File fix-octave9-line-continuation.patch of Package octave-forge-vrml

Description: Adjust ode for Octave 9
 The continuation lines with '\' has been deprecated since Octave 7.
 In Octave 9, only '...' is allowed.
Author: Rafael Laboissière <rafael@debian.org>
Forwarded: no
Last-Update: 2024-02-13

--- octave-vrml-1.0.13.orig/inst/best_dir_cov.m
+++ octave-vrml-1.0.13/inst/best_dir_cov.m
@@ -88,10 +88,10 @@ tmp = zeros(D,D*P) ;
 				# wrt. d  and  x
 for i=1:D,
   
-  ## d2wx(W+i,(i-1)*P+1:i*P) = \
+  ## d2wx(W+i,(i-1)*P+1:i*P) = ...
   ##    2*x'*(kron(y(i,:))
-  d2wx(W+i,:) =                        \
-      2*x'*kron(y(i,:),kron(d,isig)) - \
+  d2wx(W+i,:) =                        ...
+      2*x'*kron(y(i,:),kron(d,isig)) - ...
       w'*a'*isig*kron(y(i,:),eye(P)) ;
 end
 
--- octave-vrml-1.0.13.orig/inst/save_vrml.m
+++ octave-vrml-1.0.13/inst/save_vrml.m
@@ -54,15 +54,15 @@ l_direction = [0.57735  -0.57735   0.577
 
 bg_node = sprintf (["Background {\n",...
 		    "  skyColor    %8.3g %8.3g %8.3g\n",...
-		    "}\n"],\
+		    "}\n"],...
 		   bg_col);
 bg_node = "";
 
-lightstr = sprintf (["PointLight {\n",\
-		     "  intensity         %8.3g\n",\
-		     "  ambientIntensity  %8.3g\n",\
-		     "  direction         %8.3g %8.3g %8.3g\n",\
-		     "}\n"],\
+lightstr = sprintf (["PointLight {\n",...
+		     "  intensity         %8.3g\n",...
+		     "  ambientIntensity  %8.3g\n",...
+		     "  direction         %8.3g %8.3g %8.3g\n",...
+		     "}\n"],...
 		    l_intensity, l_ambientIntensity, l_direction);
 lightstr = "";
 
--- octave-vrml-1.0.13.orig/inst/test_moving_surf.m
+++ octave-vrml-1.0.13/inst/test_moving_surf.m
@@ -59,7 +59,7 @@ if 1
 
   s4 = vrml_anim ("Coordinate",[a,b,a],"foo.set_point",[0 0.5 1],tn);
 
-  s3 = vrml_faces ([-1 -1 1 1;-1 1 1 -1;0.1 0.1 0.1 0.1],\
+  s3 = vrml_faces ([-1 -1 1 1;-1 1 1 -1;0.1 0.1 0.1 0.1],...
 				   {[1 2 3 4]},"tran",0.4,"col",[0.9 0.4 0.4]);
 
   vrml_browse ([s1,s2,s3,s4])
--- octave-vrml-1.0.13.orig/inst/test_vmesh.m
+++ octave-vrml-1.0.13/inst/test_vmesh.m
@@ -46,14 +46,14 @@ vmesh (z);
 
 printf ("Press a key.\n"); pause;
 
-printf (["The same surface, with checkered stripes ",\
+printf (["The same surface, with checkered stripes ",...
 	 "(see the 'checker' option).\n"]);
 
 vmesh (z,"checker",-[6,5]);
 
 printf ("Press a key.\n"); pause;
 
-printf (["The same surface, with z-dependent coloring (see 'zrb', 'zgrey'\n",\
+printf (["The same surface, with z-dependent coloring (see 'zrb', 'zgrey'\n",...
 	 "  and 'zcol' options)\n"]);
 
 vmesh (z,"zrb");
--- octave-vrml-1.0.13.orig/inst/test_vrml_faces.m
+++ octave-vrml-1.0.13/inst/test_vrml_faces.m
@@ -36,7 +36,7 @@ if 1
 
   printf ("Going to show a tetrahedron\n");
 
