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* Making a function than can only be used interactively
@ 2022-07-03 19:16 carlmarcos--- via Users list for the GNU Emacs text editor
  2022-07-03 19:28 ` Bruno Barbier
       [not found] ` <N64WnlX--3-2@missing-mail-id>
  0 siblings, 2 replies; 58+ messages in thread
From: carlmarcos--- via Users list for the GNU Emacs text editor @ 2022-07-03 19:16 UTC (permalink / raw)
  To: Help Gnu Emacs


Is it possible to make an interactive function than can only be used interactively?


^ permalink raw reply	[flat|nested] 58+ messages in thread
* Re: Making a function than can only be used interactively
@ 2022-07-04 21:07 Christopher Dimech
  2022-07-04 21:45 ` Stefan Monnier
  0 siblings, 1 reply; 58+ messages in thread
From: Christopher Dimech @ 2022-07-04 21:07 UTC (permalink / raw)
  To: monnier, tsdh, help-gnu-emacs

> Jul 4, 2022, 20:45 by monnier@iro.umontreal.ca:

>>>>>            More seriously, what are you trying to gain by "mak[ing] a function
>>>>>            interactive only"?

>>>        For instance, writing an interactive wrapper function calling a non-interactive
>>>        mother function.


>    A common enough case, which you can do just fine without having to
>    prevent non-interactive calls to the interactive wrapper.

>>>        Technically, you can use `completing-read` and `read-from-minibuffer` if you'd also
>>>        like to set values interactively, while calling the function non-interactively.


>    You mean you can turn

>    (defun foo (a b c)
>    (interactive ...)
>    ...)

>    into

>    (defun foo ()
>    (interactive)
>    (let ((a ...)
>    (b ...)
>    (c ...))
>    ...))

Yes, that is what I had in mind.

>    Indeed. It's usually discouraged because it's incompatible with
>    non-interactive uses of the function, but in the case under discussion
>    you don't care about that because you already have another function to
>    use for non-interactive calls.

It is indeed incompatible with non-interactive use.  A thing that can be done
is fire the warning even when Lisp Code in not transformed into byte-code.

Although byte compilation in recommended, I wonder how often people actually
byte-compile every file.  Byte compiling will often tell you errors or warning
in your elisp code that you normally wouldn't know, but I think that running
an interactive-only function non-interactively is serious enough to insert the
warning in the warnings buffer anyway.


>>>        I am not sure if in practice that is ever desired.


>    It's done occasionally, typically in cases where it's difficult to
>    cleanly separate the part of the code that prompts the user from the
>    part that actually performs the desired operation.

>    Stefan







^ permalink raw reply	[flat|nested] 58+ messages in thread

end of thread, other threads:[~2022-08-09  2:24 UTC | newest]

Thread overview: 58+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-07-03 19:16 Making a function than can only be used interactively carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-03 19:28 ` Bruno Barbier
     [not found] ` <N64WnlX--3-2@missing-mail-id>
2022-07-03 19:36   ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-03 19:53     ` Tassilo Horn
2022-07-03 20:17       ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-04  4:51         ` Tassilo Horn
2022-07-05 23:13       ` Emanuel Berg
2022-07-03 20:14     ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-07-03 20:27       ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-03 20:51       ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-03 21:18         ` Stefan Monnier
2022-07-03 21:29       ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-03 22:01         ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-07-03 22:45           ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-04  1:13             ` Stefan Monnier
     [not found]             ` <jwvczelllyq.fsf-monnier+emacs@gnu.org-N65lQ2m----2>
2022-07-04 10:36               ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-04 10:55                 ` Tassilo Horn
2022-07-04 11:43                   ` Christopher Dimech
2022-07-04 13:21                     ` Stefan Monnier
2022-07-04 14:08                       ` Robert Pluim
2022-07-04 21:40                       ` Christopher Dimech
2022-07-05 17:35                         ` Jean Louis
2022-07-04 19:17                   ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-04 19:40                     ` Stefan Monnier
2022-07-04 19:50                       ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-04 20:45                         ` Stefan Monnier
2022-07-06  0:07                         ` Jean Louis
2022-07-06 20:00                           ` Christopher Dimech
2022-07-06 20:29                             ` Jean Louis
2022-07-07 11:03                               ` Christopher Dimech
2022-07-07 21:06                               ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-07 21:28                                 ` Emanuel Berg
2022-07-07 22:14                                   ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-08  3:40                                     ` Emanuel Berg
2022-07-08  6:08                                     ` Yuri Khan
2022-07-08  6:30                                       ` Emanuel Berg
2022-07-08  6:55                                         ` Yuri Khan
2022-07-08 11:44                                           ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-09  2:05                                             ` Emanuel Berg
2022-07-10  4:33                                             ` Emanuel Berg
2022-07-08 12:06                                           ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-08 12:11                                           ` Christopher Dimech
     [not found]                                           ` <N6Sh4jm--3-2@tutanota.com-N6ShCt5----2>
2022-07-08 12:18                                             ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-08 16:14                                           ` Christopher Dimech
2022-07-08 20:29                                             ` [External] : " Drew Adams
2022-07-08 21:09                                               ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-08 22:17                                                 ` Drew Adams
2022-07-08 22:34                                                   ` carlmarcos--- via Users list for the GNU Emacs text editor
2022-07-09 14:53                                                     ` Drew Adams
2022-08-09  2:24                                                   ` Emanuel Berg
2022-07-09  2:06                                                 ` Emanuel Berg
2022-07-08 23:19                                               ` Emanuel Berg
2022-07-04 20:53                       ` Drew Adams
2022-07-05 23:30           ` no difference between interactive and "from Lisp" (was: Re: Making a function than can only be used interactively) Emanuel Berg
2022-07-06  2:28             ` no difference between interactive and "from Lisp" Stefan Monnier via Users list for the GNU Emacs text editor
2022-07-06  3:42               ` Emanuel Berg
2022-07-04  1:06     ` Making a function than can only be used interactively Po Lu
  -- strict thread matches above, loose matches on Subject: below --
2022-07-04 21:07 Christopher Dimech
2022-07-04 21:45 ` Stefan Monnier
2022-07-04 22:05   ` Christopher Dimech
2022-07-04 22:35     ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-07-05 14:02       ` [External] : " Drew Adams

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