1 ## Copyright (C) 2012 John W. Eaton
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
10 ## Octave is distributed in the hope that it will be useful, but
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Function File} {} ispref (@var{group}, @var{pref})
21 ## Return true if the named preference @var{pref} exists in the
22 ## preference group @var{group}.
24 ## The named preference group must be a character string.
26 ## The preference @var{pref} may be a character string or a cell array
27 ## of character strings.
29 ## If @var{pref} is not specified, return true if the preference
30 ## group @var{group} exists.
31 ## @seealso{getpref, addpref, setpref, rmpref}
36 function retval = ispref (group, pref)
39 retval = isfield (loadprefs (), group);
42 if (isfield (prefs, group))
44 if (ischar (pref) || iscellstr (pref))
45 retval = isfield (grp, pref);
58 %% Testing these functions will require some care to avoid wiping out
59 %% existing (or creating unwanted) preferences for the user running the