From: Nick Dokos <nicholas.dokos@hp.com>
To: Holger Hoefling <hhoeflin@gmail.com>
Cc: nicholas.dokos@hp.com, emacs-orgmode@gnu.org,
Carsten Dominik <carsten.dominik@gmail.com>
Subject: Re: Not overwriting unchanged source code files when tangling
Date: Fri, 18 Nov 2011 14:32:36 -0500 [thread overview]
Message-ID: <5701.1321644756@alphaville.americas.hpqcorp.net> (raw)
In-Reply-To: Message from Holger Hoefling <hhoeflin@gmail.com> of "Fri, 18 Nov 2011 20:01:55 +0100." <CAFDswJtMzFZgRQqsFtiQNT7c1uFE7HV4kek5j9akx1yAdWZZEg@mail.gmail.com>
Holger Hoefling <hhoeflin@gmail.com> wrote:
> Hi Carsten,
>
> thanks for the suggestion, but as I agree with Brian. If there is more
> than one source file in the org-file, then the whole project would
> still be recompiled, not just the updated file.
>
> To be more exact, I actually don't want to compile things, but run R
> scripts using make. So the waiting time if a computationally intensive
> step is repeated although it is not necessary can be substantial.
>
> I wonder how difficult the following change would be (no emacs lisp experience, also do not know the org source code):
>
> - would it be possible to write out the source files when tangling
> - into a temporary directory, then compare to the actual target files
> - and overwrite only if something has changed? Then the time stamps
> - would stay fixed. Hopefully, this would not involve too much work:
You've lost right there unless there is a method to select *which* source
blocks to tangle. IOW, the problem is not the *comparison* of the temp and actual
target files, it is the *production* of the temp files themselves: that's
the computationally expensive step and this method does nothing to alleviate
that. Unless I'm missing something.
Nick
> - creating temporary files and remembering the mapping to true files
> - tangling out as usual into temporary files (so probably little
> - change there)
> - compare temporary file to true file (does emacs already have a diff
> - utility that could be used?)
> - overwrite true file if any changes
> - delete temporary files
next prev parent reply other threads:[~2011-11-18 20:17 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-18 13:17 Not overwriting unchanged source code files when tangling Holger Hoefling
2011-11-18 14:23 ` Brian Wightman
2011-11-18 16:46 ` Tom Prince
2011-11-18 17:14 ` Brian Wightman
2011-11-18 14:27 ` Sebastien Vauban
2011-11-18 17:02 ` Carsten Dominik
2011-11-18 17:28 ` Brian Wightman
2011-11-18 19:42 ` Eric Schulte
2011-11-18 20:10 ` Achim Gratz
2011-11-18 20:24 ` Eric Schulte
2011-11-19 0:49 ` Holger Hoefling
2011-11-18 19:01 ` Holger Hoefling
2011-11-18 19:32 ` Nick Dokos [this message]
2011-11-19 0:51 ` Holger Hoefling
2011-11-19 4:00 ` Nick Dokos
2011-11-19 6:58 ` Holger Hoefling
2011-11-19 18:32 ` Holger Hoefling
2011-11-22 21:17 ` Allen S. Rout
2011-11-22 21:43 ` Nick Dokos
2011-11-19 18:06 ` cberry
2011-11-18 19:51 ` Achim Gratz
-- strict thread matches above, loose matches on Subject: below --
2011-11-19 15:31 Rustom Mody
2011-11-19 15:51 ` Rustom Mody
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5701.1321644756@alphaville.americas.hpqcorp.net \
--to=nicholas.dokos@hp.com \
--cc=carsten.dominik@gmail.com \
--cc=emacs-orgmode@gnu.org \
--cc=hhoeflin@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.