Document vconcat and the empty vector (Bug#16246).

* sequences.texi (Vector Functions):
Document behavior better when the result is empty.

2 files changed, 8 insertions, 4 deletions

diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog
index 2422ee5cc09..124ee8fe1dd 100644
--- a/doc/lispref/ChangeLog
+++ b/doc/lispref/ChangeLog
@@ -1,5 +1,9 @@
 2014-01-05  Paul Eggert  <eggert@cs.ucla.edu>
 
+	Document vconcat and the empty vector (Bug#16246).
+	* sequences.texi (Vector Functions):
+	Document behavior better when the result is empty.
+
 	Document behavior of (string-to-number "+@") (Bug#16293).
 	* strings.texi (String Conversion): Document behavior of
 	string-to-number on invalid strings that begin with "+", too.
diff --git a/doc/lispref/sequences.texi b/doc/lispref/sequences.texi
index 362737f9956..52a1cf5e32c 100644
--- a/doc/lispref/sequences.texi
+++ b/doc/lispref/sequences.texi
@@ -471,11 +471,11 @@ each initialized to @var{object}.
 @cindex copying vectors
 This function returns a new vector containing all the elements of
 @var{sequences}.  The arguments @var{sequences} may be true lists,
-vectors, strings or bool-vectors.  If no @var{sequences} are given, an
-empty vector is returned.
+vectors, strings or bool-vectors.  If no @var{sequences} are given,
+the empty vector is returned.
 
-The value is a newly constructed vector that is not @code{eq} to any
-existing vector.
+The value is either the empty vector, or is a newly constructed
+nonempty vector that is not @code{eq} to any existing vector.
 
 @example
 @group