GNU logs - #74065, boring messages

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Subject: bug#74065: documentation suggestion for caret
Resent-From: Greg Minshall <minshall@HIDDEN>
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Date: Mon, 28 Oct 2024 09:13:34 -0700
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in the info node
----
5.3 Overview of basic regular expression syntax
----

in the discussion of caret (^), there is this (totally correct, afaik)
text:
----
     =E2=80=98^=E2=80=99 acts as a special character only at the beginning =
of the
     regular expression or subexpression (that is, after =E2=80=98\(=E2=80=
=99 or =E2=80=98\|=E2=80=99).
     Portable scripts should avoid =E2=80=98^=E2=80=99 at the beginning of a
     subexpression, though, as POSIX allows implementations that treat
     =E2=80=98^=E2=80=99 as an ordinary character in that context.
----

on the other hand, POSIX *EREs* allow caret in a subexpression.  this
isn't mentioned in the info node about EREs (which, as that node treats
GNU sed EREs, probably needn't be).  would it be worth mentioning it
here?
----
     =E2=80=98^=E2=80=99 acts as a special character only at the beginning =
of the
     regular expression or subexpression (that is, after =E2=80=98\(=E2=80=
=99 or =E2=80=98\|=E2=80=99).
     Portable scripts should avoid =E2=80=98^=E2=80=99 at the beginning of a
     subexpression, though, as POSIX allows implementations that treat
     =E2=80=98^=E2=80=99 as an ordinary character in that context.  (Note t=
hat POSIX
     *extended* regular expressions, as well as those of GNU sed, do
     allow '^' at the beginning of a subexpression.)
----

cheers.

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Greg Minshall <minshall@HIDDEN>
Subject: bug#74065: Acknowledgement (documentation suggestion for caret)
Message-ID: <handler.74065.B.173013206531144.ack <at> debbugs.gnu.org>
References: <730625.1730132014@archlinux>
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Date: Mon, 28 Oct 2024 16:15:02 +0000

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