Extend the grep tests to assert that setting "grep.patternType=extended" followed by "grep.patternType=default" will behave as if "--basic-regexp" was provided, and not as "--extended-regexp". In a subsequent commit we'll need to treat "grep.patternType=default" as a special-case, but let's make sure we ignore it if it's being set to "default" following an earlier non-"default" "grep.patternType" setting. Let's also test what happens when we have a sequence of "extended" followed by "default" and "fixed". In that case the "fixed" should prevail, as well as tests to check that a "grep.extendedRegexp=true" followed by a "grep.extendedRegexp=false" behaves as though "grep.extendedRegexp" wasn't provided. See [1] for the source of some of these tests, and their initial (pseudocode) implementation, and [2] for a later discussion about a breakage due to missing testing (which had been noted in [1] all along). 1. https://lore.kernel.org/git/xmqqv8zf6j86.fsf@gitster.g/ 2. https://lore.kernel.org/git/xmqqpmoczwtu.fsf@gitster.g/ Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx> --- t/t7810-grep.sh | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh index 6f1103b54b9..69356011713 100755 --- a/t/t7810-grep.sh +++ b/t/t7810-grep.sh @@ -461,6 +461,58 @@ do -c grep.extendedRegexp=true \ -c grep.patternType=basic + # grep.extendedRegexp is last-one-wins + test_pattern_type "$H" "$HC" "$L" BRE \ + -c grep.extendedRegexp=true \ + -c grep.extendedRegexp=false + + # grep.patternType=basic pays no attention to grep.extendedRegexp + test_pattern_type "$H" "$HC" "$L" BRE \ + -c grep.extendedRegexp=true \ + -c grep.patternType=basic \ + -c grep.extendedRegexp=false + + # grep.patternType=extended pays no attention to grep.extendedRegexp + test_pattern_type "$H" "$HC" "$L" ERE \ + -c grep.extendedRegexp=true \ + -c grep.patternType=extended \ + -c grep.extendedRegexp=false + + # grep.extendedRegexp is used with a last-one-wins grep.patternType=default + test_pattern_type "$H" "$HC" "$L" ERE \ + -c grep.patternType=fixed \ + -c grep.extendedRegexp=true \ + -c grep.patternType=default + + # grep.extendedRegexp is used with earlier grep.patternType=default + test_pattern_type "$H" "$HC" "$L" ERE \ + -c grep.extendedRegexp=false \ + -c grep.patternType=default \ + -c grep.extendedRegexp=true + + # grep.extendedRegexp is used with a last-one-loses grep.patternType=default + test_pattern_type "$H" "$HC" "$L" ERE \ + -c grep.extendedRegexp=false \ + -c grep.extendedRegexp=true \ + -c grep.patternType=default + + # grep.extendedRegexp and grep.patternType are both last-one-wins independently + test_pattern_type "$H" "$HC" "$L" BRE \ + -c grep.patternType=default \ + -c grep.extendedRegexp=true \ + -c grep.patternType=basic + + # grep.patternType=extended and grep.patternType=default + test_pattern_type "$H" "$HC" "$L" BRE \ + -c grep.patternType=extended \ + -c grep.patternType=default + + # grep.patternType=[extended -> default -> fixed] (BRE)" ' + test_pattern_type "$H" "$HC" "$L" FIX \ + -c grep.patternType=extended \ + -c grep.patternType=default \ + -c grep.patternType=fixed + test_expect_success "grep --count $L" ' echo ${HC}ab:3 >expected && git grep --count -e b $H -- ab >actual && -- 2.35.1.1028.g9479bb34b83
