tests/test-mq-eol

prepush: add more precise error messages

Part of the patch is from [e-mail]

- indicate the branch name where there are multiple heads
- give better advice when hitting a possible race, where new heads are added
  between discovery and the call to branchmap(). In that case, asking the user
  to merge isn't helpful, since only remote has the changes.

#!/bin/sh

# Test interactions between mq and patch.eol

echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH
echo "[diff]" >> $HGRCPATH
echo "nodates=1" >> $HGRCPATH

cat > makepatch.py <<EOF
f = file('eol.diff', 'wb')
w = f.write
w('test message\n')
w('diff --git a/a b/a\n')
w('--- a/a\n')
w('+++ b/a\n')
w('@@ -1,5 +1,5 @@\n')
w(' a\n')
w('-b\r\n')
w('+y\r\n')
w(' c\r\n')
w(' d\n')
w('-e\n')
w('\ No newline at end of file\n')
w('+z\r\n')
w('\ No newline at end of file\r\n')
EOF

cat > cateol.py <<EOF
import sys
for line in file(sys.argv[1], 'rb'):
    line = line.replace('\r', '<CR>')
    line = line.replace('\n', '<LF>')
    print line
EOF

hg init repo
cd repo
echo '\.diff' > .hgignore
echo '\.rej' >> .hgignore

# Test different --eol values
python -c 'file("a", "wb").write("a\nb\nc\nd\ne")'
hg ci -Am adda
python ../makepatch.py
hg qimport eol.diff
echo % should fail in strict mode
hg qpush
hg qpop
echo % invalid eol
hg --config patch.eol='LFCR' qpush
hg qpop
echo % force LF
hg --config patch.eol='CRLF' qpush
hg qrefresh
python ../cateol.py .hg/patches/eol.diff
python ../cateol.py a
hg qpop
echo % push again forcing LF and compare revisions
hg --config patch.eol='CRLF' qpush
python ../cateol.py a
hg qpop
echo % push again without LF and compare revisions
hg qpush
python ../cateol.py a
hg qpop