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Open up the Git Bash command line window, and your in your $HOME directory. You can also check the three way merge by going to the merge tab and loading three text files. Before we start, check your installation by launching the tool from the Window's Start menu, pick two text files at random, and open the editor. #P4MERGE DIFFTOOL INSTALL#You have to check you do not want to install any of the components other the the visual merge tool, in order to get the free copy of the editor. ![]() You want to download the Helix P4: Visual Merge Tool, and the installation script will ask you what components you want to install. I go through a selection process with my criteria for selecting a good file comparison tool in my article: '.' Since I'm now using P4Merge, let's go through setting it up to be used with Git. ![]() When I went to edit a file with multiple problems, I went nuts trying to work with their bars running down the screen, which leaves P4Merge. I started using Diffmerge in Git at first, its a nice tool, but it has bars along the side showing changes, not lines going across. I've looked at every tool in the above list, and some others, and only two tools stand out above the rest: SourceGear's Diffmerge, and Perforce's P4Merge. Which tool should I use? How do I configure it to run when you type 'git difftool' or 'git mergetool' in git? There are several valid Git merge tools listed in the Git documentation: kdiff3, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff, ecmerge, diffuse, tortoisemerge, opendiff, P4merge and Araxis. ![]() The editor will then launch with the correct files ready for editing. There is one caveat, in order to run 'git difftool' or 'git mergetool' you have to first run 'git diff' or 'git merge' and have a difference or conflict. #P4MERGE DIFFTOOL FULL#Git has two commands that will launch the diff/merge editor full screen from the command line, 'git difftool' and 'git mergetool.' Which ever file comparison editor you use, it needs to be configured in Git so the 'git difftool' and 'git mergetool' command will bring up the editor with the correct files loaded. The diff/merge is typically done in an editor specifically designed to show files side by side with changes highlighted. Its difficult to rectify any conflicts from the command line, besides a Window GUI is nicer for this type of conflict resolution. The problem with both diff and merge is sometimes there are multiple differences in the files, and changes can be extensive. These conflicts arise when you try to merge two branches together with a 'git merge,' or a recent 'git pull' from another repository may produce a merge conflict. To test this out change a file that you already have committed and then run 'git diff.' When more than one developer is working on a project a three way difference may occur between the two developers working on a file, and the previously committed version of a file. It will look at the same files in each place and show you the differences in the files. 'git diff' shows the difference between what's in your working directory, what your currently working on, and what's in your index staged to be committed next, or is already committed. Invariably when working on files, you'll edit a file, and wonder how it differs from what you've previously committed, or staged to commit with a 'git add.' You can discover these differences with the 'git diff' command. Opendiff is still in its command-line utilities which are standalone. You cannot install FileMerge as a standalone program. If you don't have opendiff installed you could install it together with the Developer Tools from XCode: UPDATE: In recent versions of XCode, FileMerge is now bundled with XCode. You could instruct Git to use it automatically for git-mergetool with: git config -global merge.tool opendiff If you want it for git-difftool as well: git config -global diff.tool opendiff And you could also disable the prompting for every file with: git config -global difftool.prompt false For more details type: git help config and search with / for the different options. It is a command line tool which opens the GUI of. In its 'Pro Version', it also supports merging. #P4MERGE DIFFTOOL PDF#Like Araxis Merge and DeltaWalker, it goes beyond (pun intended) comparing simple text and also allows diffing Word and PDF contents. Originally a product for Microsoft Windows, the Beyond Compare team has contributed a fine diff tool to the Mac platform. Versions >= 2017.3 requires admin rights to install on windows. #P4MERGE DIFFTOOL CODE#One of the most annoying thing about Visual Studio 2013's built in diff tool is that it has no way (that I know if anyway) to ignore white spaces in code diffs. A friend of mine, Rizal Al-Mashoor introduced me to a tool named P4Merge by Perforce. Menu Using Perforce P4Merge As Diff Tool For Git 10 January 2015. #P4MERGE DIFFTOOL FOR MAC#
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