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annotate scripts/strings/strcat.m @ 17281:bc924baa2c4e

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doc: Add new @qcode macro for code samples which are quoted. Macro handles options ("on") or properties ("position") more elegantly than @code{"text"}. * doc/interpreter/macros.texi: Add new @qcode macro. * doc/interpreter/tips.txi: Add documentation about @qcode macro. * doc/interpreter/basics.txi, doc/interpreter/container.txi, doc/interpreter/emacs.txi, doc/interpreter/errors.txi, doc/interpreter/eval.txi, doc/interpreter/expr.txi, doc/interpreter/external.txi, doc/interpreter/func.txi, doc/interpreter/grammar.txi, doc/interpreter/image.txi, doc/interpreter/install.txi, doc/interpreter/interp.txi, doc/interpreter/io.txi, doc/interpreter/matrix.txi, doc/interpreter/numbers.txi, doc/interpreter/oop.txi, doc/interpreter/package.txi, doc/interpreter/plot.txi, doc/interpreter/quad.txi, doc/interpreter/sparse.txi, doc/interpreter/strings.txi, doc/interpreter/system.txi, doc/interpreter/vectorize.txi, libinterp/corefcn/balance.cc, libinterp/corefcn/bitfcns.cc, libinterp/corefcn/cellfun.cc, libinterp/corefcn/conv2.cc, libinterp/corefcn/data.cc, libinterp/corefcn/debug.cc, libinterp/corefcn/defaults.cc, libinterp/corefcn/dirfns.cc, libinterp/corefcn/dlmread.cc, libinterp/corefcn/error.cc, libinterp/corefcn/file-io.cc, libinterp/corefcn/find.cc, libinterp/corefcn/gammainc.cc, libinterp/corefcn/graphics.cc, libinterp/corefcn/help.cc, libinterp/corefcn/hex2num.cc, libinterp/corefcn/input.cc, libinterp/corefcn/load-path.cc, libinterp/corefcn/load-save.cc, libinterp/corefcn/ls-oct-ascii.cc, libinterp/corefcn/lu.cc, libinterp/corefcn/luinc.cc, libinterp/corefcn/matrix_type.cc, libinterp/corefcn/oct-hist.cc, libinterp/corefcn/pager.cc, libinterp/corefcn/pr-output.cc, libinterp/corefcn/pt-jit.cc, libinterp/corefcn/qz.cc, libinterp/corefcn/rand.cc, libinterp/corefcn/regexp.cc, libinterp/corefcn/schur.cc, libinterp/corefcn/sighandlers.cc, libinterp/corefcn/sparse.cc, libinterp/corefcn/spparms.cc, libinterp/corefcn/str2double.cc, libinterp/corefcn/svd.cc, libinterp/corefcn/symtab.cc, libinterp/corefcn/syscalls.cc, libinterp/corefcn/toplev.cc, libinterp/corefcn/tril.cc, libinterp/corefcn/typecast.cc, libinterp/corefcn/utils.cc, libinterp/corefcn/variables.cc, libinterp/dldfcn/__init_fltk__.cc, libinterp/dldfcn/chol.cc, libinterp/dldfcn/colamd.cc, libinterp/dldfcn/fftw.cc, libinterp/dldfcn/qr.cc, libinterp/dldfcn/symbfact.cc, libinterp/octave-value/ov-base.cc, libinterp/octave-value/ov-fcn-handle.cc, libinterp/octave-value/ov-fcn-inline.cc, libinterp/octave-value/ov-java.cc, libinterp/octave-value/ov-range.cc, libinterp/octave-value/ov-struct.cc, libinterp/octave-value/ov-usr-fcn.cc, libinterp/parse-tree/oct-parse.in.yy, libinterp/parse-tree/pt-binop.cc, libinterp/parse-tree/pt-eval.cc, libinterp/parse-tree/pt-mat.cc, scripts/@ftp/ftp.m, scripts/deprecated/java_convert_matrix.m, scripts/deprecated/java_debug.m, scripts/deprecated/java_unsigned_conversion.m, scripts/deprecated/shell_cmd.m, scripts/general/dblquad.m, scripts/general/display.m, scripts/general/genvarname.m, scripts/general/idivide.m