set right=%right:/tmp=c:/cygwin64/tmp%

"C:\program files (x86)\meld\Meld.exe" %left% %right%

Answer 4

After creating a batch file that contains a call to your favorite merge program, you can configure Subversion to always use your batch file in Windows (without requiring the --diff-cmd argument on each use) by modifying the line

# diff-cmd = diff_program (diff, gdiff, etc.)

in the file C:\Documents and Settings\username\Application Data\Subversion\config. This line should be changed to point to your batch file. For example:

diff-cmd = c:\bin\wm.bat

Answer 5

You need to convert the path to Windows style:

#!/bin/sh

LEFT="$6"
RIGHT="$7"

RRIGHT=`cygpath.exe -pw $RIGHT`
LLEFT=`cygpath.exe -pw $LEFT`

/cygdrive/c/Program\ Files\ \(x86\)/WinMerge/WinMergeU.exe /e /s /ub /dl %3 /dr %5 $LLEFT $RRIGHT

Answer 6

Meld works really great for me. After installing, I went to the Subversion config file, uncommented the diff-cmd line and set it to the path when meld.exe is. In my case:

[helpers]
### ...
### Set diff-cmd to the absolute path of your 'diff' program.
###   This will override the compile-time default, which is to use
###   Subversion's internal diff implementation.
diff-cmd = D:\SOFT\Meld\meld\meld.exe