-  printf (["\n     If nothing appears, it may be due to problems",\
+  printf (["\n     If nothing appears, it may be due to problems",...
 	   "\n     with your FreeWRL installation\n"]);
   vrml_browse ([slight, s1]);
   printf ("Press a key in this terminal when done\n");pause;
@@ -47,7 +47,7 @@ if 1
 
   printf ("Going to show almost the same tetrahedron\n");
 
-  printf (["\n     If nothing appears, it may be due to problems",\
+  printf (["\n     If nothing appears, it may be due to problems",...
 	   "\n     with your FreeWRL installation\n"]);
   vrml_browse ([slight, s1]);
   printf ("Press a key in this terminal when done\n");pause;
@@ -104,15 +104,15 @@ if 0
   s1 = vrml_faces (x, trg, "tex",texfile,"imsz",[H,W]);
   s2 = vrml_faces (x, trg, "tex",texfile);
 
-  printf (["Tetrahedrons should appear like (R=red, G=green, B=blue)\n\n",\
-	   "              R 2\n",\
-	   "               /\n",\
-	   "              / G\n",\
-	   "     G     B /\n",\
-	   "   3--------4 B\n",\
-	   "     R     B \\\n",\
-	   "              \\ R\n",\
-	   "             G \\\n",\
+  printf (["Tetrahedrons should appear like (R=red, G=green, B=blue)\n\n",...
+	   "              R 2\n",...
+	   "               /\n",...
+	   "              / G\n",...
+	   "     G     B /\n",...
+	   "   3--------4 B\n",...
+	   "     R     B \\\n",...
+	   "              \\ R\n",...
+	   "             G \\\n",...
 	   "                 1\n"]);
   
   vrml_browse ([slight, s1, vrml_transfo(s2,[2,0,0])]);
--- octave-vrml-1.0.13.orig/inst/vmesh.m
+++ octave-vrml-1.0.13/inst/vmesh.m
@@ -108,7 +108,7 @@ surf_args = {x,y,z};	# Arguments that'll
 
 if numel (varargin)
 
-  op1 = [" tran col checker creaseAngle emit colorPerVertex tex zcol  frame ",\
+  op1 = [" tran col checker creaseAngle emit colorPerVertex tex zcol  frame ",...
 	 " level lcol ltran bwid "];
   op0 = " smooth zgray zrb normalize steps bars ";
 
@@ -117,11 +117,11 @@ if numel (varargin)
   opts = read_options (varargin,"op0",op0,"op1",op1,"default",df);
 
 				# Identify options for vrml_surf()
-#   all_surf_opts  = list ("tran", "col", "checker", "creaseAngle", "emit", \
-# 			 "colorPerVertex", "smooth", "tex",\
+#   all_surf_opts  = list ("tran", "col", "checker", "creaseAngle", "emit", ...
+# 			 "colorPerVertex", "smooth", "tex",...
 # 			 "zgray","zrb","zcol");
-  all_surf_opts  = {"tran", "col", "checker", "creaseAngle", "emit", \
-		    "colorPerVertex", "smooth", "steps", "bars", "bwid", "tex",\
+  all_surf_opts  = {"tran", "col", "checker", "creaseAngle", "emit", ...
+		    "colorPerVertex", "smooth", "steps", "bars", "bwid", "tex",...
 		    "zgray","zrb","zcol"};
 
   for i = 1:length(all_surf_opts)
@@ -187,16 +187,16 @@ pt2 = pts(:,ii); x2 = x(ii); y2 = y(ii);
 
