view tests/test-mq-qgoto @ 9725:3f522d2fa633

diff: add --inverse option

Most of the time, one can reverse a diff by swapping the revisions passed with
-r but it happens that if you use the global -R, and diff against the tip of
the current repo, you can't swap the revisions. One use-case for that is
reviewing changes from a bundle before unbundling. One could also pipe the
output of `hg diff` to a command line filter that reverses the diff, but that
would remove the benefit from color diffs. Therefore, having an option in
`hg diff` to reverse a diff is a good thing.

The option flag selection was tricky. GNU patch uses -R/--reverse but -R is
already used as a global option and --reverse would make --rev ambiguous.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH

hg init a
cd a
echo a > a
hg ci -Ama

hg qnew a.patch
echo a >> a
hg qrefresh

hg qnew b.patch
echo b > b
hg add b
hg qrefresh

hg qnew c.patch
echo c > c
hg add c
hg qrefresh

hg qgoto a.patch
hg qgoto c.patch
hg qgoto b.patch

echo
echo % Using index
hg qgoto 0
hg qgoto 2

echo
echo % No warnings when using index
hg qnew bug314159
echo d >> c
hg qrefresh
hg qnew bug141421
echo e >> c
hg qrefresh
hg qgoto 1
hg qgoto 3

echo
echo % Detect ambiguous non-index
hg qgoto 14

exit 0