view tests/test-diffdir @ 4884:931f901ab811

merge: fix unnecessary rename merges on linear update (issue631)

If one side's revision is identical to the ancestor, we skip the rest
of the copy detection logic.

#!/bin/sh

hg init
touch a
hg add a
hg ci -m "a" -d "1000000 0"

echo 123 > b
hg add b
hg diff --nodates

hg diff --nodates -r tip

echo foo > a
hg diff --nodates

hg diff -r ""
hg diff -r tip -r ""

true