, scripts/general/interp1.m, scripts/general/interp2.m, scripts/general/interp3.m, scripts/general/interpn.m, scripts/general/isa.m, scripts/general/profexplore.m, scripts/general/profile.m, scripts/general/quadgk.m, scripts/general/randi.m, scripts/general/structfun.m, scripts/general/subsindex.m, scripts/general/triplequad.m, scripts/geometry/griddata.m, scripts/geometry/griddata3.m, scripts/geometry/griddatan.m, scripts/geometry/voronoi.m, scripts/help/help.m, scripts/help/lookfor.m, scripts/image/cmpermute.m, scripts/image/colormap.m, scripts/image/image.m, scripts/image/imagesc.m, scripts/image/imfinfo.m, scripts/image/imformats.m, scripts/image/imread.m, scripts/image/imshow.m, scripts/image/imwrite.m, scripts/image/ind2gray.m, scripts/image/lines.m, scripts/image/rgb2ind.m, scripts/image/spinmap.m, scripts/io/dlmwrite.m, scripts/io/strread.m, scripts/io/textread.m, scripts/io/textscan.m, scripts/java/javaclasspath.m, scripts/java/usejava.m, scripts/miscellaneous/bzip2.m, scripts/miscellaneous/computer.m, scripts/miscellaneous/copyfile.m, scripts/miscellaneous/debug.m, scripts/miscellaneous/dos.m, scripts/miscellaneous/edit.m, scripts/miscellaneous/gzip.m, scripts/miscellaneous/license.m, scripts/miscellaneous/mkoctfile.m, scripts/miscellaneous/movefile.m, scripts/miscellaneous/parseparams.m, scripts/miscellaneous/unix.m, scripts/optimization/fminbnd.m, scripts/optimization/fminsearch.m, scripts/optimization/fminunc.m, scripts/optimization/fsolve.m, scripts/optimization/fzero.m, scripts/optimization/glpk.m, scripts/optimization/lsqnonneg.m, scripts/optimization/optimset.m, scripts/optimization/pqpnonneg.m, scripts/pkg/pkg.m, scripts/plot/allchild.m, scripts/plot/ancestor.m, scripts/plot/area.m, scripts/plot/axis.m, scripts/plot/bar.m, scripts/plot/barh.m, scripts/plot/box.m, scripts/plot/caxis.m, scripts/plot/cla.m, scripts/plot/clabel.m, scripts/plot/clf.m, scripts/plot/close.m, scripts/plot/colorbar.m, scripts/plot/daspect.m, scripts/plot/ezmesh.m, scripts/plot/ezmeshc.m, scripts/plot/ezsurf.m, scripts/plot/ezsurfc.m, scripts/plot/findall.m, scripts/plot/findobj.m, scripts/plot/gcbo.m, scripts/plot/gcf.m, scripts/plot/gco.m, scripts/plot/grid.m, scripts/plot/guihandles.m, scripts/plot/hdl2struct.m, scripts/plot/hidden.m, scripts/plot/hold.m, scripts/plot/isonormals.m, scripts/plot/isosurface.m, scripts/plot/legend.m, scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m, scripts/plot/newplot.m, scripts/plot/orient.m, scripts/plot/pareto.m, scripts/plot/patch.m, scripts/plot/pbaspect.m, scripts/plot/pcolor.m, scripts/plot/plot.m, scripts/plot/print.m, scripts/plot/private/__add_default_menu__.m, scripts/plot/quiver.m, scripts/plot/quiver3.m, scripts/plot/refreshdata.m, scripts/plot/saveas.m, scripts/plot/scatter.m, scripts/plot/scatter3.m, scripts/plot/shading.m, scripts/plot/shrinkfaces.m, scripts/plot/slice.m, scripts/plot/stem.m, scripts/plot/stem3.m, scripts/plot/struct2hdl.m, scripts/plot/subplot.m, scripts/plot/surf.m, scripts/plot/surfc.m, scripts/plot/surfl.m, scripts/plot/tetramesh.m, scripts/plot/uigetfile.m, scripts/plot/uimenu.m, scripts/plot/uiputfile.m, scripts/plot/waterfall.m, scripts/plot/whitebg.m, scripts/plot/xlim.m, scripts/plot/ylim.m, scripts/plot/zlim.m, scripts/polynomial/conv.m, scripts/polynomial/polyout.m, scripts/polynomial/splinefit.m, scripts/set/ismember.m, scripts/set/powerset.m, scripts/set/setdiff.m, scripts/set/union.m, scripts/set/unique.m, scripts/signal/detrend.m, scripts/signal/filter2.m, scripts/signal/freqz.m, scripts/signal/periodogram.m, scripts/signal/spectral_adf.m, scripts/signal/spectral_xdf.m, scripts/sparse/eigs.m, scripts/sparse/svds.m, scripts/specfun/legendre.m, scripts/special-matrix/gallery.m, scripts/statistics/base/mean.m, scripts/statistics/base/moment.m, scripts/statistics/tests/cor_test.m, scripts/statistics/tests/kolmogorov_smirnov_test.m, scripts/statistics/tests/kolmogorov_smirnov_test_2.m, scripts/statistics/tests/kruskal_wallis_test.m, scripts/statistics/tests/prop_test_2.m, scripts/statistics/tests/sign_test.m, scripts/statistics/tests/t_test.m, scripts/statistics/tests/t_test_2.m, scripts/statistics/tests/t_test_regression.m, scripts/statistics/tests/u_test.m, scripts/statistics/tests/var_test.m, scripts/statistics/tests/welch_test.m, scripts/statistics/tests/wilcoxon_test.m, scripts/statistics/tests/z_test.m, scripts/statistics/tests/z_test_2.m, scripts/strings/base2dec.m, scripts/strings/index.m, scripts/strings/isstrprop.m, scripts/strings/mat2str.m, scripts/strings/regexptranslate.m, scripts/strings/rindex.m, scripts/strings/str2num.m, scripts/strings/strcat.m, scripts/strings/strjust.m, scripts/strings/strmatch.m, scripts/strings/validatestring.m, scripts/testfun/demo.m, scripts/testfun/example.m, scripts/testfun/test.m, scripts/time/addtodate.m, scripts/time/asctime.m, scripts/time/datestr.m, scripts/time/datetick.m, scripts/time/weekday.m, scripts/ui/errordlg.m, scripts/ui/helpdlg.m, scripts/ui/inputdlg.m, scripts/ui/listdlg.m, scripts/ui/msgbox.m, scripts/ui/questdlg.m, scripts/ui/warndlg.m: Use new @qcode macro.
author Rik <rik@octave.org>
date Mon, 19 Aug 2013 20:46:38 -0700
parents 5d3a684236b0
children 1c89599167a6
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72c96de7a403 maint: update copyright notices for 2012
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1 ## Copyright (C) 1994-2012 John W. Eaton
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2 ## Copyright (C) 2009 Jaroslav Hajek
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} strcat (@var{s1}, @var{s2}, @dots{})
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22 ## Return a string containing all the arguments concatenated
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23 ## horizontally. If the arguments are cells strings, @code{strcat}
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24 ## returns a cell string with the individual cells concatenated.
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25 ## For numerical input, each element is converted to the
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26 ## corresponding ASCII character. Trailing white space for each of
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27 ## the inputs (@var{s1}, @var{s2}, @dots{}) is eliminated before they
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28 ## are concatenated.
