* Can one modify a variable definition in a major mode depending on buffer name?
@ 2016-07-30 12:54 Tom Browder
2016-07-30 14:26 ` Emanuel Berg
2016-07-30 17:37 ` Stefan Monnier
0 siblings, 2 replies; 12+ messages in thread
From: Tom Browder @ 2016-07-30 12:54 UTC (permalink / raw
To: help-gnu-emacs
I think I can do that, with some experimentation, but can anyone confirm
that it's reasonably possible?
My use case is modifying our perl6-mode for the slight difference in
allowable identifiers between Perl 6 and NQP (Not Quite Perl). By
convention, nqp files end in ".nqp" so that the buffer name should be a
good way to automatically change the single regex bound to a var name in
the mode file. That would save having to write another major mode just for
such a small change.
Thanks.
Best regards,
-Tom
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 12:54 Can one modify a variable definition in a major mode depending on buffer name? Tom Browder
@ 2016-07-30 14:26 ` Emanuel Berg
2016-07-30 16:22 ` Tom Browder
2016-07-30 16:37 ` John Mastro
2016-07-30 17:37 ` Stefan Monnier
1 sibling, 2 replies; 12+ messages in thread
From: Emanuel Berg @ 2016-07-30 14:26 UTC (permalink / raw
To: help-gnu-emacs
Tom Browder wrote:
> I think I can do that, with some
> experimentation, but can anyone confirm that
> it's reasonably possible?
;;; Perl
(defvar perl-propaganda)
(setq perl-propaganda "There's more than one way to do it!")
;; (setq perl-mode-hook nil)
(defun perl-mode-hook-f ()
(let*((filename (buffer-name))
(filename-parts (split-string filename "\\."))
(extention (cadr filename-parts) ))
(when (string-equal extention "nqp")
(setq-local perl-propaganda "Do it today, in a different way!") )))
(add-hook 'perl-mode-hook #'perl-mode-hook-f)
(let ((modes (list
'("\\.nqp\\'" . perl-mode)
'("\\.tex\\'" . latex-mode)
'("\\.php\\'" . html-mode)
;; etc.
)))
(setf auto-mode-alist (nconc modes auto-mode-alist)) )
--
underground experts united .... http://user.it.uu.se/~embe8573
Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic
- so far: 64 Blogomatic articles -
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 14:26 ` Emanuel Berg
@ 2016-07-30 16:22 ` Tom Browder
2016-07-30 17:00 ` Emanuel Berg
2016-07-30 16:37 ` John Mastro
1 sibling, 1 reply; 12+ messages in thread
From: Tom Browder @ 2016-07-30 16:22 UTC (permalink / raw
To: help-gnu-emacs@gnu.org
On Saturday, July 30, 2016, Emanuel Berg <embe8573@student.uu.se> wrote:
> Tom Browder wrote:
> > I think I can do that, with some
> > experimentation, but can anyone confirm that
> > it's reasonably possible?
>
> ;;; Perl
> (defvar perl-propaganda)
Thanks, Emanuel, for a working example. I wasn't asking for a solution,
but it is appreciated.
Also, I love your choice of names!
I have to say this list is right up there with the Perl 6 lists for
friendliness and patience with noobs. BTW, is there an irc channel for
elispers?
Thanks again, Emanuel!
Best regards,
-Tom
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 14:26 ` Emanuel Berg
2016-07-30 16:22 ` Tom Browder
@ 2016-07-30 16:37 ` John Mastro
2016-07-30 17:33 ` Tom Browder
1 sibling, 1 reply; 12+ messages in thread
From: John Mastro @ 2016-07-30 16:37 UTC (permalink / raw
To: help-gnu-emacs@gnu.org
> (let*((filename (buffer-name))
> (filename-parts (split-string filename "\\."))
> (extention (cadr filename-parts) ))
> (when (string-equal extention "nqp")
> (setq-local perl-propaganda "Do it today, in a different way!") )))
aka (when (string-match-p "\\.nqp\\'" (buffer-name)) ...)
John
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 16:22 ` Tom Browder
@ 2016-07-30 17:00 ` Emanuel Berg
2016-07-30 17:28 ` Tom Browder
0 siblings, 1 reply; 12+ messages in thread
From: Emanuel Berg @ 2016-07-30 17:00 UTC (permalink / raw
To: help-gnu-emacs
Tom Browder wrote:
> is there an irc channel for elispers?
Ha ha - you old jester!
