GNU bug report logs - #23177
Inserting $ with delete-selection-mode set

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Roger Lipsett <roger.lipsett <at> gmail.com>
To: bug-auctex <at> gnu.org
Subject: Inserting $ with delete-selection-mode set
Date: Thu, 31 Mar 2016 17:37:36 -0400

[Message part 1 (text/plain, inline)]

tex.el, at line 6315, contains the code

  ;; delsel.el, `delete-selection-mode'
  (put 'TeX-newline 'delete-selection t)
  (put 'TeX-insert-quote 'delete-selection t)
  (put 'TeX-insert-backslash 'delete-selection t)

Should this also include a line for 'TeX-insert-dollar?


The problem I'm seeing is that if I'm in TeX (or LaTeX) mode, running
with delete-selection-mode t, and type a $ when a region is selected,
the selected region is not killed.


Roger Lipsett

[Message part 2 (text/html, inline)]

Message #8 received at 23177 <at> debbugs.gnu.org (full text, mbox):

From: Mosè Giordano <mose <at> gnu.org>
To: Roger Lipsett <roger.lipsett <at> gmail.com>
Cc: 23177 <at> debbugs.gnu.org
Subject: Re: bug#23177: Inserting $ with delete-selection-mode set
Date: Thu, 31 Mar 2016 23:57:25 +0200

close 23177
tags 23177 notabug
thanks


Hi Roger,

2016-03-31 23:37 GMT+02:00 Roger Lipsett <roger.lipsett <at> gmail.com>:
>
> tex.el, at line 6315, contains the code
>
>   ;; delsel.el, `delete-selection-mode'
>   (put 'TeX-newline 'delete-selection t)
>   (put 'TeX-insert-quote 'delete-selection t)
>   (put 'TeX-insert-backslash 'delete-selection t)
>
> Should this also include a line for 'TeX-insert-dollar?

No.  That line was there until a few years ago but was removed on
purpose in order to provide a new feature:
http://git.savannah.gnu.org/cgit/auctex.git/commit/tex.el?id=d59628f1ee02abccc179c463214baddb5a17bf71

> The problem I'm seeing is that if I'm in TeX (or LaTeX) mode, running with delete-selection-mode t, and type a $ when a region is selected, the selected region is not killed.

If `TeX-electric-math' is non-nil, when you press `$' with an active
region, it will wrap the selection with opening and closing inline
equation symbols.  This is a feature AUCTeX provides, like for
parentheses in most other programming languages.  If you want to lose
this feature and be able to delete the region when inserting a dollar,
then these lines in your init file

    (setq TeX-electric-math nil)
    (put 'TeX-insert-dollar 'delete-selection t)

should do the trick.  Note that `TeX-electric-math' defaults to nil,
the first line shouldn't be actually needed.

Bye,
Mosè

Message #21 received at 23177 <at> debbugs.gnu.org (full text, mbox):

From: Mosè Giordano <mose <at> gnu.org>
To: Roger Lipsett <roger.lipsett <at> gmail.com>
Cc: 23177 <at> debbugs.gnu.org
Subject: Re: bug#23177: Inserting $ with delete-selection-mode set
Date: Fri, 1 Apr 2016 00:20:28 +0200

I just added the line

    (put 'TeX-insert-dollar 'delete-selection (lambda () (null
TeX-electric-math)))

to git version of AUCTeX
(http://git.savannah.gnu.org/gitweb/?p=auctex.git;a=commitdiff;h=da88a3eca3107372131aa26930e548c039fe1b51).
Now `delete-selection' behavior is dynamically determined by
`TeX-electric-math' and should always do the-right-thing™.  Thanks for
the suggestion.

Bye,
Mosè


2016-03-31 23:57 GMT+02:00 Mosè Giordano <mose <at> gnu.org>:
> close 23177
> tags 23177 notabug
> thanks
>
>
> Hi Roger,
>
> 2016-03-31 23:37 GMT+02:00 Roger Lipsett <roger.lipsett <at> gmail.com>:
>>
>> tex.el, at line 6315, contains the code
>>
>>   ;; delsel.el, `delete-selection-mode'
>>   (put 'TeX-newline 'delete-selection t)
>>   (put 'TeX-insert-quote 'delete-selection t)
>>   (put 'TeX-insert-backslash 'delete-selection t)
>>
>> Should this also include a line for 'TeX-insert-dollar?
>
> No.  That line was there until a few years ago but was removed on
> purpose in order to provide a new feature:
> http://git.savannah.gnu.org/cgit/auctex.git/commit/tex.el?id=d59628f1ee02abccc179c463214baddb5a17bf71
>
>> The problem I'm seeing is that if I'm in TeX (or LaTeX) mode, running with delete-selection-mode t, and type a $ when a region is selected, the selected region is not killed.
>
> If `TeX-electric-math' is non-nil, when you press `$' with an active
> region, it will wrap the selection with opening and closing inline
> equation symbols.  This is a feature AUCTeX provides, like for
> parentheses in most other programming languages.  If you want to lose
> this feature and be able to delete the region when inserting a dollar,
> then these lines in your init file
>
>     (setq TeX-electric-math nil)
>     (put 'TeX-insert-dollar 'delete-selection t)
>
> should do the trick.  Note that `TeX-electric-math' defaults to nil,
> the first line shouldn't be actually needed.
>
> Bye,
> Mosè

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