[PATCH v4 11/19] grep: make grep.patternType=[pcre|pcre1] a synonym for "perl"
- From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
- Date
- Apr 25, 2017, 21:05 UTC
- Message-ID
- <20170425210548.24612-12-avarab@gmail.com>
- In-Reply-To
- <20170425210548.24612-1-avarab@gmail.com>
Make the pattern types "pcre" & "pcre1" synonyms for the long-standing "perl" grep.patternType.
This change is part of a longer patch series to add pcre2 support to Git. It's nice to be able to performance test PCRE v1 v.s. v2 without having to recompile git, and doing that via grep.patternType makes sense.
However, just adding "pcre2" when we only have "perl" would be confusing, so start by adding a "pcre" & "pcre1" synonym.
In the future "perl" and "pcre" might be changed to default to "pcre2" instead of "pcre1", and depending on how Git is compiled the more specific "pcre1" or "pcre2" pattern types might produce an error.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> --- Documentation/config.txt | 9 +++++++++ grep.c | 4 +++- t/t7810-grep.sh | 10 ++++++++++ t/t7814-grep-recurse-submodules.sh | 4 ++++ 4 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt index 475e874d51..5ef12d0694 100644 --- a/Documentation/config.txt +++ b/Documentation/config.txt @@ -1624,6 +1624,15 @@ grep.patternType:: 'fixed', or 'perl' will enable the `--basic-regexp`, `--extended-regexp`, `--fixed-strings`, or `--perl-regexp` option accordingly, while the value 'default' will return to the default matching behavior. ++ +The 'pcre' and 'pcre1' values are synonyms for 'perl'. The other +values starting with 'pcre' are reserved for future use, e.g. if we'd +like to use 'pcre2' for the PCRE v2 library. ++ +In the future 'perl' and 'pcre' might become synonyms for some other +implementation or PCRE version, such as 'pcre2', while the more +specific 'pcre1' & 'pcre2' might throw errors depending on whether git +is compiled to include those libraries. grep.extendedRegexp:: If set to true, enable `--extended-regexp` option by default. This diff --git a/grep.c b/grep.c index 6995f0989a..62c3749d9f 100644 --- a/grep.c +++ b/grep.c @@ -60,7 +60,9 @@ static int parse_pattern_type_arg(const char *opt, const char *arg) return GREP_PATTERN_TYPE_ERE; else if (!strcmp(arg, "fixed")) return GREP_PATTERN_TYPE_FIXED; - else if (!strcmp(arg, "perl")) + else if (!strcmp(arg, "perl") || + !strcmp(arg, "pcre") || + !strcmp(arg, "pcre1")) return GREP_PATTERN_TYPE_PCRE; die("bad %s argument: %s", opt, arg); } diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh index ec8fe585a7..7199356d35 100755 --- a/t/t7810-grep.sh +++ b/t/t7810-grep.sh @@ -1512,4 +1512,14 @@ test_expect_success 'grep does not report i-t-a and assume unchanged with -L' ' test_cmp expected actual ' +test_expect_success LIBPCRE "grep with grep.patternType synonyms perl/pcre/pcre1" ' + echo "#include <stdio.h>" >expected && + git -c grep.patternType=perl grep -h --no-line-number "st(?=dio)" >actual && + test_cmp expected actual && + git -c grep.patternType=pcre grep -h --no-line-number "st(?=dio)" >actual && + test_cmp expected actual && + git -c grep.patternType=pcre1 grep -h --no-line-number "st(?=dio)" >actual && + test_cmp expected actual +' + test_done diff --git a/t/t7814-grep-recurse-submodules.sh b/t/t7814-grep-recurse-submodules.sh index e1822feaf1..325fde53ef 100755 --- a/t/t7814-grep-recurse-submodules.sh +++ b/t/t7814-grep-recurse-submodules.sh @@ -358,6 +358,10 @@ test_expect_success 'grep --recurse-submodules should pass the pattern type alon EOF test_cmp expect actual && git -c grep.patternType=perl grep --recurse-submodules -e "(.|.)[\d]" >actual && + test_cmp expect actual && + git -c grep.patternType=pcre grep --recurse-submodules -e "(.|.)[\d]" >actual && + test_cmp expect actual && + git -c grep.patternType=pcre1 grep --recurse-submodules -e "(.|.)[\d]" >actual && test_cmp expect actual fi '
-- 2.11.0