How to show the diff specific to a named branch in mercurial

Question

Assuming I have a named branch foo with two commits a, b:

      a       b       c  
------o-------o-------o------- # default
       \\          d         e
              


        

Answer 1

Another way to do this, useful also for branches that you have already merged to default is:

hg diff -r "max(ancestors(foo) and branch(default)):foo"

Though that can be a pit of a pain, so i'd recommend setting up an alias by adding something like:

[alias]
branchdiff = diff -r "max(ancestors('$1') and branch(default)):'$1'"

To your Mercurial.INI/hgrc which you can then use like this:

hg branchdiff 

or

hg branchdiff .