view tests/test-execute-bit @ 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

"$TESTDIR/hghave" execbit || exit 80

hg init
echo a > a
hg ci -Am'not executable'

chmod +x a
hg ci -m'executable'
hg id

echo '% make sure we notice the change of mode if the cached size == -1'
hg rm a
hg revert -r 0 a
hg debugstate
hg st

hg up 0
hg id
test -x a && echo executable -- eek || echo not executable -- whew