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How to use ExtDiff extension of Mercurial

📅 2014-Apr-11 ⬩ ✍️ Ashwin Nanjappa ⬩ 🏷️ diff, extdiff, extension, meld, mercurial ⬩ 📚 Archive

Mercurial is very convenient to use at the commandline. However, there are certain operations that are better with the GUI. For example, I prefer to use a GUI to go through the diff of uncommitted changes. The ExtDiff extension can be used to launch a GUI Diff tool to view the diff of a single file or across the entire repository.

[extensions]
hgext.extdiff =
$ hg extdiff -p meld src/bar/foo.cpp
$ hg extdiff -p meld

Make sure that the GUI diff program you use has the ability to show the diff of multiple files in a directory hierarchy.

[extdiff]
cmd.vdiff = meld

After this, you can view the diff using the vdiff command:

$ hg vdiff src/bar/foo.cpp
$ hg vdiff

Tried with: Mercurial 2.8.2 and Ubuntu 12.04