Check out how to set up ERC:
http://user.it.uu.se/~embe8573/conf/emacs-init/erc-my.el
In particular:
(setq erc-server "irc.freenode.net")
(setq erc-port 6667)
Then
/j emacs
I'm known as incal there but don't tell anyone
as it is probably against the rules to revel
one's true identity...
--
underground experts united .... http://user.it.uu.se/~embe8573
Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic
- so far: 64 Blogomatic articles -
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 17:00 ` Emanuel Berg
@ 2016-07-30 17:28 ` Tom Browder
0 siblings, 0 replies; 12+ messages in thread
From: Tom Browder @ 2016-07-30 17:28 UTC (permalink / raw
To: help-gnu-emacs@gnu.org
On Saturday, July 30, 2016, Emanuel Berg <embe8573@student.uu.se> wrote:
> Tom Browder wrote:
>
> > is there an irc channel for elispers?
>
> Ha ha - you old jester!
>
> Check out how to set up ERC:
>
> http://user.it.uu.se/~embe8573/conf/emacs-init/erc-my.el
I just joined channel #mcmanny using irccloud and see the name 'incal' but
no one else at the moment, but I did announce myself and asked if any
elispers were about.
-Tom
^ permalink raw reply [flat|nested] 12+ messages in thread
* Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 16:37 ` John Mastro
@ 2016-07-30 17:33 ` Tom Browder
0 siblings, 0 replies; 12+ messages in thread
From: Tom Browder @ 2016-07-30 17:33 UTC (permalink / raw
To: John Mastro; +Cc: help-gnu-emacs@gnu.org
On Saturday, July 30, 2016, John Mastro <john.b.mastro@gmail.com
<javascript:_e(%7B%7D,'cvml','john.b.mastro@gmail.com');>> wrote:
> > (let*((filename (buffer-name))
> > (filename-parts (split-string filename "\\."))
> > (extention (cadr filename-parts) ))
> > (when (string-equal extention "nqp")
> > (setq-local perl-propaganda "Do it today, in a different way!") )))
>
> aka (when (string-match-p "\\.nqp\\'" (buffer-name)) ...
Thanks, John. It seems like elisp has the same motto as Perl, i.e.,
"TIMTOWTDI."
Best,
-Tom
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 12:54 Can one modify a variable definition in a major mode depending on buffer name? Tom Browder
2016-07-30 14:26 ` Emanuel Berg
@ 2016-07-30 17:37 ` Stefan Monnier
2016-07-30 17:48 ` Tom Browder
2016-07-30 17:48 ` Tom Browder
1 sibling, 2 replies; 12+ messages in thread
From: Stefan Monnier @ 2016-07-30 17:37 UTC (permalink / raw
To: help-gnu-emacs
> My use case is modifying our perl6-mode for the slight difference in
> allowable identifiers between Perl 6 and NQP (Not Quite Perl). By
> convention, nqp files end in ".nqp" so that the buffer name should be a
> good way to automatically change the single regex bound to a var name in
> the mode file. That would save having to write another major mode just for
> such a small change.
(add-to-list 'auto-mode-alist '("\\.nqp\\'" . nqp-mode))
(define-derived-mode nqp-mode perl-mode "NQP"
"Major mode for NQP's subset of Perl 6."
(setq-local the-var-i-need-to-change the-new-value))
-- Stefan
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 17:37 ` Stefan Monnier
@ 2016-07-30 17:48 ` Tom Browder
2016-07-30 17:48 ` Tom Browder
1 sibling, 0 replies; 12+ messages in thread
From: Tom Browder @ 2016-07-30 17:48 UTC (permalink / raw
To: Stefan Monnier; +Cc: help-gnu-emacs@gnu.org
On Saturday, July 30, 2016, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> > My use case is modifying our perl6-mode for the slight difference in
> > allowable identifiers between Perl 6 and NQP (Not Quite Perl). By
> convention, nqp files end in ".nqp" so that the buffer name should be a
> > good way to automatically change the single regex bound to a var name in
> > the mode file. That would save having to write another major mode just
> for
> > such a small change.
>
> (add-to-list 'auto-mode-alist '("\\.nqp\\'" . nqp-mode))
>
> (define-derived-mode nqp-mode perl-mode "NQP"
> "Major mode for NQP's subset of Perl 6."
> (setq-local the-var-i-need-to-change the-new-value))
Stefan, are those lines the entire contents of a "nqp-mode.el" file?