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29 ##
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30 ## For example:
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31 ##
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32 ## @example
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33 ## @group
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34 ## strcat ("|", " leading space is preserved", "|")
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35 ## @result{} | leading space is perserved|
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36 ## @end group
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37 ## @end example
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38 ##
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39 ## @example
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40 ## @group
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41 ## strcat ("|", "trailing space is eliminated ", "|")
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42 ## @result{} |trailing space is eliminated|
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43 ## @end group
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44 ## @end example
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45 ##
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46 ## @example
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47 ## @group
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48 ## strcat ("homogeneous space |", " ", "| is also eliminated")
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49 ## @result{} homogeneous space || is also eliminated
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50 ## @end group
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51 ## @end example
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52 ##
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53 ## @example
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54 ## @group
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55 ## s = [ "ab"; "cde" ];
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56 ## strcat (s, s, s)
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57 ## @result{}
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58 ## "ab ab ab "
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59 ## "cdecdecde"
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60 ## @end group
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61 ## @end example
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62 ##
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63 ## @example
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64 ## @group
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65 ## s = @{ "ab"; "cde" @};
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66 ## strcat (s, s, s)
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67 ## @result{}
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68 ## @{
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69 ## [1,1] = ababab
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70 ## [2,1] = cdecdecde
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71 ## @}
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72 ## @end group
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73 ## @end example
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74 ##
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75 ## @seealso{cstrcat, char, strvcat}
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76 ## @end deftypefn
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78 ## Author: jwe
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79
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80 function st = strcat (varargin)
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81
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82 if (nargin > 0)
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83 if (nargin == 1)
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84 st = varargin{1};
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85 elseif (nargin > 1)
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86 ## Convert to cells of strings
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87 uo = "uniformoutput";
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88 reals = cellfun ("isreal", varargin);
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89 if (any (reals))
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90 varargin(reals) = cellfun ("char", varargin(reals), uo, false);
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91 endif
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92 chars = cellfun ("isclass", varargin, "char");
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93 allchar = all (chars);
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94 varargin(chars) = cellfun ("cellstr", varargin(chars), uo, false);
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95 if (! all (cellfun ("isclass", varargin, "cell")))
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96 error ("strcat: inputs must be strings or cells of strings");
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97 endif
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98
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99 ## We don't actually need to bring all cells to common size, because
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100 ## cellfun can now expand scalar cells.
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101 err = common_size (varargin{:});
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102
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103 if (err)
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104 error ("strcat: arguments must be the same size, or be scalars");
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105 endif
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106
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107 ## Cellfun handles everything for us.
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108 st = cellfun ("horzcat", varargin{:}, uo, false);
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109
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110 if (allchar)
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111 ## If all inputs were strings, return strings.
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112 st = char (st);
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113 endif
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114 endif
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115 else
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116 print_usage ();
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117 endif
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118
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119 endfunction
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120
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121 ## test the dimensionality
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122 ## 1d
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123 %!assert (strcat ("ab ", "ab "), "abab")
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124 %!assert (strcat ({"ab "}, "ab "), {"ab ab"})
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125 %!assert (strcat ("ab ", {"ab "}), {"abab "})
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126 %!assert (strcat ({"ab "}, {"ab "}), {"ab ab "})
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127 %!assert (strcat ("", "ab"), "ab")
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128 %!assert (strcat ("", {"ab"}, {""}), {"ab"})
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129 ## 2d
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130 %!assert (strcat (["ab ";"cde"], ["ab ";"cde"]), ["abab ";"cdecde"])
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131
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132 ## test for deblanking implied trailing spaces of character input
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133 %!assert (strcat ("foo", "bar"), "foobar")
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134 %!assert (strcat (["a"; "bb"], ["foo"; "bar"]), ["afoo "; "bbbar"])
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135
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136 ## test for mixing character and cell inputs
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137 %!assert (strcat ("a", {"bc", "de"}, "f"), {"abcf", "adef"})
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138
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139 ## test for scalar strings with vector strings
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140 %!assert (strcat (["a"; "b"], "c"), ["ac"; "bc"])
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141
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142 ## test with cells with strings of differing lengths
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143 %!assert (all (strcmp (strcat ({"a", "bb"}, "ccc"), {"accc", "bbccc"})))
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144 %!assert (all (strcmp (strcat ("a", {"bb", "ccc"}), {"abb", "accc"})))
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145
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146 %!assert (strcat (1, 2), strcat (char (1), char (2)))
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147 %!assert (strcat ("", 2), strcat ([], char (2)))
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148
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149 %!error strcat ()
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150