From: Jim Porter <jporterbugs@gmail.com>
Date: Fri, 4 Aug 2023 20:01:35 +0000 (-0700)
Subject: Fix handling of 'byte-compile-ignore-files' when nil
X-Git-Tag: emacs-29.1.90~252
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=1e8322bb26e4945de460780168732250bbd083d0;p=emacs.git

Fix handling of 'byte-compile-ignore-files' when nil

Before this fix, when 'byte-compile-ignore-files' was nil,
'byte-recompile-directory' would ignore every file (bug#64985).

* lisp/emacs-lisp/bytecomp.el (byte-recompile-directory): Handle case
when 'byte-compile-ignore-files' is nil.
---

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 65ccb60726f..d093d95a775 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1923,7 +1923,9 @@ also be compiled."
     (let ((directories (list default-directory))
 	  (default-directory default-directory)
           (ignore-files-regexp
-           (mapconcat #'identity byte-compile-ignore-files "\\|"))
+           (if byte-compile-ignore-files
+               (mapconcat #'identity byte-compile-ignore-files "\\|")
+             regexp-unmatchable))
 	  (skip-count 0)
 	  (fail-count 0)
 	  (file-count 0)