annotate tests/test-grep @ 1146:9061f79c6c6f

grep: extend functionality, add man page entry, add unit test.
walkchangerevs now returns a two-tuple.  Its behaviour is also
extensively commented.
The annotate command's getname function has been factored out to a new
function, trimname, so it can be shared between annotate and grep.
The behaviour of grep has been beefed up, so that it now performs a
number of useful functions.

#!/bin/sh

mkdir t
cd t
hg init
echo import > port
hg add port
hg commit -m 0 -u spam -d '0 0'
echo export >> port
hg commit -m 1 -u eggs -d '1 0'
echo export > port
echo vaportight >> port
echo 'import/export' >> port
hg commit -m 2 -u spam -d '2 0'
echo 'import/export' >> port
hg commit -m 3 -u eggs -d '3 0'
head -3 port > port1
mv port1 port
hg commit -m 4 -u spam -d '4 0'
hg grep port port
hg grep -enu port port
hg grep import port