Diffing only modified files in Mercurial

In Mercurial it's possible to hg status only the modified/added/removed files by doing:

hg 开发者_如何学JAVAst -m
hg st -a
hg st -r

Is it possible to obtain the same behaviour for the diff command? From the man page, it seems not.

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One option would be to use something like this:

hg status -mar --no-status | xargs hg diff

The --no-status flag insures that just the file name is sent to STDOUT.