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From: Eric Schulte <schulte.eric@gmail.com>
To: Achim Gratz <Stromeko@nexgo.de>
Cc: emacs-orgmode@gnu.org
Subject: Re: [Babel] [Bug] Cache
Date: Fri, 06 Dec 2013 19:29:02 -0700	[thread overview]
Message-ID: <87ob4t2xxz.fsf@gmail.com> (raw)
In-Reply-To: 87k3fhkb1c.fsf@Rainer.invalid

[-- Attachment #1: Type: text/plain, Size: 471 bytes --]

Achim Gratz <Stromeko@nexgo.de> writes:

> Eric Schulte writes:
>> In that thread we agreed that the expansion of no-web references
>> *should* be included in code blocks for hashing, but no-one has had the
>> time to implement this.
> I think we may have discussed this before, but if you make the hashes
> dependent on the possibly recursive noweb expansions

What is a recursive noweb expansion?  I think of the following, which
will cause errors in any situation.

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: recursive.org --]
[-- Type: text/x-org, Size: 107 bytes --]

#+name: a
#+begin_src sh
  echo "hi <<b>>"

#+name: b
#+begin_src sh
  echo "hi <<a>>"

[-- Attachment #3: Type: text/plain, Size: 753 bytes --]

> this would require that all expansions be re-computed all the time or
> you would need to discern which of the expansions are "pure"
> (i.e. depend only on their arguments, functional-style), which have
> session semantics and which of the ones that have session semantics
> should possibly not be re-evaluated.  I'm not sure that opening this
> can of worms is worth the trouble.

I still (and I think this was my issue last time) don't see how noweb
expansions are more complicated than :var arguments.  That said I agree
that this is an edge case, and I certainly don't have time to make this
change (which you right could be complex) at the moment.


> Regards,
> Achim.

Eric Schulte
PGP: 0x614CA05D

      parent reply	other threads:[~2013-12-07  2:33 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-21 11:13 [Babel] [Bug] Cache Sebastien Vauban
2013-11-22 15:03 ` Eric Schulte
2013-12-02 15:46   ` Sebastien Vauban
2013-12-06 19:15     ` Eric Schulte
2013-12-06 19:57       ` Achim Gratz
2013-12-06 20:04         ` Sebastien Vauban
2013-12-07  2:29         ` Eric Schulte [this message]

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