git-commit-vandalism/t/t4209-log-pickaxe.sh
Ævar Arnfjörð Bjarmason 52e011cd2b pickaxe -S: support content with NULs under --pickaxe-regex
Fix a bug in the matching routine powering -S<rx> --pickaxe-regex so
that we won't abort early on content that has NULs in it.

We've had a hard requirement on REG_STARTEND since 2f8952250a (regex:
add regexec_buf() that can work on a non NUL-terminated string,
2016-09-21), but this sanity check dates back to d01d8c6782 (Support
for pickaxe matching regular expressions, 2006-03-29).

It wasn't needed anymore, and as the now-passing test shows, actively
getting in our way. Since we always require REG_STARTEND support we do
not need to stop at NULs. If we are dealing with a haystack with NUL
in it. The needle may be behind that NUL.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-05-11 12:47:31 +09:00

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#!/bin/sh
test_description='log --grep/--author/--regexp-ignore-case/-S/-G'
. ./test-lib.sh
test_log () {
expect=$1
kind=$2
needle=$3
shift 3
rest=$@
case $kind in
--*)
opt=$kind=$needle
;;
*)
opt=$kind$needle
;;
esac
case $expect in
expect_nomatch)
match=nomatch
;;
*)
match=match
;;
esac
test_expect_success "log $kind${rest:+ $rest} ($match)" "
git log $rest $opt --format=%H >actual &&
test_cmp $expect actual
"
}
# test -i and --regexp-ignore-case and expect both to behave the same way
test_log_icase () {
test_log $@ --regexp-ignore-case
test_log $@ -i
}
test_expect_success setup '
>expect_nomatch &&
>file &&
git add file &&
test_tick &&
git commit -m initial &&
git rev-parse --verify HEAD >expect_initial &&
echo Picked >file &&
git add file &&
test_tick &&
git commit --author="Another Person <another@example.com>" -m second &&
git rev-parse --verify HEAD >expect_second
'
test_expect_success 'usage' '
test_expect_code 129 git log -S 2>err &&
test_i18ngrep "switch.*requires a value" err &&
test_expect_code 129 git log -G 2>err &&
test_i18ngrep "switch.*requires a value" err &&
test_expect_code 128 git log -Gregex -Sstring 2>err &&
grep "mutually exclusive" err &&
test_expect_code 128 git log -Gregex --find-object=HEAD 2>err &&
grep "mutually exclusive" err &&
test_expect_code 128 git log -Sstring --find-object=HEAD 2>err &&
grep "mutually exclusive" err &&
test_expect_code 128 git log --pickaxe-all --find-object=HEAD 2>err &&
grep "mutually exclusive" err
'
test_expect_success 'usage: --pickaxe-regex' '
test_expect_code 128 git log -Gregex --pickaxe-regex 2>err &&
grep "mutually exclusive" err
'
test_expect_success 'usage: --no-pickaxe-regex' '
cat >expect <<-\EOF &&
fatal: unrecognized argument: --no-pickaxe-regex
EOF
test_expect_code 128 git log -Sstring --no-pickaxe-regex 2>actual &&
test_cmp expect actual &&
test_expect_code 128 git log -Gstring --no-pickaxe-regex 2>err &&
test_cmp expect actual
'
test_log expect_initial --grep initial
test_log expect_nomatch --grep InItial
test_log_icase expect_initial --grep InItial
test_log_icase expect_nomatch --grep initail
test_log expect_second --author Person
test_log expect_nomatch --author person
test_log_icase expect_second --author person
test_log_icase expect_nomatch --author spreon
test_log expect_nomatch -G picked
test_log expect_second -G Picked
test_log_icase expect_nomatch -G pickle
test_log_icase expect_second -G picked
test_expect_success 'log -G --textconv (missing textconv tool)' '
echo "* diff=test" >.gitattributes &&
