profiling: dropping hotshot profiling. --profile as a unique profiling option
hotshot was an experimental module, which is broken for Python < 2.5
And even for Python >= 2.5 users, hotshot usage is discouraged: cProfile
(formerly lsprof) should be used instead.
#!/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