GNU logs - #17830, boring messages

Message sent to monnier@HIDDEN, bug-gnu-emacs@HIDDEN:

Subject: bug#17830: 24.4.50; smie: inners and up-list
Resent-From: Leo Liu <sdl.web@HIDDEN>
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To: 17830 <at> debbugs.gnu.org
Cc: Stefan Monnier <monnier@HIDDEN>
From: Leo Liu <sdl.web@HIDDEN>
Date: Sun, 22 Jun 2014 11:28:25 +0800
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I quite like the support for show-paren-mode in smie of 24.4 for
closers. But I often also want to be able to jump to the beginning of
the block with backward-up-list by key C-M-u.

However, if the block has inners such as `let ... in ... end' (sml-mode)
and point is between `in' and `end', backward-up-list always misses the
`let' opener. Some smie grammars take the `... in ...' out of the block
which makes backward-up-list work but show-paren-mode won't show `in' as
the inner matching `let' any more.

Any fix to this? Thanks.

Leo

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Leo Liu <sdl.web@HIDDEN>
Subject: bug#17830: Acknowledgement (24.4.50; smie: inners and up-list)
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Date: Sun, 22 Jun 2014 03:30:06 +0000

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17830: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D17830
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Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#17830: 24.4.50; smie: inners and up-list
Resent-From: Stefan Monnier <monnier@HIDDEN>
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To: Leo Liu <sdl.web@HIDDEN>
Cc: 17830 <at> debbugs.gnu.org
From: Stefan Monnier <monnier@HIDDEN>
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References: <m3lhspwrl2.fsf@HIDDEN>
Date: Sun, 22 Jun 2014 08:43:05 -0400
In-Reply-To: <m3lhspwrl2.fsf@HIDDEN> (Leo Liu's message of "Sun, 22 Jun
 2014 11:28:25 +0800")
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> I quite like the support for show-paren-mode in smie of 24.4 for
> closers. But I often also want to be able to jump to the beginning of
> the block with backward-up-list by key C-M-u.

> However, if the block has inners such as `let ... in ... end' (sml-mode)
> and point is between `in' and `end', backward-up-list always misses the
> `let' opener. Some smie grammars take the `... in ...' out of the block
> which makes backward-up-list work but show-paren-mode won't show `in' as
> the inner matching `let' any more.

> Any fix to this? Thanks.

The use of forward-sexp-function in up-list is indeed problematic,
although it does work 90% of the time.

We probably need to introduce an up-list-function hook.  `transpose-sexp'
similarly fails in to do the right thing in some cases (tho for
transpose-sexp, the problem is not so much in the "jump over a sexp"
part as in the way it decides what to leave unchanged around point).


        Stefan

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severity 17830 minor
quit

Last modified: Wed, 29 Jun 2022 15:15:02 UTC

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