tests/test-filebranch

util._matcher: speed up regexp matching.

In 4babaa52badf, Benoit made a change that substantially slows matching
when a big .hgignore file is in play, because it calls into the regexp
matching engine potentially hundreds of times per file to be matched.

I've partly rolled back his change, so that we only call into the matcher
once per file, but preserved the ability to report a meaningful error
message if there's a syntax error in the regexp.

#!/bin/sh

# This test makes sure that we don't mark a file as merged with its ancestor
# when we do a merge.

cat <<EOF > merge
import sys, os
print "merging for", os.path.basename(sys.argv[1])
EOF
HGMERGE="python ../merge"; export HGMERGE

echo creating base
hg init a
cd a
echo 1 > foo
echo 1 > bar
echo 1 > baz
echo 1 > quux
hg add foo bar baz quux
hg commit -m "base" -d "1000000 0"

cd ..
hg clone a b

echo creating branch a
cd a
echo 2a > foo
echo 2a > bar
hg commit -m "branch a" -d "1000000 0"

echo creating branch b

cd ..
cd b
echo 2b > foo
echo 2b > baz
hg commit -m "branch b" -d "1000000 0"

echo "we shouldn't have anything but n state here"
hg debugstate | cut -b 1-16,35-

echo merging
hg pull ../a
hg merge -v

echo 2m > foo
echo 2b > baz
echo new > quux

echo "we shouldn't have anything but foo in merge state here"
hg debugstate | cut -b 1-16,35- | grep "^m"

hg ci -m "merge" -d "1000000 0"

echo "main: we should have a merge here"
hg debugindex .hg/store/00changelog.i

echo "log should show foo and quux changed"
hg log -v -r tip

echo "foo: we should have a merge here"
hg debugindex .hg/store/data/foo.i

echo "bar: we shouldn't have a merge here"
hg debugindex .hg/store/data/bar.i

echo "baz: we shouldn't have a merge here"
hg debugindex .hg/store/data/baz.i

echo "quux: we shouldn't have a merge here"
hg debugindex .hg/store/data/quux.i

echo "manifest entries should match tips of all files"
hg manifest --debug

echo "everything should be clean now"
hg status

hg verify