 # pl = [pl1 pl2];
 
-pl = [vrml_DirectionalLight("direction",[-1,-1,-1],"intensity",0.75),\
-      vrml_DirectionalLight("direction",[-1, 1,-1],"intensity",0.5),\
-      vrml_DirectionalLight("direction",[ 1,-1,-1],"intensity",0.5),\
-      vrml_DirectionalLight("direction",[ 1, 1,-1],"intensity",0.33),\
+pl = [vrml_DirectionalLight("direction",[-1,-1,-1],"intensity",0.75),...
+      vrml_DirectionalLight("direction",[-1, 1,-1],"intensity",0.5),...
+      vrml_DirectionalLight("direction",[ 1,-1,-1],"intensity",0.5),...
+      vrml_DirectionalLight("direction",[ 1, 1,-1],"intensity",0.33),...
       vrml_DirectionalLight("direction",[ 0, 0, 1],"intensity",0.5)];
 
-#  distance = max ([max (x(:)) - min (x(:)),\
-#  		 max (y(:)) - min (y(:)),\
+#  distance = max ([max (x(:)) - min (x(:)),...
+#  		 max (y(:)) - min (y(:)),...
 #  		 max (z(:)) - min (z(:))])
-#  vp = vrml_Viewpoint  ("orientation", [1 0 0 -pi/6],\
+#  vp = vrml_Viewpoint  ("orientation", [1 0 0 -pi/6],...
 #  		      "position",    distance*[0 0 5]);
 
 minpts = min (pt2');
@@ -205,7 +205,7 @@ medpts = (minpts + maxpts)/2;
 ptssz  = (maxpts - minpts);
 ptssz  = max (ptssz, max (ptssz/10));
 
-if frame, fr = vrml_frame (minpts-ptssz/10,\
+if frame, fr = vrml_frame (minpts-ptssz/10,...
 			   "scale", ptssz * 1.2, "col",(ones(3)+eye(3))/2);
 else      fr = "";
 end
@@ -235,10 +235,10 @@ if ! isempty (level)
   if prod (size (ltran)) == 1    , ltran = ltran*ones(1,nlev); end
   
   for i = 1:nlev
-    slevel = [slevel, \
-	      vrml_parallelogram([xmin     xmin     xmax     xmax;\
-				  ymin     ymax     ymax     ymin;\
-				  level(i) level(i) level(i) level(i)],\
+    slevel = [slevel, ...
+	      vrml_parallelogram([xmin     xmin     xmax     xmax;...
+				  ymin     ymax     ymax     ymin;...
+				  level(i) level(i) level(i) level(i)],...
 				 "col",lcol(i,:),"tran",ltran(i))];
   end
 end
--- octave-vrml-1.0.13.orig/inst/vrml_DirectionalLight.m
+++ octave-vrml-1.0.13/inst/vrml_DirectionalLight.m
@@ -39,10 +39,10 @@ for k=1:2:nargin,
    hash = setfield(hash,varargin{k:k+1}); 
 end
 
-tpl = struct ("ambientIntensity", "%8.3f",\
-	      "intensity",        "%8.3f",\
-	      "direction",        "%8.3f",\
-	      "on",               "%s",\
+tpl = struct ("ambientIntensity", "%8.3f",...
+	      "intensity",        "%8.3f",...
+	      "direction",        "%8.3f",...
+	      "on",               "%s",...
 	      "color",            "%8.3f %8.3f %8.3f");
 
 body = "";
@@ -55,7 +55,7 @@ for [val,key] = hash,
       error (sprintf ("vrml_PointLight : unknown field '%s'",key));
     end
 
-    body = [body,\
+    body = [body,...
 	    sprintf("   %-20s   %s\n",key,
 		     sprintf(getfield (tpl,key), val))];
   end
--- octave-vrml-1.0.13.orig/inst/vrml_PointLight.m
+++ octave-vrml-1.0.13/inst/vrml_PointLight.m
@@ -40,12 +40,12 @@ function s = vrml_PointLight (varargin)
 if mod(nargin,2) != 0, print_usage; end
 h = struct (varargin{:});
 
