Fix regressions caused by ismatrix definition change (partial fix bug #47036). * inputdlg.m: Test that linespec isnumeric. * uigetfile.m: Check that position property value isnumeric. * fminunc.m: Check that x0 isnumeric. * fsolve.m: Check that x0 isnumeric. * lsqnonneg.m: Check that inputs C & D are both isnumeric and ismatrix. * pqpnonneg.m: Check that inputs C & D are both isnumeric and ismatrix. * bicg.m: Check input A issquare. Rephrase error messages. * bicgstab.m: Check input A issquare. Rephrase error messages. * cgs.m: Check input A issquare. Rephrase error messages. * gmres.m: Check input A issquare. Rephrase error messages. Change BIST test to match new error message. * qmr.m: Check input A issquare. Rephrase error messages. * spconvert.m: Check nargin first. Simplify input validation. Wrap long error message to < 80 chars. * treeplot.m: Simplify input validation.

#! /bin/sh
#
# Copyright (C) 1999-2015 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/>.

SED=${SED:-'sed'}

$SED -n -e '/^BEGIN_DOC_STRING/{
  : loop
  N
  /END_DOC_STRING/b done
  b loop
  : done
  s/BEGIN_DOC_STRING//
  s/END_DOC_STRING//
  p
}'