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
echo '[extensions]' >> $HGRCPATH
echo 'hgext.mq=' >> $HGRCPATH
show_branch_cache()
{
branches=.hg/branch.cache
# force cache (re)generation
hg log -r does-not-exist 2> /dev/null
hg log -r tip --template 'tip: #rev#\n'
if [ -f $branches ]; then
sort $branches
else
echo No $branches
fi
if [ "$1" = 1 ]; then
for b in foo bar; do
hg log -r $b --template "branch $b: "'#rev#\n'
done
fi
}
hg init a
cd a
hg qinit -c
echo '# mq patch on an empty repo'
hg qnew p1
show_branch_cache
echo > pfile
hg add pfile
hg qrefresh -m 'patch 1'
show_branch_cache
echo
echo '# some regular revisions'
hg qpop
echo foo > foo
hg add foo
echo foo > .hg/branch
hg ci -m 'branch foo' -d '1000000 0'
echo bar > bar
hg add bar
echo bar > .hg/branch
hg ci -m 'branch bar' -d '1000000 0'
show_branch_cache
echo
echo '# add some mq patches'
hg qpush
show_branch_cache
hg qnew p2
echo foo > .hg/branch
echo foo2 >> foo
hg qrefresh -m 'patch 2'
show_branch_cache 1
echo
echo '# removing the cache'
rm .hg/branch.cache
show_branch_cache 1
echo
echo '# importing rev 1 (the cache now ends in one of the patches)'
hg qimport -r 1 -n p0
show_branch_cache 1
hg log -r qbase --template 'qbase: #rev#\n'
echo
echo '# detect an invalid cache'
hg qpop -a
hg qpush -a
show_branch_cache