Dired: Handle posix wildcards in directory part

Allow Dired to handle calls like
\(dired \"~/foo/*/*.el\"), that is, with wildcards within
the directory part of the file argument (Bug#27631).
* lisp/files.el (insert-directory-wildcard-in-dir-p): New predicate.
(insert-directory-clean): New defun extracted from insert-directory.
(insert-directory)
* lisp/dired.el (dired-internal-noselect)
(dired-insert-directory): Use the new predicate; when it's true,
handle the directory wildcards with a shell call.
* lisp/eshell/em-ls.el (eshell-ls-use-in-dired): Add/remove both advices.
(eshell-ls-unload-hook): New defun.  Use it in
eshell-ls-unload-hook instead of an anonymous function.
(eshell-ls--dired)
* lisp/ls-lisp.el (ls-lisp--dired):
Advice dired to handle wildcards in the directory part with both
eshell-ls and ls-lisp.
* etc/NEWS: Announce it.
* doc/emacs/dired.texi (Dired Enter): Update manual.
* test/lisp/dired-tests.el (dired-test-bug27631): Add test.

1 files changed, 38 insertions, 0 deletions

diff --git a/test/lisp/dired-tests.el b/test/lisp/dired-tests.el
index 43a21e1accb..cd58edaa3f8 100644
--- a/test/lisp/dired-tests.el
+++ b/test/lisp/dired-tests.el
@@ -277,5 +277,43 @@
       (customize-set-variable 'eshell-ls-use-in-dired orig)
       (and (buffer-live-p buf) (kill-buffer)))))
 
+(ert-deftest dired-test-bug27631 ()
+  "Test for http://debbugs.gnu.org/27631 ."
+  (let* ((dir (make-temp-file "bug27631" 'dir))
+         (dir1 (expand-file-name "dir1" dir))
+         (dir2 (expand-file-name "dir2" dir))
+         (default-directory dir)
+         buf)
+    (unwind-protect
+        (progn
+          (make-directory dir1)
+          (make-directory dir2)
+          (with-temp-file (expand-file-name "a.txt" dir1))
+          (with-temp-file (expand-file-name "b.txt" dir2))
+          (setq buf (dired (expand-file-name "dir*/*.txt" dir)))
+          (dired-toggle-marks)
+          (should (cdr (dired-get-marked-files)))
+          ;; Must work with ls-lisp ...
+	  (require 'ls-lisp)
+          (kill-buffer buf)
+	  (setq default-directory dir)
+	  (let (ls-lisp-use-insert-directory-program)
+            (setq buf (dired (expand-file-name "dir*/*.txt" dir)))
+            (dired-toggle-marks)
+            (should (cdr (dired-get-marked-files))))
+	  ;; ... And with em-ls as well.
+	  (kill-buffer buf)
+	  (setq default-directory dir)
+	  (unload-feature 'ls-lisp 'force)
+	  (require 'em-ls)
+	  (let ((orig eshell-ls-use-in-dired))
+	    (customize-set-value 'eshell-ls-use-in-dired t)
+	    (setq buf (dired (expand-file-name "dir*/*.txt" dir)))
+	    (dired-toggle-marks)
+	    (should (cdr (dired-get-marked-files)))))
+      (delete-directory dir 'recursive)
+      (when (buffer-live-p buf) (kill-buffer buf)))))
+
+
 (provide 'dired-tests)
 ;; dired-tests.el ends here