* Re: Sending a region to another X application
[not found] <mailman.185.1408636859.24723.help-gnu-emacs@gnu.org>
@ 2014-08-21 16:33 ` Buchs, Kevin J.
2014-08-21 16:38 ` How to save invisible (lisp) data in a text file Buchs, Kevin J.
1 sibling, 0 replies; 10+ messages in thread
From: Buchs, Kevin J. @ 2014-08-21 16:33 UTC (permalink / raw)
To: help-gnu-emacs
Dieter,
This is more of a general programming question than an emacs one, so you
might want to target me off list if you have follow-up questions. Having
some experience with TCL, I know that often a command shell is just a
TCL shell with functions defined for the commands you execute. If you
have such a situation, you can extend that shell with some code that can
accept commands from a network connection, pipe, or even via the X
clipboard. If you have created a major mode in emacs, you know enough to
know that you can talk to these communication channels from emacs lisp
without too much work. Extending the TCL shell is your major task.
As for using X-Window, I've not heard of such a thing done for
inter-application communication, but I suppose it is possible. You want
to generate X events for the keystrokes. It would take some work, so
think books when you are looking for documentation. Maybe some open
source GUI testing program could give you some pointers. I wouldn't
choose to go this route, however.
Kevin Buchs Research Computer Services Phone: 507-538-5459
Mayo Clinic 200 1st. St SW Rochester, MN 55905
http://mayoclinic.org http://facebook.com/MayoClinic http://youtube.com/MayoClinic http://twitter.com/MayoClinic
On 08/21/2014 11:00 AM, help-gnu-emacs-request@gnu.org wrote:
> Sending a region to another X application
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to save invisible (lisp) data in a text file
[not found] <mailman.185.1408636859.24723.help-gnu-emacs@gnu.org>
2014-08-21 16:33 ` Sending a region to another X application Buchs, Kevin J.
@ 2014-08-21 16:38 ` Buchs, Kevin J.
1 sibling, 0 replies; 10+ messages in thread
From: Buchs, Kevin J. @ 2014-08-21 16:38 UTC (permalink / raw)
To: help-gnu-emacs
Search these words: serialization in emacs lisp
and you will find some libraries/packages that can handle this for you.
Kevin Buchs Research Computer Services Phone: 507-538-5459
Mayo Clinic 200 1st. St SW Rochester, MN 55905
http://mayoclinic.org http://facebook.com/MayoClinic http://youtube.com/MayoClinic http://twitter.com/MayoClinic
^ permalink raw reply [flat|nested] 10+ messages in thread
* How to save invisible (lisp) data in a text file
@ 2014-08-21 14:04 sokobania
2014-08-21 18:28 ` Stefan Monnier
` (3 more replies)
0 siblings, 4 replies; 10+ messages in thread
From: sokobania @ 2014-08-21 14:04 UTC (permalink / raw)
To: help-gnu-emacs
I would like to do the following:
- display some normal text in a buffer with some major
mode named "my-special-mode"
- let the user interact with the buffer contents
- store in ram some lisp data generated by the user interaction
(like marks and extra text not displayed in the buffer)
- store the normal text AND this extra data in a file
Then, when reopening the file, emacs would:
- display the normal text in a buffer with "my-special-mode"
- reinstall in ram the lisp data associated to the file
Is this possible with emacs?
Oops... As the answer to "Is this possible with emacs?"
is always "yes", I would rather ask:
Is there a simple way (functions, mode, package...) to do that?
Are there any (simple) emacs-lisp examples of such a thing?
At the moment, the solution I was thinking of
would be to use file variables.
The major mode "my-special-mode" would:
- delete the last lines of the buffer when invoked
- add a hook to save-file to write the extra data at the end
of the file in a few lines like:
<my-special-mode-delimiter>
Local Variables:
mode: my-special-mode
my-special-mode-data: '(all I need to save to rebuild the data)
End:
It seems rather simple. Is it correct/standard?
Is there any mode which does something similar?
(write data into the "Local Variables:" section)
)jack(
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to save invisible (lisp) data in a text file
2014-08-21 14:04 sokobania
@ 2014-08-21 18:28 ` Stefan Monnier
2014-08-22 6:13 ` Thien-Thi Nguyen
` (2 subsequent siblings)
3 siblings, 0 replies; 10+ messages in thread
From: Stefan Monnier @ 2014-08-21 18:28 UTC (permalink / raw)
To: help-gnu-emacs
> Is there a simple way (functions, mode, package...) to do that?
