gnuplot-info

[Gnuplot-info] continued lines in Emacs gnuplot-mode

[Elias A. <eli...@gm...>]

Hi,

In gnuplot-mode, ‘gnuplot-send-line-to-gnuplot’ (C-c C-l) helpfully 
searches forward to the end of a continued line.  However, I thought it 
would be even more helpful to also search backward to the beginning of 
the logical line.

So below, you will find a version of the function that does that.

HTH,

	Elias


PS: My knowledge of Emacs Lisp is very incomplete …

PPS: gnuplot-mode redefines C-m to newline-and-indent.  This makes it 
awkward to get a newline without any indention.  In my experience, most 
Emacs modes use C-j for “smart newline” (whatever that may mean in the 
mode's context) but leave C-m to mean plain newline.


(defun gnuplot-send-line-to-gnuplot ()
   "Sends the current line to the gnuplot program.
Respects continuation lines.
This sets `gnuplot-recently-sent' to 'line."
   (interactive)
   (cond ((equal major-mode 'gnuplot-mode)
	 (let (start
	       end
                ;(start (save-excursion (beginning-of-line) 
(point-marker)))
	       ;(end   (save-excursion (beginning-of-line 2) (point-marker)))
	       )
            (save-excursion
              (end-of-line 0)
              (if (not (looking-at "^$")) (backward-char 1))
              (while (looking-at "\\\\") ; go to beginning of first 
continued line
                (end-of-line 0)
                (if (not (looking-at "^$")) (backward-char 1)))
              (next-line)
              (beginning-of-line)

              (setq start (point-marker)))
            (save-excursion
	     (goto-char start)
	     (end-of-line)
	     (backward-char 1)
	     (while (looking-at "\\\\")	; go to end of last continuation line
	       (end-of-line 2)
	       (backward-char 1))
	     (beginning-of-line 2)
	     (setq end (point-marker)))
	   (if (not (string-match "\\`\\s-*\\'"
				  (buffer-substring-no-properties start end)))
	       (gnuplot-send-region-to-gnuplot start end 'line))
	   end))
	(t
	 (message "You can only send lines in gnuplot-mode buffers to gnuplot.")
	 nil)))

Re: [Gnuplot-info] continued lines in Emacs gnuplot-mode

[Dima K. <gn...@di...>]

Elias Assmann <eli...@gm...> writes:

> Hi,
>
> In gnuplot-mode, ‘gnuplot-send-line-to-gnuplot’ (C-c C-l) helpfully 
> searches forward to the end of a continued line.  However, I thought it 
> would be even more helpful to also search backward to the beginning of 
> the logical line.
>
> So below, you will find a version of the function that does that.
>
> HTH,
>
> 	Elias
>
>
> PS: My knowledge of Emacs Lisp is very incomplete …
>
> PPS: gnuplot-mode redefines C-m to newline-and-indent.  This makes it 
> awkward to get a newline without any indention.  In my experience, most 
> Emacs modes use C-j for “smart newline” (whatever that may mean in the 
> mode's context) but leave C-m to mean plain newline.

Hi Elias. The gnuplot emacs interface in the gnuplot distribution is out
of date. A very updated mode is here:

 https://github.com/bruceravel/gnuplot-mode

You should patch that tree (if it doesn't have your fixes already).

Ethan and co: this came up last year, but we didn't do anything about
it. Can we either remove the gnuplot emacs mode from the CVS tree (since
it's maintained in github already), or make it obvious that the
gnuplot.el hosted HERE is a mirror rather than the upstream?

dima

Re: [Gnuplot-info] continued lines in Emacs gnuplot-mode

[Ethan A M. <eam...@gm...>]

On Wednesday, 05 March 2014 12:59:17 PM Dima Kogan wrote:

> Hi Elias. The gnuplot emacs interface in the gnuplot distribution is out
> of date. A very updated mode is here:
> 
>  https://github.com/bruceravel/gnuplot-mode
> 
> You should patch that tree (if it doesn't have your fixes already).
> 
> Ethan and co: this came up last year, but we didn't do anything about
> it. Can we either remove the gnuplot emacs mode from the CVS tree (since
> it's maintained in github already), or make it obvious that the
> gnuplot.el hosted HERE is a mirror rather than the upstream?
 
> dima

I would be happy to remove it.
But I didn't feel comfortable making that decision myself because
I am not an emacs user and have no feel for who would be
inconvenienced or otherwise unhappy if it disappears.

Could you write up a short paragraph for the documentation,
the FAQ, and the README explaining what gnuplot-mode is,
who might want to use it, and where to find it?

	thanks,

		Ethan


> Elias Assmann <eli...@gm...> writes:
> 
> > Hi,
> >
> > In gnuplot-mode, ‘gnuplot-send-line-to-gnuplot’ (C-c C-l) helpfully 
> > searches forward to the end of a continued line.  However, I thought it 
> > would be even more helpful to also search backward to the beginning of 
> > the logical line.
> >
> > So below, you will find a version of the function that does that.
> >
> > HTH,
> >
> > 	Elias
> >
> >
> > PS: My knowledge of Emacs Lisp is very incomplete …
> >
> > PPS: gnuplot-mode redefines C-m to newline-and-indent.  This makes it 
> > awkward to get a newline without any indention.  In my experience, most 
> > Emacs modes use C-j for “smart newline” (whatever that may mean in the 
> > mode's context) but leave C-m to mean plain newline.
> 

