hgweb: don't raise an exception when displying empty repos
The nullid node claims it's in the default branch, but the branch dict
is empty. This fixes the main symptom from issue696, but we may want
to set branchtags()['default'] = nullid somewhere for empty repos.
#!/bin/sh
hg init a
cd a
echo a > a
hg ci -Ama -d '1 0'
hg cp a b
hg ci -mb -d '2 0'
mkdir dir
hg mv b dir
hg ci -mc -d '3 0'
hg mv a b
echo a > d
hg add d
hg ci -md -d '4 0'
hg mv dir/b e
hg ci -me -d '5 0'
hg log a
echo % -f, directory
hg log -f dir
echo % -f, but no args
hg log -f
echo % one rename
hg log -vf a
echo % many renames
hg log -vf e
echo % log copies
hg log -vC --template '{rev} {file_copies%filecopy}\n'
echo % log copies, non-linear manifest
hg up -C 3
hg mv dir/b e
echo foo > foo
hg ci -Ame2 -d '6 0'
hg log -vC --template '{rev} {file_copies%filecopy}\n' -r 5
echo '% log -p d'
hg log -pv d
# log --follow tests
hg init ../follow
cd ../follow
echo base > base
hg ci -Ambase -d '1 0'
echo r1 >> base
hg ci -Amr1 -d '1 0'
echo r2 >> base
hg ci -Amr2 -d '1 0'
hg up -C 1
echo b1 > b1
hg ci -Amb1 -d '1 0'
echo % log -f
hg log -f
hg up -C 0
echo b2 > b2
hg ci -Amb2 -d '1 0'
echo % log -f -r 1:tip
hg log -f -r 1:tip
hg up -C 3
hg merge tip
echo % log -r . with two parents
hg log -r .
hg ci -mm12 -d '1 0'
echo % log -r . with one parent
hg log -r .
echo postm >> b1
hg ci -Amb1.1 -d'1 0'
echo % log --follow-first
hg log --follow-first
echo % log -P 2
hg log -P 2
echo '% log -r ""'
hg log -r ''
exit 0