-Tom
^ permalink raw reply [flat|nested] 12+ messages in thread
* Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 17:37 ` Stefan Monnier
2016-07-30 17:48 ` Tom Browder
@ 2016-07-30 17:48 ` Tom Browder
2016-08-02 1:28 ` Michael Heerdegen
1 sibling, 1 reply; 12+ messages in thread
From: Tom Browder @ 2016-07-30 17:48 UTC (permalink / raw
To: Stefan Monnier; +Cc: help-gnu-emacs@gnu.org
On Saturday, July 30, 2016, Stefan Monnier <monnier@iro.umontreal.ca
<javascript:_e(%7B%7D,'cvml','monnier@iro.umontreal.ca');>> wrote:
> > My use case is modifying our perl6-mode for the slight difference in
> > allowable identifiers between Perl 6 and NQP (Not Quite Perl). By
> convention, nqp files end in ".nqp" so that the buffer name should be a
> > good way to automatically change the single regex bound to a var name in
> > the mode file. That would save having to write another major mode just
> for
> > such a small change.
>
> (add-to-list 'auto-mode-alist '("\\.nqp\\'" . nqp-mode))
>
> (define-derived-mode nqp-mode perl-mode "NQP"
> "Major mode for NQP's subset of Perl 6."
> (setq-local the-var-i-need-to-change the-new-value))
Stefan, are those lines the entire contents of a "nqp-mode.el" file?
-Tom
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-07-30 17:48 ` Tom Browder
@ 2016-08-02 1:28 ` Michael Heerdegen
2016-08-02 1:35 ` Tom Browder
0 siblings, 1 reply; 12+ messages in thread
From: Michael Heerdegen @ 2016-08-02 1:28 UTC (permalink / raw
To: Tom Browder; +Cc: help-gnu-emacs@gnu.org, Stefan Monnier
Tom Browder <tom.browder@gmail.com> writes:
> > (add-to-list 'auto-mode-alist '("\\.nqp\\'" . nqp-mode))
> >
> > (define-derived-mode nqp-mode perl-mode "NQP"
> > "Major mode for NQP's subset of Perl 6."
> > (setq-local the-var-i-need-to-change the-new-value))
>
>
> Stefan, are those lines the entire contents of a "nqp-mode.el" file?
[I'm not Stefan]
Yes, that should exactly do what you want. It's more or less the
canonical solution for your problem (do you miss anything?).
Michael.
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: Can one modify a variable definition in a major mode depending on buffer name?
2016-08-02 1:28 ` Michael Heerdegen
@ 2016-08-02 1:35 ` Tom Browder
0 siblings, 0 replies; 12+ messages in thread
From: Tom Browder @ 2016-08-02 1:35 UTC (permalink / raw
To: Michael Heerdegen; +Cc: help-gnu-emacs@gnu.org, Stefan Monnier
On Monday, August 1, 2016, Michael Heerdegen <michael_heerdegen@web.de>
wrote:
> Tom Browder <tom.browder@gmail.com <javascript:;>> writes:
>
> > > (add-to-list 'auto-mode-alist '("\\.nqp\\'" . nqp-mode))
> > >
> > > (define-derived-mode nqp-mode perl-mode "NQP"
> > > "Major mode for NQP's subset of Perl 6."
> > > (setq-local the-var-i-need-to-change the-new-value))
> >
> >
> > Stefan, are those lines the entire contents of a "nqp-mode.el" file?
>
> [I'm not Stefan]
>
> Yes, that should exactly do what you want. It's more or less the
> canonical solution for your problem (do you miss anything?).
Thanks, Michael. The reason I asked if that was all is that often we see a
solution that is not exactly "cookbook" because it leaves out things that
make it complete. I have not tried it yet but will tomorrow.
Best regards,
-Tom
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2016-08-02 1:35 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-07-30 12:54 Can one modify a variable definition in a major mode depending on buffer name? Tom Browder
2016-07-30 14:26 ` Emanuel Berg
2016-07-30 16:22 ` Tom Browder
2016-07-30 17:00 ` Emanuel Berg
2016-07-30 17:28 ` Tom Browder
2016-07-30 16:37 ` John Mastro
2016-07-30 17:33 ` Tom Browder
2016-07-30 17:37 ` Stefan Monnier
2016-07-30 17:48 ` Tom Browder
2016-07-30 17:48 ` Tom Browder
2016-08-02 1:28 ` Michael Heerdegen
2016-08-02 1:35 ` Tom Browder
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