deltaparent(): don't return nullrev for a revision containing a full snapshot
this allows us to simplify manifest.readdelta and revlog.revdiff
#!/bin/sh
echo "[extensions]" >> $HGRCPATH
echo "churn=" >> $HGRCPATH
echo % create test repository
hg init repo
cd repo
echo a > a
hg ci -Am adda -u user1 -d 6:00
echo b >> a
echo b > b
hg ci -m changeba -u user2 -d 9:00 a
hg ci -Am addb -u user2 -d 9:30
echo c >> a
echo c >> b
echo c > c
hg ci -m changeca -u user3 -d 12:00 a
hg ci -m changecb -u user3 -d 12:15 b
hg ci -Am addc -u user3 -d 12:30
mkdir -p d/e
echo abc > d/e/f1.txt
hg ci -Am "add d/e/f1.txt" -u user1 -d 12:45 d/e/f1.txt
mkdir -p d/g
echo def > d/g/f2.txt
hg ci -Am "add d/g/f2.txt" -u user1 -d 13:00 d/g/f2.txt
echo % churn separate directories
cd d
hg churn e
echo % churn all
hg churn
echo % churn excluding one dir
hg churn -X e
echo % churn up to rev 2
hg churn -r :2
cd ..
echo % churn with aliases
cat > ../aliases <<EOF
user1 alias1
user3 alias3
EOF
hg churn --aliases ../aliases
echo % churn with .hgchurn
mv ../aliases .hgchurn
hg churn
rm .hgchurn
echo % churn with column specifier
COLUMNS=40 hg churn
echo % churn by hour
hg churn -f '%H' -s
echo % churn with separated added/removed lines
hg rm d/g/f2.txt
hg ci -Am "removed d/g/f2.txt" -u user1 -d 14:00 d/g/f2.txt
hg churn --diffstat
echo % churn --diffstat with color
hg --config extensions.color= churn --config color.mode=ansi \
--diffstat --color=always
echo % changeset number churn
hg churn -c
echo 'with space = no-space' >> ../aliases
echo a >> a
hg commit -m a -u 'with space' -d 15:00
echo % churn with space in alias
hg churn --aliases ../aliases -r tip
cd ..
# issue 833: ZeroDivisionError
hg init issue-833
cd issue-833
touch foo
hg ci -Am foo
# this was failing with a ZeroDivisionError
hg churn
cd ..