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Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-
From: |
Stuart D. Herring |
Subject: |
Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history] |
Date: |
Thu, 11 May 2006 10:46:30 -0700 (PDT) |
User-agent: |
SquirrelMail/1.4.3a-11.EL3 |
> The use of symbols (as opposed to file names) here has only just been
> introduced into Emacs (sometime in Emacs 22), so there are many millions
> of (eval-after-load "foo" ....) forms in existing source throughout the
> Emacs universe. We need to stay compatible with that source.
Yes, I realize that. I was just being dumb and talking before reading; I
see now that exactly what I was suggesting is already implemented in
parallel with the filename system. It seems to me that the simple way to
handle the real problem (rather than the one I fabricated) is to
fully-canonicalize (find real file name, find absolute file name, chase
symlinks) the arguments to both `eval-after-load' and `load' and compare
them (that is, use them to read/write the alist) afterwards. But could
there be a problem where preloaded files didn't match on a different
machine? If so, it might make sense to express the file names relative to
the entry of `load-path' that let them be found. Of course, then you
couldn't chase symlinks. Maybe during preloading `load-history' should
get the short names (e.g., "font-lock", "simple") of loaded files, and
then at real startup do the canonicalization before loading anything that
would need to use `eval-after-load'? Since it'd only be preloaded files,
customizations to `load-path' would probably be irrelevant, so it would be
okay to resolve them before loading .emacs.
Apologies if this is uneducated rambling; I'm not too familiar with this
feature.
Davis
--
This product is sold by volume, not by mass. If it appears too dense or
too sparse, it is because mass-energy conversion has occurred during
shipping.
- Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Alan Mackenzie, 2006/05/10
- FIXED!! Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Alan Mackenzie, 2006/05/14
- Re: FIXED!! Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Richard Stallman, 2006/05/15
- Re: FIXED!! Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Alan Mackenzie, 2006/05/21
- Re: FIXED!! Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Richard Stallman, 2006/05/21
- Re: FIXED!! Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Alan Mackenzie, 2006/05/23
- Re: FIXED!! Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Andreas Schwab, 2006/05/23
- Re: FIXED!! Re: Clarification of eval-after-load [was: Problem mit symlinks, locate-library and load-history], Alan Mackenzie, 2006/05/23
- Re: FIXED!! Re: Clarification of eval-after-load, Stefan Monnier, 2006/05/23