From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Thu, 26 Jan 2017 18:07:00 +0000 (+0100)
Subject: Give a slight better error message in mml-minibuffer-read-file
X-Git-Tag: emacs-26.0.90~870^2~42
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=9fc67ae2dd49ab574d4858496c33fdd6c00f9c9b;p=emacs.git

Give a slight better error message in mml-minibuffer-read-file

* lisp/gnus/mml.el (mml-minibuffer-read-file): Give a slightly
better error message when the user enters nothing (bug#20480).
---

diff --git a/lisp/gnus/mml.el b/lisp/gnus/mml.el
index df541fbcccd..19c19decedd 100644
--- a/lisp/gnus/mml.el
+++ b/lisp/gnus/mml.el
@@ -1251,9 +1251,11 @@ If not set, `default-directory' will be used."
   (let* ((completion-ignored-extensions nil)
 	 (file (read-file-name prompt
 			       (or mml-default-directory default-directory)
-			       nil t)))
+			       "" t)))
     ;; Prevent some common errors.  This is inspired by similar code in
     ;; VM.
+    (when (zerop (length file))
+      (error "No file name entered"))
     (when (file-directory-p file)
       (error "%s is a directory, cannot attach" file))
     (unless (file-exists-p file)