GNU logs - #45114, boring messages


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$ emacs file.pl # and start typing
if(/^[^}]/) ...

During the process you will get spurious warnings about mismatched
parentheses etc.

emacs-version "27.1"




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To: =?UTF-8?Q?=E7=A9=8D=E4=B8=B9=E5=B0=BC?= Dan Jacobson <jidanni@HIDDEN>
Subject: bug#45114: Acknowledgement (perl-mode warns about mismatched
 parentheses wrongly)
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45114: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D45114
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On December 8, 2020 7:45:03 AM GMT+02:00, "=E7=A9=8D=E4=B8=B9=E5=B0=BC Dan =
Jacobson" <jidanni@jidanni=2Eorg> wrote:
> $ emacs file=2Epl # and start typing
> if(/^[^}]/) =2E=2E=2E
>=20
> During the process you will get spurious warnings about mismatched
> parentheses etc=2E
>=20
> emacs-version "27=2E1"

This is a well documented feature=2E  If you don't like it, turn off blink=
-matching-paren=2E




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On December 8, 2020 7:45:03 AM GMT+02:00, "=E7=A9=8D=E4=B8=B9=E5=B0=BC Dan =
Jacobson" <jidanni@jidanni=2Eorg> wrote:
> $ emacs file=2Epl # and start typing
> if(/^[^}]/) =2E=2E=2E
>=20
> During the process you will get spurious warnings about mismatched
> parentheses etc=2E
>=20
> emacs-version "27=2E1"

This is a well documented feature=2E  If you don't like it, turn off blink=
-matching-paren=2E




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>>>>> "EZ" == Eli Zaretskii <eliz@HIDDEN> writes:

EZ> This is a well documented feature.  If you don't like it, turn off blink-matching-paren.

But that would ruin it outside of regular expressions too.




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On December 8, 2020 8:38:25 AM GMT+02:00, "=E7=A9=8D=E4=B8=B9=E5=B0=BC Dan =
Jacobson" <jidanni@jidanni=2Eorg> wrote:
> >>>>> "EZ" =3D=3D Eli Zaretskii <eliz@gnu=2Eorg> writes:
>=20
> EZ> This is a well documented feature=2E  If you don't like it, turn off
> blink-matching-paren=2E
>=20
> But that would ruin it outside of regular expressions too=2E

I see nothing special about regular expressions in this context=2E  Parens=
 matching is useful there as well as anywhere else=2E




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>>>>> "EZ" == Eli Zaretskii <eliz@HIDDEN> writes:
EZ> I see nothing special about regular expressions in this context.  Parens matching is useful there as well as anywhere else.

/[

means we are entering characters that stand on their own, that _should
not be thought to match_ previous characters.

As I am entering the regexp, emacs should not tell me that

/[}

is wrong.




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On December 8, 2020 9:09:51 AM GMT+02:00, "=E7=A9=8D=E4=B8=B9=E5=B0=BC Dan =
Jacobson" <jidanni@jidanni=2Eorg> wrote:
> >>>>> "EZ" =3D=3D Eli Zaretskii <eliz@gnu=2Eorg> writes:
> EZ> I see nothing special about regular expressions in this context=2E=
=20
> Parens matching is useful there as well as anywhere else=2E
>=20
> /[
>=20
> means we are entering characters that stand on their own, that _should
> not be thought to match_ previous characters=2E
>=20
> As I am entering the regexp, emacs should not tell me that
>=20
> /[}
>=20
> is wrong=2E

I disagree=2E




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=E7=A9=8D=E4=B8=B9=E5=B0=BC Dan Jacobson <jidanni@HIDDEN> writes:

> $ emacs file.pl # and start typing
> if(/^[^}]/) ...
>
> During the process you will get spurious warnings about mismatched
> parentheses etc.
>
> emacs-version "27.1"

This is a general Emacs-ism: The warning appears in any mode, not just
in Perl mode.  So, in any environment of Perl mode: in code, but also in
strings, comments, and POD - and in character classes of a regex.
Whenever you type [}, the warning will appear (also in Gnus' message
mode, as I just experienced).

The current message texts "Mismatched parentheses" and "No matching
parenthesis found" _look_ pretty much like error messages from a
compiler, or from a syntax-aware programming mode. They always make me
wince.

I suggest to change the message texts to clarify that no effort was
taken to find out whether the mismatch is significant, like this:

   Note: no matching paren shown

Would that be acceptable?

I guess this bug can be merged with Bug#24299?
--=20
Cheers,
haj




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forcemerge 24299 45114
thanks

haj@HIDDEN (Harald J=C3=B6rg) writes:

> I guess this bug can be merged with Bug#24299?

Yes, done.




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Subject: Re: bug#45114: perl-mode warns about mismatched parentheses wrongly
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forcemerge 24299 45114
thanks

haj@HIDDEN (Harald J=C3=B6rg) writes:

> I guess this bug can be merged with Bug#24299?

Yes, done.





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