From: Dmitry Gutov <dgutov@yandex.ru>
Date: Mon, 22 Jun 2020 13:58:02 +0000 (+0300)
Subject: project-switch-to-buffer: Improve Ido compatibility
X-Git-Tag: emacs-28.0.90~7111
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=bea5eb77b3170203424179274bf26b9ce70de807;p=emacs.git

project-switch-to-buffer: Improve Ido compatibility

* lisp/progmodes/project.el (project-switch-to-buffer):
Check that the entry contains a non-nil CDR.
---

diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
index 60abf54b2bb..2f213dab8b1 100644
--- a/lisp/progmodes/project.el
+++ b/lisp/progmodes/project.el
@@ -810,7 +810,8 @@ is inside the directory hierarchy of the project's root."
          (predicate
           (lambda (buffer)
             ;; BUFFER is an entry (BUF-NAME . BUF-OBJ) of Vbuffer_alist.
-            (and (not (eq (cdr buffer) current-buffer))
+            (and (cdr buffer)
+                 (not (eq (cdr buffer) current-buffer))
                  (when-let ((file (buffer-local-value 'default-directory
                                                       (cdr buffer))))
                    (file-in-directory-p file root))))))