Implement a new function `directory-name-p'

* doc/lispref/files.texi (Relative File Names): Mention
`directory-name-p'.

* etc/NEWS: Mention directory-name-p.

(directory-name-p): New function.
(directory-files-recursively): Use it.

2 files changed, 9 insertions, 0 deletions

diff --git a/etc/ChangeLog b/etc/ChangeLog
index f56fb4ea683..5e02fced672 100644
--- a/etc/ChangeLog
+++ b/etc/ChangeLog
@@ -1,3 +1,7 @@
+2014-12-13  Lars Magne Ingebrigtsen  <larsi@gnus.org>
+
+        * NEWS: Mention directory-name-p.
+
 2014-12-09  Lars Magne Ingebrigtsen  <larsi@gnus.org>
 
         * NEWS: Mention directory-files-recursively.
diff --git a/etc/NEWS b/etc/NEWS
index 58a5836a1c0..58e4b0e2cf1 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -140,6 +140,11 @@ library function `ftw'.
 ** A new function `directory-files-recursively' returns all matching
 files (recursively) under a directory.
 
+** The new `directory-name-p' can be used to check whether a file
+name (as returned from, for instance, `file-name-all-completions' is
+a directory file name.  It returns non-nil if the last character in
+the name is a forward slash.
+
 
 * Editing Changes in Emacs 25.1