Re: [AUCTeX] Customizing "%cS" in TeX-expand-list

[jfbu]

Le 20/11/2014 10:19, Mosè Giordano a écrit :
> Hi Jean-Francois,
>
> 2014-11-19 19:11 GMT+01:00 jfbu <address@hidden>:
> > Hi,
> >
> > I have upgraded to AUCTeX 11.88 via Elpa. Thanks to all who
> > worked on it, as for the first time since quite a few years
> > I experience the joy of not having C-c ` open some "TeXLive 20xx"
> > window or, worse, tell me "Error occured after last TeX file closed"
> >
> > (the few times I tried an upgrade since 2011, it
> > made things worse, and I had to revert to an ancient auctex
> > installation copied-pasted from some other machine).
> >
> > I was quite elated to see that C-c ` works as expected with 11.88,
> > (it probably does since a long time, I was just unable to upgrade
> > earlier)
> > and there is a very nice Error Overview menu entry which I didn't
> > know about until now. (or did I just not see it? possible)
>
> The error overview is a new feature in AUCTeX 11.88 ;-)

I see it mentioned in the Releases notes indeed. This is a very nice
feature. I like the colors too ;-)

> > Thanks to the experts who made this happen: Mosè, Tassilo, ..., sorry
> > for the people I do not cite but I subscribe to the mailing list
> > since only very recently. Great job!
>
> Thanks!
>
> > This message is about some customizations which I did some years back,
> > at a time when I very temporarily to some vague elisp understanding,
> > and that I am re-integrating to my custom-file (the understanding having
> > vanished)
> >
> > My question is about how doing the things more effciently than my
> > current method, which is to customize the full TeX-expand-list variable
> > for only one change.
> > The
> > default definition of %cS as found in TeX-expand-list is
> >
> > ("%cS" TeX-source-specials-view-expand-client)
> >
> > I replace it by
> > ("%cS" (lambda nil "/Applications/Emacs.app/Contents/MacOS/bin/emacsclient
> > --no-wait +%%l %%f"))
> >
> > This is to avoid having to put an alias to emacsclient in /usr/bin (which
> > would quite possibly be wiped away by system upgrades) or more generally in
> > $PATH
> >
> > Also this spares me having to put an editor entry in .xdvirc
> >
> > (I also configured the program for output-dvi to be, in case source-specials
> > is on:
> >
> > open -a XQuartz && %(o?)xdvi -sourceposition \"%n %b\" -editor \"%cS\" [some
> > paper option] %d
> >
> > and for output-pdf:
> >
> > /Applications/Skim.app/Contents/SharedSupport/displayline -b %n %o %b
> >
> > This is all on Mac OS X, and my Emacs is recently upgraded "Emacs Mac Port":
> > GNU Emacs 24.4.3  from https://github.com/railwaycat/emacs-mac-port
> > )
> >
> > What I do currently is to have the full TeX-expand-list
> > customized in order to apply this single replacement of "%cS"
> >
> > Is there a Lisp-way to do this more economically?
> > Could I just overwrite the TeX-source-specials-view-expand-client function?
>
> You have two options: add
>
> (add-to-list
>   'TeX-expand-list
>   '("%cS"
>     (lambda nil
>       "/Applications/Emacs.app/Contents/MacOS/bin/emacsclient --no-wait
> +%%l %%f")))
>
> (sorry for hard-wrapping of the code above) to your init file.  This
> will add a new "%cS" entry to `TeX-expand-list' and only the first one
> will be actually used.  Or, as you suggested, you can redefine the
> `TeX-source-specials-view-expand-client' function after loading
> tex.el:
>
> (eval-after-load "tex"
>    '(defun TeX-source-specials-view-expand-client ()
>       "/Applications/Emacs.app/Contents/MacOS/bin/emacsclient --no-wait
> +%%l %%f"))

Thanks Mosè! this is exactly what I was looking for. I opted for
the first method, I added the (add-to-list ...) to TeX-mode-hook
in my init file. And it works as expected, thanks.

I will keep the second option somewhere as a model if I need
a similar thing in the future.


> > A second question:
> >
> > I know AUCTeX has many many features, and I am only using a small
> > fraction. Currently I observe that the first loading when I launch
> > Emacs and open a first .tex file takes noticeable time (about five seconds).
> >
> > Is there a "mode-for-the-dumb-guy-who-thinks-he-needs-only-a-few-things"
> > which would load faster?
>
> What makes AUCTeX slow should be the loading of style files, you can
> try disabling file parsing and saving auto/*.el files, but then you'll
> lose many features of AUCTeX.  This may be ok if you want just to open
> a *TeX source and do minimal editing.

It is true I have never learnt to really use AUCTeX's features,
beyond the minimal things such as C-cC-e. I need to improve in
this area.

Yesterday, I tried removing about 80 (el/elc) pairs of files from
style/ (among the 148 such pairs currently there). For example,
style files for languages I do not use on a reguler basis. But
this had nil effect on the 5 seconds loading time. Admittedly now
that I look again at these files, I recall that I had kept all the
"big" ones. I will try again.

No wait, I just now deleted *all* files in

.emacs.d/elpa/auctex-11.88/style apart from .nosearch

and I observe the exact same 5 seconds delay on opening a .tex file
(it does not matter if a latex file or Plain, even only a Hello
world\bye file).

This is a "one-time-only" delay, opening further
.tex files is instantaneous. (perhaps will be less so after I
reinstall all style/* files)

I can surely learn to live with it...

Thanks for the help
Bye,
Jean-François