How do I customize the 'commit message file' generated by `hg commit`?

Question

When I run hg commit, Mercurial generates a file for my commit message that looks like this :

HG: Enter commit message.  Lines beginning with \'         


        

Answer 1

A Mac/Linux variant of Jim Eggleston's answer... I made a script called hg-commit-editor:

#!/bin/sh
hg status --unknown | sed -e 's|^|HG: |' >> $1
editor $1

and then set it as my commit editor in my hgrc:

[ui]
editor = hg-commit-editor