Re: [PATCH 8/8] hook-list.h: add a generated list of hooks, like config-list.h

2 messages, 2 authors, 2021-09-24 · open the first message on its own page

Re: [PATCH 8/8] hook-list.h: add a generated list of hooks, like config-list.h

From: Junio C Hamano <hidden>
Date: 2021-09-24 15:51:21

Phillip Wood [off-list ref] writes:
quoted
+sed -n -e '/^~~~~*$/ {x; s/^.*$/	"&",/; p;}; x' \
POSIX does not support using a semicolon after a closing brace [1],
...
[1] "Editing commands other that {...}, a, b, c, i, r, t, w, : and #
can be followed by a <semicolon>" from 
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sed.html
Would sed implementation of BSD ancestry fail reliably to be a good
coalmine canary?

Re: [PATCH 8/8] hook-list.h: add a generated list of hooks, like config-list.h

From: René Scharfe <hidden>
Date: 2021-09-24 16:39:36

Am 24.09.21 um 17:51 schrieb Junio C Hamano:
Phillip Wood [off-list ref] writes:
quoted
quoted
+sed -n -e '/^~~~~*$/ {x; s/^.*$/	"&",/; p;}; x' \
POSIX does not support using a semicolon after a closing brace [1],
...
[1] "Editing commands other that {...}, a, b, c, i, r, t, w, : and #
can be followed by a <semicolon>" from
https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sed.html
Would sed implementation of BSD ancestry fail reliably to be a good
coalmine canary?
I doubt it.  https://man.openbsd.org/sed says:

   "Multiple commands may be specified separated by newlines or
    semicolons"

   "The a, c, i, r, and w functions cannot be followed by another
    command separated with a semicolon."

   "Following the b, t, or : commands with a semicolon and another
    command is an extension to the specification."

   "The use of newlines to separate multiple commands on the command
    line is non-portable"

https://www.freebsd.org/cgi/man.cgi?query=sed doesn't mention semicolons
at all.

On macOS 11.6 (FreeBSD-based userland) the semicolon is accepted:

   $ echo a | sed -n -e '{p;}; p'
   a
   a

René
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