> In the message hook, just grep if the template was already added.  If it 
quoted text
> was, just return.  If it was not, add it.

Ah, so you want me to always type ":q!" to exit and unnecessarily 
complicate the commit-msg hook.  Cunning, but no, thanks.

I'll make an example.  This is my prepare-commit-msg hook:

diff_collect_changelog ()
{
   git diff "$@" -- \
    `git diff "$@" --name-status -r | \
         awk '/ChangeLog/ { print substr ($0, 3) }'` | sed -n \
     -e '/^@@/,/^+/ {' \
     -e '  s/^ //p' \
     -e '  t' \
     -e '}' \
     -e '/^diff/,/^@@/ {' \
     -e '  s/^diff --git a\/\(.*\)\/ChangeLog[^ ]* b\/.*/\1:/p' \
     -e '  tdummy' \
     -e '  :dummy' \
     -e '  d' \
     -e '}' \
     -e 's/^+//p' \
     -e 't'
}

diff_collect_changelog --cached > /tmp/foo$$
cat "$GIT_COMMIT_MSG" >> /tmp/foo$$ && \
   mv /tmp/foo$$ "$GIT_COMMIT_MSG"
rm -f /tmp/foo$$

or something like that.  The alternative I see would be to start the vi 
editing session with "!!make_changelog --cached".  So I thought about 
having an hook that runs the command for me.  Do you have better ideas?

Paolo
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