Get visual diff of two revisions of a file
diff, mercurial
Solution
If by 'visual' you mean a text comparison you can do:
hg diff -r 3 -r 12
If you want a GUI tools you can easily configure and use the ExtDiff extension, which comes with Mercurial, and use:
hg yourdiff -r 3 -r 12
where `yourdiff` was configured in your `hgrc` file.
Problem
I'd like to know the best/easiest way to get a visual diff of a file given two revisions in Mercurial. I.e., I'd like to visualize the difference between revision 3 and revision 12, etc.