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bug#10292: following symlinks in byte-recompile-directory

From: Lars Ingebrigtsen
Subject: bug#10292: following symlinks in byte-recompile-directory
Date: Sat, 17 Aug 2019 22:53:06 -0700
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Sam Aaron <address@hidden> writes:

> I noticed that the implementation of byte-recompile-directory has
> specific code to not allow symlinks to be followed. As I use symlinks
> to structure my ~/.emacs.d directory, this means this fn doesn't work
> for me. Is there any specific motivation for not having the following
> signature:
> (byte-recompile-directory-sl DIRECTORY &optional ARG FORCE FOLLOW-SYMLINKS)

(I'm going through old bug reports that unfortunately have gotten no
responses yet.)

Not following symlinks introduced in 1993, but the commit message
doesn't explain why:

commit e9681c45f9ffd2819410b763338ba58b0b892b78
Author: Richard M. Stallman <address@hidden>
Date:   Thu Dec 23 03:37:27 1993 +0000

    (byte-compile-dest-file): If FILENAME is not recognized, append .elc to it.
    (byte-recompile-directory): Don't treat symlinks as dirs.
    (batch-byte-recompile-directory): Add autoload cookie.

Adding a parameter to the function to follow symlinks seems pretty
harmless, and seems somewhat useful, so I think it should be added.
Does anybody object to that?

(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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