hg status: added options to select files by status. Added options -m, -a, -r and u to select files corresponding to status M, A, R and ? respectively. If none of these options are specified, files of all status will be shown.

#!/bin/sh

hg init
echo This is file a1 > a
hg add a
hg commit -m "commit #0" -d "0 0"
touch b
hg add b
rm b
hg commit -A -m"comment #1" -d "0 0"