Reverted changesets 9d1380e5c8c5 and 1d46169ec197: show @ as glog parent again.
Repainted the bikeshed with its original color.
#!/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