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
hg init a
cd a
echo a > a
hg ci -Ama -d '1 0'
hg cp a b
hg ci -mb -d '2 0'
mkdir dir
hg mv b dir
hg ci -mc -d '3 0'
hg mv a b
echo a > d
hg add d
hg ci -md -d '4 0'
hg mv dir/b e
hg ci -me -d '5 0'
hg log a
echo % -f, directory
hg log -f dir
echo % -f, but no args
hg log -f
echo % one rename
hg log -vf a
echo % many renames
hg log -vf e
echo % log copies
hg log -vC --template '{rev} {file_copies%filecopy}\n'
echo % log copies, non-linear manifest
hg up -C 3
hg mv dir/b e
echo foo > foo
hg ci -Ame2 -d '6 0'
hg log -vC --template '{rev} {file_copies%filecopy}\n' -r 5
echo '% log -p d'
hg log -pv d
# log --follow tests
hg init ../follow
cd ../follow
echo base > base
hg ci -Ambase -d '1 0'
echo r1 >> base
hg ci -Amr1 -d '1 0'
echo r2 >> base
hg ci -Amr2 -d '1 0'
hg up -C 1
echo b1 > b1
hg ci -Amb1 -d '1 0'
echo % log -f
hg log -f
hg up -C 0
echo b2 > b2
hg ci -Amb2 -d '1 0'
echo % log -f -r 1:tip
hg log -f -r 1:tip
hg up -C 3
hg merge tip
hg ci -mm12 -d '1 0'
echo postm >> b1
hg ci -Amb1.1 -d'1 0'
echo % log --follow-first
hg log --follow-first
echo % log -P 2
hg log -P 2
echo '% log -r ""'
hg log -r ''
exit 0