bdiff: normalize the diff (issue1295)
When the common part of a diff can be moved forward, move it forward.
Otherwise we don't get deterministic results (it would depends on the way we
split for the recursion).
That way we get identical hunks when doing the same change, it helps to solve
issue1295 (inconsistent diffs on different side during a merge).
#!/bin/sh
echo "[extensions]" >> $HGRCPATH
echo "hgext.convert = " >> $HGRCPATH
echo "[convert]" >> $HGRCPATH
echo "hg.tagsbranch=0" >> $HGRCPATH
hg init source
cd source
echo a > a
hg ci -qAm adda
# Add a merge with one parent in the same branch
echo a >> a
hg ci -qAm changea
hg up -qC 0
hg branch branch0
echo b > b
hg ci -qAm addb
hg up -qC
hg merge default
hg ci -qm mergeab
hg tag -ql mergeab
cd ..
# Miss perl... sometimes
cat > filter.py <<EOF
import sys, re
r = re.compile(r'^(?:\d+|pulling from)')
sys.stdout.writelines([l for l in sys.stdin if r.search(l)])
EOF
echo % convert
hg convert -v --config convert.hg.clonebranches=1 source dest |
python filter.py
# Add a merge with both parents and child in different branches
cd source
hg branch branch1
echo a > file1
hg ci -qAm c1
hg up -qC mergeab
hg branch branch2
echo a > file2
hg ci -qAm c2
hg merge branch1
hg branch branch3
hg ci -qAm c3
cd ..
echo % incremental conversion
hg convert -v --config convert.hg.clonebranches=1 source dest |
python filter.py