Re: [Gnuplot-info] continued lines in Emacs gnuplot-mode

[Dima K. <gn...@di...>]

sfeam <sf...@us...> writes:

> On Wednesday, 05 March 2014 12:59:17 PM Dima Kogan wrote:
>
>> Ethan and co: this came up last year, but we didn't do anything about
>> it. Can we either remove the gnuplot emacs mode from the CVS tree (since
>> it's maintained in github already), or make it obvious that the
>> gnuplot.el hosted HERE is a mirror rather than the upstream?
>  
> I would be happy to remove it.
> But I didn't feel comfortable making that decision myself because
> I am not an emacs user and have no feel for who would be
> inconvenienced or otherwise unhappy if it disappears.
>
> Could you write up a short paragraph for the documentation,
> the FAQ, and the README explaining what gnuplot-mode is,
> who might want to use it, and where to find it?

Hi Ethan.

Here's a description that mostly comes from the source:

================================================================

The emacs gnuplot-mode is a major mode for composing gnuplot scripts and
displaying their results using gnuplot. It can be obtained from MELPA or
from a distribution such as Debian or Ubuntu. Otherwise, the source
lives at

 https://github.com/bruceravel/gnuplot-mode

This mode offers several tools to help you compose your scripts,
including font-lock syntax colorization, a syntax table appropriate
to gnuplot, key bindings, pull-down menus, indentation, keyword
completions and variable customization using the Custom package.
Once the script is composed, there are several function for sending
some or all of the script to gnuplot.  The interaction with the
gnuplot process is within a comint buffer.  Plots can optionally be
displayed within Emacs.
================================================================

In non-emacs-speak, it provides facilities to make writing and running
scripts easier. I really do think it should be removed. Not only does
emacs have standardized packaging infrastructure that has this package
in it, distros such as Debian carry it too. It's a bit of a historical
accident that this ever lived in the gnuplot tree, but there's no reason
for it at all anymore. If we have a list somewhere of frontends and
libraries that use gnuplot, we should mention it there.

dima

Re: [Gnuplot-info] continued lines in Emacs gnuplot-mode

[Elias A. <eli...@gm...>]

Hi Dima,

On 03/05/2014 09:59 PM, Dima Kogan wrote:
> Hi Elias. The gnuplot emacs interface in the gnuplot distribution is out
> of date. A very updated mode is here:

Way out of date actually!  I did not really look at the header.

And good catch, I have to say -- I did not say which source I was using.

>   https://github.com/bruceravel/gnuplot-mode
>
> You should patch that tree (if it doesn't have your fixes already).

In fact, this already has

(defun gnuplot-send-line-to-gnuplot ()
…
	(save-excursion
           ;; go to start of continued command, or beginning of line
           ;; if this is not a continuation of a previous line <JJO>
           (gnuplot-beginning-of-continuation)
…

For what it's worth, I agree that it would be better to remove the 
outdated gnuplot.el from the gnuplot distribution :-).

Thank you for pointing me to the new version.

	Elias

Re: [Gnuplot-info] continued lines in Emacs gnuplot-mode

[Ethan M. <eam...@gm...>]

What about the files gnuplot-eldoc.el and gnuplot-eldoc.elc that are
generated from the master documentation file gnuplot.doc?    Are they part
of gnuplot-mode or are they for something else entirely?


On Thu, Mar 6, 2014 at 2:21 AM, Elias Assmann <eli...@gm...>wrote:

> Hi Dima,
>
> On 03/05/2014 09:59 PM, Dima Kogan wrote:
> > Hi Elias. The gnuplot emacs interface in the gnuplot distribution is out
> > of date. A very updated mode is here:
>
> Way out of date actually!  I did not really look at the header.
>
> And good catch, I have to say -- I did not say which source I was using.
>
> >   https://github.com/bruceravel/gnuplot-mode
> >
> > You should patch that tree (if it doesn't have your fixes already).
>
> In fact, this already has
>
> (defun gnuplot-send-line-to-gnuplot ()
> …
>         (save-excursion
>            ;; go to start of continued command, or beginning of line
>            ;; if this is not a continuation of a previous line <JJO>
>            (gnuplot-beginning-of-continuation)
> …
>
> For what it's worth, I agree that it would be better to remove the
> outdated gnuplot.el from the gnuplot distribution :-).
>
> Thank you for pointing me to the new version.
>
>         Elias
>
>
>
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Re: [Gnuplot-info] continued lines in Emacs gnuplot-mode

[Dima K. <gn...@di...>]

Ethan Merritt <eam...@gm...> writes:

> What about the files gnuplot-eldoc.el and gnuplot-eldoc.elc that are
> generated from the master documentation file gnuplot.doc?    Are they part
> of gnuplot-mode or are they for something else entirely?

Those aren't a part of gnuplot-mode. The .elc is a byte-compiled version
of the .el.

gnuplot-eldoc.el looks like it is meant to provide completion when
creating gnuplot scripts, but it was never being installed in any
meaningful way, so I've never used it (or heard of it for that matter).
The newer gnuplot-mode tree provides this functionality in a different
way. I'm pretty sure those files could be removed. They were
undiscoverable, and are now handled in a more logical (and obvious)
place.

dima