How to preprocess emacsclient with a mode choice?

How to preprocess emacsclient with a mode choice?

[Rustom Mody]

If I want to jump-into a running emacs with visiting file foo I can do:
$ emacsclient foo

However this does not give me foo with the mode I want.
Lets say I want to visit foo with auto-fill-mode. So I try

$ emacsclient -e "(let ((find-file-hook (cons 'auto-fill-mode find-file-hook))) 
(find-file \"foo\"))"

This kindof works but does not pop up the emacs window.

How to get pop-up behavior of first with the mode-choice of second?

Re: How to preprocess emacsclient with a mode choice?

[Kevin Rodgers]

On 11/28/13 7:48 AM, Rustom Mody wrote:
> If I want to jump-into a running emacs with visiting file foo I can do:
> $ emacsclient foo
>
> However this does not give me foo with the mode I want.

That behavior is no different than if you did:
$ emacs foo

is it?

> Lets say I want to visit foo with auto-fill-mode. So I try
>
> $ emacsclient -e "(let ((find-file-hook (cons 'auto-fill-mode find-file-hook)))
> (find-file \"foo\"))"
>
> This kindof works but does not pop up the emacs window.
>
> How to get pop-up behavior of first with the mode-choice of second?

Just do the same thing you would do in a new emacs instance:
M-x auto-file-mode

Better yet, put something in the file to turn on auto-fill-mode,
either directly or via a major mode hook.

-- 
Kevin Rodgers
Denver, Colorado, USA

Re: How to preprocess emacsclient with a mode choice?

[Rustom Mody]

On Friday, November 29, 2013 9:51:42 PM UTC+5:30, Kevin Rodgers wrote:
> On 11/28/13 7:48 AM, Rustom Mody wrote:
> > If I want to jump-into a running emacs with visiting file foo I can do:
> > $ emacsclient foo
> >
> > However this does not give me foo with the mode I want.
>
> That behavior is no different than if you did:
> $ emacs foo
>
> is it?
>
> > Lets say I want to visit foo with auto-fill-mode. So I try
> >
> > $ emacsclient -e "(let ((find-file-hook (cons 'auto-fill-mode find-file-hook)))
> > (find-file \"foo\"))"
> >
> > This kindof works but does not pop up the emacs window.
> >
> > How to get pop-up behavior of first with the mode-choice of second?
>
> Just do the same thing you would do in a new emacs instance:
> M-x auto-file-mode
>
> Better yet, put something in the file to turn on auto-fill-mode,
> either directly or via a major mode hook.

My original problem I solved by putting an explicit (raise-frame) after the
(find-file \"foo\")

Now the new problem is that that mode-line in this case is really ugly: the 
entire command arbitrarily truncated.

Now I guess I could tweak that but somehow its all smelling wrong.

Your point:

> That behavior is no different than if you did:
> $ emacs foo
> is it? 

is technically valid but it seems (to me!) to miss the point that emacsclient 
is used in different circumstances than emacs, viz when some process wants to
hand-off some stuff to 'whatever is $EDITOR'

Anyhow let me just take what you are saying and rephrase my question:

How to programmatically (ie in elisp) visit a file with a specific mode?
say a .c file in text mode

Note 1. I wish to avoid having to issue any M-x commands
Note 2. I have no control over the file -- so no file-variables possible
Note 3. This is odd-case behavior ie we dont want to modify default behavior(s)
ie no auto-mode-alist changes

So, poking around I see that 'after-find-file' and 'find-file-hook' is 
closest to what I want... but now the mode-line is a mess.

Re: How to preprocess emacsclient with a mode choice?

[Eli Zaretskii]

> Date: Fri, 29 Nov 2013 09:49:09 -0800 (PST)
> From: Rustom Mody <rustompmody@gmail.com>
> 
> How to programmatically (ie in elisp) visit a file with a specific mode?
> say a .c file in text mode

What's wrong with turning on the mode as part of the arguments you
pass to emacsclient?

