我用一个叫WinMerge的应用程序(http://winmerge.org/) 他们手册中的信息(http://manual.winmerge.org/CommandLine.html)

这是我通过.gitconfig从mergetool指令中使用的bash脚本

#!/bin/sh
# using winmerge with git
# replaces unix style null files with a newly created empty windows temp file

file1=$1
if [ "$file1" == '/dev/null' ] || [ "$file1" == '\\.\nul' ] || [ ! -e "$file1" ]
    then 
       file1="/tmp/gitnull"
       `echo "">$file1`
fi
file2=$2
if [ "$file2" == '/dev/null' ] || [ "$file2" == '\\.\nul' ] || [ ! -e "$file2" ]
    then 
       file2="/tmp/gitnull"
       `echo "">$file2`
fi
echo diff : $1 -- $2
"C:\Program files (x86)\WinMerge\WinMergeU.exe" -e -ub -dl "Base" -dr "Mine" "$file1" "$file2"

基本上，bash会在一个空文件中处理diff的结果，并在正确的位置创建一个新的临时文件。

我在WinXP上使用Portable Git(工作很好!)，需要解决分支中出现的冲突。在我检查的所有gui中，KDiff3被证明是使用起来最透明的。

但是我在这篇博文中找到了让它在Windows中工作所需的说明，这些说明与这里列出的其他方法略有不同。它基本上相当于把这些行添加到我的.gitconfig文件中:

[merge]
    tool = kdiff3

[mergetool "kdiff3"]
    path = C:/YourPathToBinaryHere/KDiff3/kdiff3.exe
    keepBackup = false
    trustExitCode = false

现在工作得很好!

为了跟进Charles Bailey的回答，这里是我使用p4merge(免费跨平台3way合并工具)的git设置;安装msys Git (Windows):

git config --global merge.tool p4merge
git config --global mergetool.p4merge.cmd 'p4merge.exe \"$BASE\" \"$LOCAL\" \"$REMOTE\" \"$MERGED\"'

或者，在Windows cmd.exe shell中，第二行变成:

git config --global mergetool.p4merge.cmd "p4merge.exe \"$BASE\" \"$LOCAL\" \"$REMOTE\" \"$MERGED\""

变化(相对于查尔斯·贝利):

added to global git config, i.e. valid for all git projects not just the current one the custom tool config value resides in "mergetool.[tool].cmd", not "merge.[tool].cmd" (silly me, spent an hour troubleshooting why git kept complaining about non-existing tool) added double quotes for all file names so that files with spaces can still be found by the merge tool (I tested this in msys Git from Powershell) note that by default Perforce will add its installation dir to PATH, thus no need to specify full path to p4merge in the command

下载:http://www.perforce.com/product/components/perforce-visual-merge-and-diff-tools。

编辑(2014年2月)

正如@Gregory Pakosz所指出的，最新的msysgit现在“本地”支持p4merge(在1.8.5.5.2 .msysgit.0上测试)。

您可以通过运行以下命令显示支持的工具列表:

git mergetool --tool-help

您应该在可用或有效列表中看到p4merge。如果没有，请更新git。

如果p4merge被列出为可用，它在你的PATH中，你只需要设置merge.tool:

git config --global merge.tool p4merge

如果它被列为有效的，则必须定义mergetool.p4merge。除了merge.tool之外的路径:

git config --global mergetool.p4merge.path c:/Users/my-login/AppData/Local/Perforce/p4merge.exe

The above is an example path when p4merge was installed for the current user, not system-wide (does not need admin rights or UAC elevation) Although ~ should expand to current user's home directory (so in theory the path should be ~/AppData/Local/Perforce/p4merge.exe), this did not work for me Even better would have been to take advantage of an environment variable (e.g. $LOCALAPPDATA/Perforce/p4merge.exe), git does not seem to be expanding environment variables for paths (if you know how to get this working, please let me know or update this answer)

设置mergetool.p4merge。cmd将不再工作，因为Git已经开始尝试支持p4merge，请参阅libexec/ Git -core/ Git -mergetool——lib。所以我们只需要为git指定mergetool路径，例如p4merge:

git config --global mergetool.p4merge.path 'C:\Program Files\Perforce\p4merge.exe'
git config --global merge.tool p4merge

那么它就会起作用。

新的git版本似乎直接支持p4merge，所以

git config --global merge.tool p4merge

如果p4merge.exe在你的路径上，这应该是你所需要的。不需要设置cmd或路径。

要设置p4merge，使用chocoley在窗口上安装merge和diff，请看这里: https://gist.github.com/CamW/88e95ea8d9f0786d746a