test_must_fail git -c diff.test.textconv=missing log -Gfoo &&
rm .gitattributes
'
test_expect_success 'log -G --no-textconv (missing textconv tool)' '
echo "* diff=test" >.gitattributes &&
git -c diff.test.textconv=missing log -Gfoo --no-textconv >actual &&
test_cmp expect_nomatch actual &&
rm .gitattributes
'
test_log expect_nomatch -S picked
test_log expect_second -S Picked
test_log_icase expect_second -S picked
test_log_icase expect_nomatch -S pickle
test_log expect_nomatch -S p.cked --pickaxe-regex
test_log expect_second -S P.cked --pickaxe-regex
test_log_icase expect_second -S p.cked --pickaxe-regex
test_log_icase expect_nomatch -S p.ckle --pickaxe-regex
test_expect_success 'log -S --textconv (missing textconv tool)' '
echo "* diff=test" >.gitattributes &&
test_must_fail git -c diff.test.textconv=missing log -Sfoo &&
rm .gitattributes
'
test_expect_success 'log -S --no-textconv (missing textconv tool)' '
echo "* diff=test" >.gitattributes &&
git -c diff.test.textconv=missing log -Sfoo --no-textconv >actual &&
test_cmp expect_nomatch actual &&
rm .gitattributes
'
test_expect_success 'setup log -[GS] plain & regex' '
test_create_repo GS-plain &&
test_commit -C GS-plain --append A data.txt "a" &&
test_commit -C GS-plain --append B data.txt "a a" &&
test_commit -C GS-plain --append C data.txt "b" &&
test_commit -C GS-plain --append D data.txt "[b]" &&
test_commit -C GS-plain E data.txt "" &&
# We also include E, the deletion commit
git -C GS-plain log --grep="[ABE]" >A-to-B-then-E-log &&
git -C GS-plain log --grep="[CDE]" >C-to-D-then-E-log &&
git -C GS-plain log --grep="[DE]" >D-then-E-log &&
git -C GS-plain log >full-log
'
test_expect_success 'log -G trims diff new/old [-+]' '
git -C GS-plain log -G"[+-]a" >log &&
test_must_be_empty log &&
git -C GS-plain log -G"^a" >log &&
test_cmp log A-to-B-then-E-log
'
test_expect_success 'log -S<pat> is not a regex, but -S<pat> --pickaxe-regex is' '
git -C GS-plain log -S"a" >log &&
test_cmp log A-to-B-then-E-log &&
git -C GS-plain log -S"[a]" >log &&
test_must_be_empty log &&
git -C GS-plain log -S"[a]" --pickaxe-regex >log &&
test_cmp log A-to-B-then-E-log &&
git -C GS-plain log -S"[b]" >log &&
test_cmp log D-then-E-log &&
git -C GS-plain log -S"[b]" --pickaxe-regex >log &&
test_cmp log C-to-D-then-E-log
'
test_expect_success 'setup log -[GS] binary & --text' '
test_create_repo GS-bin-txt &&
test_commit -C GS-bin-txt --printf A data.bin "a\na\0a\n" &&
test_commit -C GS-bin-txt --append --printf B data.bin "a\na\0a\n" &&
test_commit -C GS-bin-txt C data.bin "" &&
git -C GS-bin-txt log >full-log
'
test_expect_success 'log -G ignores binary files' '
git -C GS-bin-txt log -Ga >log &&
test_must_be_empty log
'
test_expect_success 'log -G looks into binary files with -a' '
git -C GS-bin-txt log -a -Ga >log &&
test_cmp log full-log
'
test_expect_success 'log -G looks into binary files with textconv filter' '
test_when_finished "rm GS-bin-txt/.gitattributes" &&
(
cd GS-bin-txt &&
echo "* diff=bin" >.gitattributes &&
git -c diff.bin.textconv=cat log -Ga >../log
) &&
test_cmp log full-log
'
test_expect_success 'log -S looks into binary files' '
git -C GS-bin-txt log -Sa >log &&
test_cmp log full-log
'
test_expect_success 'log -S --pickaxe-regex looks into binary files' '
git -C GS-bin-txt log --pickaxe-regex -Sa >log &&
test_cmp log full-log &&
git -C GS-bin-txt log --pickaxe-regex -S"[a]" >log &&
test_cmp log full-log
'
test_done