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From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Johannes Sixt <j6t@kdbg.org>, Dan Jacques <dnj@google.com>,
	git@vger.kernel.org, Johannes.Schindelin@gmx.de
Subject: Re: [PATCH v4 1/4] Makefile: generate Perl header from template file
Date: Sun, 03 Dec 2017 10:26:05 +0100	[thread overview]
Message-ID: <87a7z0upqq.fsf@evledraar.booking.com> (raw)
In-Reply-To: <xmqqr2scjsb4.fsf@gitster.mtv.corp.google.com>


On Sun, Dec 03 2017, Junio C. Hamano jotted:

> Johannes Sixt <j6t@kdbg.org> writes:
>
>>> +	sed -e 's=@@PATHSEP@@=$(pathsep)=g' \
>>
>> This doesn't work, unfortunately. When $(pathsep) is ';', we get an
>> incomplete sed expression because ';' is also a command separator in
>> the sed language.
>
> It is correct that ';' can be and does get used in place of LF when
> writing a script on a single line, but even then, as part of a
> string argument to 's' command (and also others), there is no need
> to quote ';' or otherwise treat it any specially, as the commands
> know what their syntax is (e.g. 's=string=replacement=' after seeing
> the first '=' knows that it needs to find one unquoted '=' to find
> the end of the first argument, and another to find the end of the
> replacement string, and ';' seen during that scanning would not have
> any special meaning).
>
> If your sed is so broken and does not satisfy the above expectation,
> t6023 would not work for you, I would gess.
>
> t/t6023-merge-file.sh:sed -e "s/deerit.\$/deerit;/" -e "s/me;\$/me./" < new5.txt > new6.txt
> t/t6023-merge-file.sh:sed -e "s/deerit.\$/deerit,/" -e "s/me;\$/me,/" < new5.txt > new7.txt
> t/t6023-merge-file.sh:sed -e 's/deerit./&%%%%/' -e "s/locavit,/locavit;/"< new6.txt | tr '%' '\012' > new8.txt

Since this whole thing is guarded by "ifndef NO_PERL" Dan could just be
using "perl -pe" here instead of fiddling around with the portability
edge cases of sed, e.g.:

    perl -pe 's[foo][bar[g' <in >out

  reply	other threads:[~2017-12-03  9:36 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-29 15:56 [PATCH v4 0/4] RUNTIME_PREFIX relocatable Git Dan Jacques
2017-11-29 15:56 ` [PATCH v4 1/4] Makefile: generate Perl header from template file Dan Jacques
2017-12-01 16:59   ` Johannes Sixt
2017-12-01 17:13     ` Johannes Schindelin
2017-12-01 17:25       ` Johannes Sixt
2017-12-01 18:18         ` Dan Jacques
2017-12-01 18:52           ` Andreas Schwab
2017-12-05 20:54         ` Johannes Sixt
2017-12-05 21:17           ` Junio C Hamano
2017-12-05 21:26           ` Dan Jacques
2017-12-05 21:35             ` Junio C Hamano
2017-12-06 18:25               ` Johannes Sixt
2017-12-06 18:47                 ` Junio C Hamano
2017-12-06 18:56                   ` Daniel Jacques
2017-12-06 19:01                     ` Ævar Arnfjörð Bjarmason
2017-12-08 21:15                       ` Ævar Arnfjörð Bjarmason
2018-04-23 23:23                 ` [PATCH dj/runtime-prefix 0/2] Handle $IFS in $INSTLIBDIR Jonathan Nieder
2018-04-23 23:24                   ` [PATCH 1/2] Makefile: remove unused @@PERLLIBDIR@@ substitution variable Jonathan Nieder
2018-04-24  2:11                     ` Junio C Hamano
2018-04-23 23:25                   ` [PATCH 2/2] Makefile: quote $INSTLIBDIR when passing it to sed Jonathan Nieder
2018-04-24  0:53                     ` Junio C Hamano
2018-04-24  2:18                       ` [PATCH 2/2 v2] " Jonathan Nieder
2018-04-24  2:56                         ` Daniel Jacques
2017-12-03  5:26     ` [PATCH v4 1/4] Makefile: generate Perl header from template file Junio C Hamano
2017-12-03  9:26       ` Ævar Arnfjörð Bjarmason [this message]
2017-11-29 15:56 ` [PATCH v4 2/4] Makefile: add support for "perllibdir" Dan Jacques
2017-11-29 20:04   ` Ævar Arnfjörð Bjarmason
2017-11-29 15:56 ` [PATCH v4 3/4] Makefile: add Perl runtime prefix support Dan Jacques
2017-11-29 21:00   ` Ævar Arnfjörð Bjarmason
2017-12-02 15:47     ` [PATCH v4 3/4] RUNTIME_PREFIX relocatable Git Dan Jacques
2017-11-29 21:04   ` [PATCH v4 3/4] Makefile: add Perl runtime prefix support Ævar Arnfjörð Bjarmason
2017-11-29 15:56 ` [PATCH v4 4/4] exec_cmd: RUNTIME_PREFIX on some POSIX systems Dan Jacques
2017-11-29 21:12 ` [PATCH v4 0/4] RUNTIME_PREFIX relocatable Git Ævar Arnfjörð Bjarmason
2017-11-29 22:38   ` Dan Jacques

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