Yes. ;-)
> Are there any (simple) emacs-lisp examples of such a thing?
enriched.el and ses.el come to mind (which use different approaches),
tho I'm sure there's more.
Stefan
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to save invisible (lisp) data in a text file
2014-08-21 14:04 sokobania
2014-08-21 18:28 ` Stefan Monnier
@ 2014-08-22 6:13 ` Thien-Thi Nguyen
2014-08-23 12:34 ` lee
2014-08-29 9:26 ` sokobania.01
3 siblings, 0 replies; 10+ messages in thread
From: Thien-Thi Nguyen @ 2014-08-22 6:13 UTC (permalink / raw)
To: help-gnu-emacs
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() sokobania@gmail.com
() Thu, 21 Aug 2014 07:04:22 -0700 (PDT)
Is there a simple way (functions, mode, package...) to do that?
Are there any (simple) emacs-lisp examples of such a thing?
what is simple but hidden complexity?
so hiding is fun? play hide the text (you see).
euclid-ish packing is more your cup of tea?
surf w/o froth to max out the density.
but anyway, who can say such things to your ears?
every day, Quality folds, and brains mold their fears.
composition, complaint, candor -- now what appears?
ruminations repo'd, w/ shared singes, shared sears.
--
Thien-Thi Nguyen
GPG key: 4C807502
(if you're human and you know it)
read my lisp: (responsep (questions 'technical)
(not (via 'mailing-list)))
=> nil
[-- Attachment #2: signature.asc --]
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to save invisible (lisp) data in a text file
2014-08-21 14:04 sokobania
2014-08-21 18:28 ` Stefan Monnier
2014-08-22 6:13 ` Thien-Thi Nguyen
@ 2014-08-23 12:34 ` lee
2014-08-29 9:26 ` sokobania.01
3 siblings, 0 replies; 10+ messages in thread
From: lee @ 2014-08-23 12:34 UTC (permalink / raw)
To: help-gnu-emacs
sokobania@gmail.com writes:
> I would like to do the following:
> - display some normal text in a buffer with some major
> mode named "my-special-mode"
> - let the user interact with the buffer contents
> - store in ram some lisp data generated by the user interaction
> (like marks and extra text not displayed in the buffer)
> - store the normal text AND this extra data in a file
>
> Then, when reopening the file, emacs would:
> - display the normal text in a buffer with "my-special-mode"
> - reinstall in ram the lisp data associated to the file
>
> Is this possible with emacs?
>
> Oops... As the answer to "Is this possible with emacs?"
> is always "yes", I would rather ask:
>
> Is there a simple way (functions, mode, package...) to do that?
> Are there any (simple) emacs-lisp examples of such a thing?
You can apply information from another buffer to the current
buffer. I've extended hi-lock-mode to do this, see
https://github.com/lee-/emacs
At least it shows you how it can be done. To store all information in
one file, I would think about using a save hook which creates a tar
archive from the two files or about using a unique marker line in the
file after which the extra information is stored while limiting the
display to everything above the marker.
--
GNU Emacs 24.4.50.2 (x86_64-unknown-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2014-08-17 on yun.yagibdah.de
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to save invisible (lisp) data in a text file
2014-08-21 14:04 sokobania
` (2 preceding siblings ...)
2014-08-23 12:34 ` lee
@ 2014-08-29 9:26 ` sokobania.01
2014-08-29 20:03 ` Stefan Monnier
[not found] ` <mailman.7874.1409342719.1147.help-gnu-emacs@gnu.org>
3 siblings, 2 replies; 10+ messages in thread
From: sokobania.01 @ 2014-08-29 9:26 UTC (permalink / raw)
To: help-gnu-emacs
Many thanks for the answers!
I had a look at enriched.el and ses.el.
I will use the method I described but, instead of
deleting the lines concerning the file-local variables,
I will just hide them using facemenu-set-invisible.
BTW, facemenu-set-invisible is NOT in the emacs command index:
https://www.gnu.org/software/emacs/manual/html_node/emacs/Command-Index.html
Is it a bug?