-tpl = struct ("ambientIntensity", "%8.3f",\
-	      "intensity",        "%8.3f",\
-	      "radius",           "%8.3f",\
-	      "on",               "%s",\
-	      "attenuation",      "%8.3f %8.3f %8.3f",\
-	      "color",            "%8.3f %8.3f %8.3f",\
+tpl = struct ("ambientIntensity", "%8.3f",...
+	      "intensity",        "%8.3f",...
+	      "radius",           "%8.3f",...
+	      "on",               "%s",...
+	      "attenuation",      "%8.3f %8.3f %8.3f",...
+	      "color",            "%8.3f %8.3f %8.3f",...
 	      "location",         "%8.3f %8.3f %8.3f");
 
 body = "";
@@ -61,8 +61,8 @@ for [val,key] = h,
     end
 
 
-    body = [body,\
-	    sprintf("   %-20s   %s\n",key, \
+    body = [body,...
+	    sprintf("   %-20s   %s\n",key, ...
 		    sprintf (getfield (tpl,key), val))];
   end
 end
--- octave-vrml-1.0.13.orig/inst/vrml_TimeSensor.m
+++ octave-vrml-1.0.13/inst/vrml_TimeSensor.m
@@ -42,10 +42,10 @@ function s = vrml_TimeSensor (varargin)
 
 verbose = 0;
 
-tpl = struct ("cycleInterval", "SFTime",\
-"startTime",     "SFTime",\
-"stopTime",      "SFTime",\
-"enabled",       "SFBool",\
+tpl = struct ("cycleInterval", "SFTime",...
+"startTime",     "SFTime",...
+"stopTime",      "SFTime",...
+"enabled",       "SFBool",...
 "loop",          "SFBool"
 );
 
@@ -55,7 +55,7 @@ dnode = struct ();
 				# Transform varargin into key-value pairs
 i = j = k = 1;			# i:pos in new varargin, j:pos in headpar,
 				# k:pos is old varargin.
-while i <= length (varargin) && \
+while i <= length (varargin) && ...
       ! (ischar (varargin{i}) && isfield (tpl, varargin{i}))
   
   if j <= length (headpar)
@@ -70,7 +70,7 @@ while i <= length (varargin) && \
     i += 2;
     k++;
   else
-    error ("vrml_TimeSensor : Argument %i should be string, not '%s'",\
+    error ("vrml_TimeSensor : Argument %i should be string, not '%s'",...
 	   k,typeinfo (varargin{i}));
   end
 end
@@ -86,11 +86,11 @@ while i < length (varargin)
   k = varargin{i++};	# Read key
 
   if ! ischar (k)
-    error ("vrml_TimeSensor : Arg n. %i should be a string, not a %s.",\
+    error ("vrml_TimeSensor : Arg n. %i should be a string, not a %s.",...
 	   i-1, typeinfo (k));
   end
   if ! isfield (tpl, k) && ! strcmp (k,"DEF")
-    error ("vrml_TimeSensor : Unknown field '%s'. Should be one of :\n%s",\
+    error ("vrml_TimeSensor : Unknown field '%s'. Should be one of :\n%s",...
 	    k, sprintf ("   '%s'\n",fieldnames (tpl)'{:}));
   end
 
@@ -107,7 +107,7 @@ while i < length (varargin)
   else				# Add data field
 
     if verbose
-      printf ("vrml_TimeSensor : Adding '%s' of type %s, with arg of type %s\n",\
+      printf ("vrml_TimeSensor : Adding '%s' of type %s, with arg of type %s\n",...
 	      k,getfield(tpl,k),typeinfo (v));
     end
     tmp = getfield(tpl,k);
--- octave-vrml-1.0.13.orig/inst/vrml_Viewpoint.m
+++ octave-vrml-1.0.13/inst/vrml_Viewpoint.m
@@ -42,12 +42,12 @@ if mod(nargin,2) != 0, print_usage; end
 
 h = struct (varargin{:});
  
