tests/test-diff-subdir

patch: be more tolerant to diffstat failures (issue 865)

Sometimes, revisions cannot be represented by a regular diff, only a git diff
would capture binary files or permission changes. diffstat cannot handle git
patches and will output "0 files changed" when fed with an empty diff. We
cannot consider the latter to be an error, unless we rewrite diffstat to handle
these correctly.

#!/bin/sh

hg init

mkdir alpha
touch alpha/one
mkdir beta
touch beta/two

hg add alpha/one beta/two
hg ci -m "start" -d "1000000 0"

echo 1 > alpha/one
echo 2 > beta/two

echo EVERYTHING
hg diff --nodates

echo BETA ONLY
hg diff --nodates beta

echo INSIDE BETA
cd beta
hg diff --nodates .