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to save invisible (lisp) data in a text file
2014-08-29 9:26 ` sokobania.01
@ 2014-08-29 20:03 ` Stefan Monnier
[not found] ` <mailman.7874.1409342719.1147.help-gnu-emacs@gnu.org>
1 sibling, 0 replies; 10+ messages in thread
From: Stefan Monnier @ 2014-08-29 20:03 UTC (permalink / raw)
To: help-gnu-emacs
> I will just hide them using facemenu-set-invisible.
Please don't use facemenu-set-invisible. Instead add the `invisible'
property with `put-text-property' (which is basically what
facemenu-set-invisible does internally).
> BTW, facemenu-set-invisible is NOT in the emacs command index:
> https://www.gnu.org/software/emacs/manual/html_node/emacs/Command-Index.html
> Is it a bug?
No: facemenu-set-invisible is a very little used thing, that's basically
useless in 99.99% of the cases.
Stefan
^ permalink raw reply [flat|nested] 10+ messages in thread
[parent not found: <mailman.7874.1409342719.1147.help-gnu-emacs@gnu.org>]
* Re: How to save invisible (lisp) data in a text file
[not found] ` <mailman.7874.1409342719.1147.help-gnu-emacs@gnu.org>
@ 2014-09-01 8:31 ` sokobania.01
2014-09-02 1:56 ` Stefan Monnier
0 siblings, 1 reply; 10+ messages in thread
From: sokobania.01 @ 2014-09-01 8:31 UTC (permalink / raw)
To: help-gnu-emacs
Le vendredi 29 août 2014 22:03:14 UTC+2, Stefan Monnier a écrit :
> > I will just hide them using facemenu-set-invisible.
>
> Please don't use facemenu-set-invisible. Instead add the `invisible'
> property with `put-text-property' (which is basically what
> facemenu-set-invisible does internally).
>
> No: facemenu-set-invisible is a very little used thing,
> that's basically useless in 99.99% of the cases.
Hmmm. I think I need an explanation!
In my GNU Emacs 24.3.1, facemenu-set-invisible is defined as:
(defun facemenu-set-invisible (start end)
"Make the region invisible.
This sets the `invisible' text property; it can be undone with
`facemenu-remove-special'."
(interactive "r")
(add-text-properties start end '(invisible t)))
Imho, it seems:
- It does exactly what I need (make the region invisible).
- Its implementation is exactly the code you recommend.
- Even if it's only 1 line of code, it's (a little bit)
higher level than this mere line of code.
- It has the same implementation within Xemacs.
I imagine there is probably very little chance
that this implementation changes.
Without your warning, I would have preferred to use a high
level function that makes the region invisible rather than
having to deal with the internal aspects of doing that
(I mean "rather than adding text properties").
So, can you explain why you don't recommend to use it?
Is it that anyone who wants to make the region invisible
should know that it must be done with text properties?
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: How to save invisible (lisp) data in a text file
2014-09-01 8:31 ` sokobania.01
@ 2014-09-02 1:56 ` Stefan Monnier
0 siblings, 0 replies; 10+ messages in thread
From: Stefan Monnier @ 2014-09-02 1:56 UTC (permalink / raw)
To: help-gnu-emacs
> So, can you explain why you don't recommend to use it?
> Is it that anyone who wants to make the region invisible
> should know that it must be done with text properties?
Exactly: you're not just going to make the text invisible, since you
also want to store this invisibility somewhere in a file. So you'll
have to know how it works underneath.
Stefan
^ permalink raw reply [flat|nested] 10+ messages in thread
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2014-08-21 16:33 ` Sending a region to another X application Buchs, Kevin J.
2014-08-21 16:38 ` How to save invisible (lisp) data in a text file Buchs, Kevin J.
2014-08-21 14:04 sokobania
2014-08-21 18:28 ` Stefan Monnier
2014-08-22 6:13 ` Thien-Thi Nguyen
2014-08-23 12:34 ` lee
2014-08-29 9:26 ` sokobania.01
2014-08-29 20:03 ` Stefan Monnier
[not found] ` <mailman.7874.1409342719.1147.help-gnu-emacs@gnu.org>
2014-09-01 8:31 ` sokobania.01
2014-09-02 1:56 ` Stefan Monnier
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