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diff --git a/octave_packages/m/strings/isstrprop.m b/octave_packages/m/strings/isstrprop.m
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+## Copyright (C) 2008-2012 John W. Eaton
+##
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 3 of the License, or (at
+## your option) any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} isstrprop (@var{str}, @var{prop})
+## Test character string properties.  For example:
+##
+## @example
+## @group
+## isstrprop ("abc123", "alpha")
+## @result{} [1, 1, 1, 0, 0, 0]
+## @end group
+## @end example
+##
+## If @var{str} is a cell array, @code{isstrpop} is applied recursively
+## to each element of the cell array.
+##
+## Numeric arrays are converted to character strings.
+##
+## The second argument @var{prop} must be one of
+##
+## @table @asis
+## @item "alpha"
+## True for characters that are alphabetic (letters).
+##
+## @item "alnum"
+## @itemx "alphanum"
+## True for characters that are alphabetic or digits.
+##
+## @item "lower"
+## True for lowercase letters.
+##
+## @item "upper"
+## True for uppercase letters.
+##
+## @item "digit"
+## True for decimal digits (0-9).
+##
+## @item "xdigit"
+## True for hexadecimal digits (@nospell{a-fA-F0-9}).
+##
+## @item "space"
+## @itemx "wspace"
+## True for whitespace characters (space, formfeed, newline, carriage
+## return, tab, vertical tab).
+##
+## @item "punct"
+## True for punctuation characters (printing characters except space
+## or letter or digit).
+##
+## @item "cntrl"
+## True for control characters.
+##
+## @item "graph"
+## @itemx "graphic"
+## True for printing characters except space.
+##
+## @item "print"
+## True for printing characters including space.
+##
+## @item "ascii"
+## True for characters that are in the range of ASCII encoding.
+##
+## @end table
+##
+## @seealso{isalpha, isalnum, islower, isupper, isdigit, isxdigit,
+## isspace, ispunct, iscntrl, isgraph, isprint, isascii}
+## @end deftypefn
+
+function retval = isstrprop (str, prop)
+
+  if (nargin != 2)
+    print_usage ();
+  endif
+
+  switch (prop)
+    case "alpha"
+      retval = isalpha (str);
+    case {"alnum", "alphanum"}
+      retval = isalnum (str);
+    case "ascii"
+      retval = isascii (str);
+    case "cntrl"
+      retval = iscntrl (str);
+    case "digit"
+      retval = isdigit (str);
+    case {"graph", "graphic"}
+      retval = isgraph (str);
+    case "lower"
+      retval = islower (str);
+    case "print"
+      retval = isprint (str);
+    case "punct"
+      retval = ispunct (str);
+    case {"space", "wspace"}
+      retval = isspace (str);
+    case "upper"
+      retval = isupper (str);
+    case "xdigit"
+      retval = isxdigit (str);
+    otherwise
+      error ("isstrprop: invalid string property");
+  endswitch
+
+endfunction
+
+
+%!assert (isstrprop ("abc123", "alpha"), logical ([1, 1, 1, 0, 0, 0]))
+%!assert (isstrprop ("abc123", "digit"), logical ([0, 0, 0, 1, 1, 1]))
+%!assert (isstrprop ("Hello World", "wspace"), isspace ("Hello World"))
+%!assert (isstrprop ("Hello World", "graphic"), isgraph ("Hello World"))
+%!assert (isstrprop (char ("AbC", "123"), "upper"), logical ([1 0 1; 0 0 0]))
+%!assert (isstrprop ({"AbC", "123"}, "lower"), {logical([0 1 0]), logical([0 0 0])})
+
+%%Input Validation
+%!error isstrprop ()
+%!error isstrprop ("abc123")
+%!error isstrprop ("abc123", "alpha", "alpha")
+%!error <invalid string property> isstrprop ("abc123", "foo")
+