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

[Ruijie Yu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Hi,

>-(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))
>+(defcustom hfy-exclude-file-rules
>+  '("\\.flc$"
>+    "/CVS/.*"
>+    ".*~"
>+    "\\.git/.*")
>+  "Define some regular expressions to exclude files"
>+  :tag "exclude-rules"
>+  :type '(list string))

For the third entry, shouldn't it be ".*~$" instead, to indicate that
"~" is the last character?

For the fourth entry, currently it would match against the file name
"ROOT/hello.git/foo".  In addition, for git submodules, ".git" is a
regular file instead of a directory.  Maybe something like this is what
you want:

    (rx "/.git" (opt "/" (0+ any)) line-end)

or in raw regexp: "/\\.git\\(?:/.*\\)?$"

Also, in this change, we are dropping the requirement that the found
file are actually files, whereas we used to say "-type f".  Is this
change fine?

> (defun hfy-list-files (directory)
>   "Return a list of files under DIRECTORY.
> Strips any leading \"./\" from each filename."
>-  ;;(message "hfy-list-files");;DBUG
>+  ;;(message "hfy-list-files");;DEBUG
>   ;; FIXME: this changes the dir of the current buffer.  Is that right??
>   (cd directory)
>-  (mapcar (lambda (F) (if (string-match "^./\\(.*\\)" F) (match-string 1 F) F))
>-          (split-string (shell-command-to-string hfy-find-cmd))) )
>+  (remove-if (lambda (f) (seq-some (lambda (r)
>+                                     (string-match r f)) hfy-exclude-file-rules))
>+             (directory-files-recursively "." ".*")))

We should change `remove-if' into `cl-remove-if' because both "cl.el"
and the alias `remove-if' are deprecated.

Best,


RY