-tpl = struct ("fieldOfView",      "%8.3f",\
-	      "jump",             "%s",\
-	      "orientation",      "%8.3f %8.3f %8.3f %8.3f",\
-	      "orientation0",     "%8.3f %8.3f %8.3f %8.3f",\
-	      "position",         "%8.3f %8.3f %8.3f",\
-	      "description",      "\"%s\"",\
+tpl = struct ("fieldOfView",      "%8.3f",...
+	      "jump",             "%s",...
+	      "orientation",      "%8.3f %8.3f %8.3f %8.3f",...
+	      "orientation0",     "%8.3f %8.3f %8.3f %8.3f",...
+	      "position",         "%8.3f %8.3f %8.3f",...
+	      "description",      "\"%s\"",...
 	      "DEF",              "");
 DEF = "";
 defaultPos = [0 0 10];
@@ -113,8 +113,8 @@ endif
 
 body = "";
 for [val, key] = h
-  body = [body,\
-	  sprintf("   %-20s   %s\n",key, \
+  body = [body,...
+	  sprintf("   %-20s   %s\n",key, ...
 		  sprintf (getfield (tpl,key), val))];
 end
 
--- octave-vrml-1.0.13.orig/inst/vrml_arrow.m
+++ octave-vrml-1.0.13/inst/vrml_arrow.m
@@ -76,43 +76,43 @@ endfor
 smat1 = vrml_material (col(:,1), emit);
 smat2 = vrml_material (col(:,2), emit);
 
-v = sprintf (["Group {\n",\
-              "  children [\n",\
-              "    Transform {\n",\
-              "      translation  %8.3g %8.3g %8.3g\n",\
-              "      children [\n",\
-              "        Shape {\n",\
-              "          appearance Appearance {\n",\
-	      smat1,\
-	      "          }\n"\
-              "          geometry Cylinder {\n",\
-	      "            radius %8.3g\n",\
-	      "            height %8.3g\n",\
-	      "          }\n",\
-              "        }\n",\
-              "      ]\n",\
-              "    }\n",\
-              "    Transform {\n",\
-              "      translation  %8.3g %8.3g %8.3g\n",\
-              "      children [\n",\
-              "        Shape {\n",\
-              "          appearance Appearance {\n",\
-	      smat2,\
-              "          }\n",\
-              "          geometry Cone { \n",\
-              "            bottomRadius  %8.3g \n",\
-              "            height  %8.3g\n",\
-              "          }\n",\
-              "        }\n",\
-              "      ]\n",\
-              "    }\n",\
-              "  ]\n",\
-              "}\n"],\
-	     [0,(sz(1)-sz(2))/2,0],\
-	     sz(4),\
-	     sz(1)-sz(2),\
-	     [0,sz(2)/2+sz(1)-sz(2),0],\
-	     sz(3),\
+v = sprintf (["Group {\n",...
+              "  children [\n",...
+              "    Transform {\n",...
+              "      translation  %8.3g %8.3g %8.3g\n",...
+              "      children [\n",...
+              "        Shape {\n",...
+              "          appearance Appearance {\n",...
+	      smat1,...
+	      "          }\n"...
+              "          geometry Cylinder {\n",...
+	      "            radius %8.3g\n",...
+	      "            height %8.3g\n",...
+	      "          }\n",...
+              "        }\n",...
+              "      ]\n",...
+              "    }\n",...
+              "    Transform {\n",...
+              "      translation  %8.3g %8.3g %8.3g\n",...
+              "      children [\n",...
+              "        Shape {\n",...
+              "          appearance Appearance {\n",...
+	      smat2,...
+              "          }\n",...
+              "          geometry Cone { \n",...
+              "            bottomRadius  %8.3g \n",...
+              "            height  %8.3g\n",...
+              "          }\n",...
+              "        }\n",...
+              "      ]\n",...
+              "    }\n",...
+              "  ]\n",...
+              "}\n"],...
+	     [0,(sz(1)-sz(2))/2,0],...
+	     sz(4),...
+	     sz(1)-sz(2),...
+	     [0,sz(2)/2+sz(1)-sz(2),0],...
+	     sz(3),...
 	     sz(2));
 endfunction
 