Re: How to preprocess emacsclient with a mode choice?

[Rustom Mody]

On Saturday, November 30, 2013 1:16:27 AM UTC+5:30, Eli Zaretskii wrote:
> > Date: Fri, 29 Nov 2013 09:49:09 -0800 (PST)
> > From: Rustom Mody 
> > 
> > How to programmatically (ie in elisp) visit a file with a specific mode?
> > say a .c file in text mode
>
> What's wrong with turning on the mode as part of the arguments you
> pass to emacsclient?

You mean like this?
emacsclient -e "(progn (find-file \"foo\") (auto-fill-mode) (raise-frame))"

Heh! thats better than anything I came up with -- thanks!

Still wonder what makes the raise-frame necessary...
Also something fundamentally is different in the client-server relation between this and:
emacsclient foo

In the latter I have to do C-x #. In the former not

Re: How to preprocess emacsclient with a mode choice?

[Eli Zaretskii]

> Date: Fri, 29 Nov 2013 16:47:45 -0800 (PST)
> From: Rustom Mody <rustompmody@gmail.com>
> Injection-Date: Sat, 30 Nov 2013 00:47:46 +0000
> 
> On Saturday, November 30, 2013 1:16:27 AM UTC+5:30, Eli Zaretskii wrote:
> > > Date: Fri, 29 Nov 2013 09:49:09 -0800 (PST)
> > > From: Rustom Mody 
> > > 
> > > How to programmatically (ie in elisp) visit a file with a specific mode?
> > > say a .c file in text mode
> >
> > What's wrong with turning on the mode as part of the arguments you
> > pass to emacsclient?
> 
> You mean like this?
> emacsclient -e "(progn (find-file \"foo\") (auto-fill-mode) (raise-frame))"

Yes.

> Heh! thats better than anything I came up with -- thanks!

You are welcome.

> Still wonder what makes the raise-frame necessary...
> Also something fundamentally is different in the client-server relation between this and:
> emacsclient foo
> 
> In the latter I have to do C-x #. In the former not

All of these because when you visit a file via --eval, Emacs doesn't
"know" you visited it via the client, so it doesn't do the special
magic for that.

However, since this is a very special case, I don't think a better
solution is needed.

Re: How to preprocess emacsclient with a mode choice?

[Rustom Mody]

On Saturday, November 30, 2013 1:40:36 PM UTC+5:30, Eli Zaretskii wrote:
> > Date: Fri, 29 Nov 2013 16:47:45 -0800 (PST)
> > From: Rustom Mody 
> > Injection-Date: Sat, 30 Nov 2013 00:47:46 +0000
> > 
> > On Saturday, November 30, 2013 1:16:27 AM UTC+5:30, Eli Zaretskii wrote:
> > > > Date: Fri, 29 Nov 2013 09:49:09 -0800 (PST)
> > > > From: Rustom Mody 
> > > > 
> > > > How to programmatically (ie in elisp) visit a file with a specific mode?
> > > > say a .c file in text mode
> > >
> > > What's wrong with turning on the mode as part of the arguments you
> > > pass to emacsclient?
> > 
> > You mean like this?
> > emacsclient -e "(progn (find-file \"foo\") (auto-fill-mode) (raise-frame))"
>
> Yes.
>
> > Heh! thats better than anything I came up with -- thanks!
>
> You are welcome.
>
> > Still wonder what makes the raise-frame necessary...
> > Also something fundamentally is different in the client-server relation between this and:
> > emacsclient foo
> > 
> > In the latter I have to do C-x #. In the former not
>
> All of these because when you visit a file via --eval, Emacs doesn't
> "know" you visited it via the client, so it doesn't do the special
> magic for that.
>
> However, since this is a very special case, I don't think a better
> solution is needed.

Just seeing (from another thread -- thanks Emmanuel) that emacs takes a
funcall argument.  Checked… evidently emacs takes funcall as argument
whereas emacsclient does not.  Maybe it should also?