flyspell-prog-mode, flyspell-mode and different dictionary

flyspell-prog-mode, flyspell-mode and different dictionary

[Sébastien Gendre]

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Hello,

I use a lot flyspell-mode when I write E-mails and Org-mode documents.
And by default, its language is set to french on my system. Which is my
main language.

Recently, I discovered flyspell-prog-mode and wanted to use it in all
programming language editing. But this time, set to english.

In the manual, I didn't found a way to set the spell check language
based on the mode. And there is no flyspell-prog-mode-hook.

Did I miss something ?

Or is the only solution is to attach a lambda function, to prog-mode-hook,
that will call flyspell-prog-mode and ispell-change-dictionary like
this:

        (add-hook 'prog-mode-hook
                  '(lambda ()
                     (flyspell-prog-mode t)
                     (ispell-change-dictionary "english")))



Best regards

-------
Gendre Sébastien

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Re: flyspell-prog-mode, flyspell-mode and different dictionary

[Eli Zaretskii]

> From: Sébastien Gendre <seb@k-7.ch>
> Date: Tue, 23 Jul 2024 12:45:25 +0200
> 
> Or is the only solution is to attach a lambda function, to prog-mode-hook,
> that will call flyspell-prog-mode and ispell-change-dictionary like
> this:
> 
>         (add-hook 'prog-mode-hook
>                   '(lambda ()
>                      (flyspell-prog-mode t)
>                      (ispell-change-dictionary "english")))

I don't know if this is the _only_ solution, but it is certainly a
valid solution.  (Of course, the hook doesn't have to be a
lambda-function, it could be a named function.)

Re: flyspell-prog-mode, flyspell-mode and different dictionary

[Joel Reicher]

Sébastien Gendre <seb@k-7.ch> writes:

> Recently, I discovered flyspell-prog-mode and wanted to use it 
> in all programming language editing. But this time, set to 
> english.
>
> In the manual, I didn't found a way to set the spell check 
> language based on the mode. And there is no 
> flyspell-prog-mode-hook.

Have you checked the definition of flyspell-prog-mode?

In my installation (29.4) it calls flyspell-prog-mode-hook.

Possibly you are being misled by this hook being undefined by 
default?

Regards,

        - Joel

Re: flyspell-prog-mode, flyspell-mode and different dictionary

[Sébastien Gendre]

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I checked for variable `flyspell-prog-mode-hook` with
`describe-variable`, with no success.


Joel Reicher <joel.reicher@gmail.com> writes:

> Sébastien Gendre <seb@k-7.ch> writes:
>
>> Recently, I discovered flyspell-prog-mode and wanted to use it in
>> all programming language editing. But this time, set to english.
>>
>> In the manual, I didn't found a way to set the spell check language
>> based on the mode. And there is no flyspell-prog-mode-hook.
>
> Have you checked the definition of flyspell-prog-mode?
>
> In my installation (29.4) it calls flyspell-prog-mode-hook.
>
> Possibly you are being misled by this hook being undefined by default?
>
> Regards,
>
>        - Joel

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Re: flyspell-prog-mode, flyspell-mode and different dictionary

[Joel Reicher]

Sébastien Gendre <seb@k-7.ch> writes:

> I checked for variable `flyspell-prog-mode-hook` with 
> `describe-variable`, with no success.

Undefined variables won't show up there, which is why I asked if 
you checked the definition of the flyspell-prog-mode *function*.

If you setq an undefined variable, it will define it, and if your 
version of the mode references this (previously undefined) 
variable, it will work as you expect.

Regards,

        - Joel

Re: flyspell-prog-mode, flyspell-mode and different dictionary

[Michael Heerdegen via Users list for the GNU Emacs text editor]

Joel Reicher <joel.reicher@gmail.com> writes:

> Sébastien Gendre <seb@k-7.ch> writes:
>
> > I checked for variable `flyspell-prog-mode-hook` with
> > `describe-variable`, with no success.
>
> Undefined variables won't show up there, which is why I asked if you
> checked the definition of the flyspell-prog-mode *function*.
>
> If you setq an undefined variable, it will define it, and if your
> version of the mode references this (previously undefined) variable,
> it will work as you expect.

With other words: You can (add-hook 'flyspell-prog-mode-hook ...) even
when flyspell-prog-mode-hook is void, without error.  And enabling
`flyspell-prog-mode' _will_ look at and use the binding.


Michael.

Re: flyspell-prog-mode, flyspell-mode and different dictionary

[Sébastien Gendre]

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Ok. Thank you very much. :)


Michael Heerdegen via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> writes:

> Joel Reicher <joel.reicher@gmail.com> writes:
>
>> Sébastien Gendre <seb@k-7.ch> writes:
>>
>> > I checked for variable `flyspell-prog-mode-hook` with
>> > `describe-variable`, with no success.
>>
>> Undefined variables won't show up there, which is why I asked if you
>> checked the definition of the flyspell-prog-mode *function*.
>>
>> If you setq an undefined variable, it will define it, and if your
>> version of the mode references this (previously undefined) variable,
>> it will work as you expect.
>
> With other words: You can (add-hook 'flyspell-prog-mode-hook ...) even
> when flyspell-prog-mode-hook is void, without error.  And enabling
> `flyspell-prog-mode' _will_ look at and use the binding.
>
>
> Michael.

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Re: flyspell-prog-mode, flyspell-mode and different dictionary

[Stefan Monnier via Users list for the GNU Emacs text editor]

>         (add-hook 'prog-mode-hook
>                   '(lambda ()

Please don't quote lambdas.


        Stefan