Mercurial > octave
view libinterp/corefcn/display.cc @ 27477:b470734a025e
Return an empty string from rats when input is empty (bug #57004).
* pr-output.cc (Frats): Use isempty() to detect special case of input early and
immediately return an empty string. Add BIST test for bug #57004.
author | Rik <rik@octave.org> |
---|---|
date | Sat, 05 Oct 2019 14:04:36 -0700 |
parents | 1565c39aa940 |
children | b442ec6dda5c |
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/* Copyright (C) 2009-2019 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 <https://www.gnu.org/licenses/>. */ #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include "singleton-cleanup.h" #include "cdisplay.h" #include "defun.h" #include "display.h" #include "error.h" #include "interpreter.h" #include "ov.h" #include "ovl.h" namespace octave { void display_info::initialize (void) { int avail = 0; const char *msg = octave_get_display_info (nullptr, &m_ht, &m_wd, &m_dp, &m_rx, &m_ry, &avail); m_dpy_avail = avail; if (msg) m_msg = msg; } } DEFMETHOD (have_window_system, interp, , , doc: /* -*- texinfo -*- @deftypefn {} {} have_window_system () Return true if a window system is available (X11, Windows, or Apple OS X) and false otherwise. @seealso{isguirunning} @end deftypefn */) { octave::display_info& dpy_info = interp.get_display_info (); return ovl (dpy_info.display_available ()); }