bug#60562: [PATCH] Fix split-string error if there is a space in the filename.

[Eli Zaretskii]

> Cc: 60562@debbugs.gnu.org
> Date: Sat, 7 Jan 2023 17:42:35 +0800
> From: lux <lx@shellcodes.org>
> 
> On Fri, 06 Jan 2023 10:48:43 +0100
> Robert Pluim <rpluim@gmail.com> wrote:
> 
> > You can avoid the issue (and improve portability) by using
> > `directory-files-recursively' instead of `find'
> 
> But `hfy-find-cmd' is a configurable variable:
> 
> (defcustom hfy-find-cmd
>   "find . -type f \\! -name \\*~ \\! -name \\*.flc \\! -path
> \\*/CVS/\\*" "Find command used to harvest a list of files to attempt
> to fontify." :tag   "find-command"
>   :type  '(string))

We can convert that to a customizable regexp, and maybe to a predicate
function if a simple regexp won't do.

> I don't know if using `directory-files-recursively' has other effects.

Why would that bother us?  This is used to find the files under a
given directory, avoiding some files which we know will not be wanted.