--- octave-vrml-1.0.13.orig/inst/vrml_browse.m
+++ octave-vrml-1.0.13/inst/vrml_browse.m
@@ -113,7 +113,7 @@ if vrml_b_pid > 0		# There's already a b
     end
   else 
     if verbose
-      printf ( ["vrml_browse : ",\
+      printf ( ["vrml_browse : ",...
 		"browser pid=%d died. I'll spawn another\n"], vrml_b_pid);
     end
     vrml_b_pid = -1 ;
@@ -138,10 +138,10 @@ if !length (s)
   x /= 4 ; y /= 4 ;
 
   ##  pix = ones (n) ;
-  ##    tmp = [1 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 1 0 0 1 1 1 0 1 0 1 1 0 0 0 ;\
-  ##  	 0 1 1 0 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1 0 1 1 0 1 0 1 1 0 1 1 ;\
-  ##  	 0 1 1 0 1 0 1 1 1 1 1 1 0 1 1 1 0 1 1 0 1 1 0 1 0 1 1 0 0 0 ;\
-  ##  	 0 1 1 0 1 0 1 1 0 1 1 1 0 1 1 1 0 0 0 0 1 1 0 1 0 1 1 0 1 1 ;\
+  ##    tmp = [1 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 1 0 0 1 1 1 0 1 0 1 1 0 0 0 ;...
+  ##  	 0 1 1 0 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1 0 1 1 0 1 0 1 1 0 1 1 ;...
+  ##  	 0 1 1 0 1 0 1 1 1 1 1 1 0 1 1 1 0 1 1 0 1 1 0 1 0 1 1 0 0 0 ;...
+  ##  	 0 1 1 0 1 0 1 1 0 1 1 1 0 1 1 1 0 0 0 0 1 1 0 1 0 1 1 0 1 1 ;...
   ##  	 1 0 0 1 1 1 0 0 1 1 1 1 0 1 1 1 0 1 1 0 1 1 1 0 1 1 1 0 0 0 ];
 
   ##    rtmp = rows(tmp)+2;
@@ -194,7 +194,7 @@ if vrml_b_pid <= 0
     ##  cmd
     if status,
     
-      printf("vrml_browse : Can't start browser '%s'. Is it installed?\n",\
+      printf("vrml_browse : Can't start browser '%s'. Is it installed?\n",...
 	     vrml_b_name);
       p = vrml_b_pid ;
       return ;
--- octave-vrml-1.0.13.orig/inst/vrml_cyl.m
+++ octave-vrml-1.0.13/inst/vrml_cyl.m
@@ -48,7 +48,7 @@ if nargin > 1
   op1 = " rad tran col hcol brad emit " ;
   op0 = " verbose balls noemit arrow " ;
 
-  df = tars (rad, tran, col, hcol, verbose, balls, noemit, arrow, brad, \
+  df = tars (rad, tran, col, hcol, verbose, balls, noemit, arrow, brad, ...
 	    emit);
 
 
@@ -97,36 +97,36 @@ for i = 2:N
 
       smat = vrml_material (col(:,i-1), emitcol(:,i-1), tran(i-1));
 				# Do a cylinder
-      s = [s,sprintf(["Transform {\n",\
-		      "  translation %8.3f %8.3f %8.3f\n",\
-		      "  children [\n",\
-		      "    Transform {\n",\
-		      "      rotation    %8.3f %8.3f %8.3f %8.3f\n",\
-		      "      children [\n",\
-		      "        Shape {\n",\
-		      "          appearance Appearance {\n",\
-		      "              %s",\
-		      "          }\n",\
-		      "          geometry Cylinder {\n",\
-		      "            height %8.3f\n",\
-		      "            radius %8.3f\n",\
-		      "          }\n",\
-		      "        }\n",\
-		      "      ]\n",\
-		      "    }\n",\
-		      "  ]\n",\
-		      "}\n"],\
-		     t,\
-		     ax,an,\
-		     smat,\
-		     n,\
+      s = [s,sprintf(["Transform {\n",...
+		      "  translation %8.3f %8.3f %8.3f\n",...
+		      "  children [\n",...
+		      "    Transform {\n",...
+		      "      rotation    %8.3f %8.3f %8.3f %8.3f\n",...
+		      "      children [\n",...
+		      "        Shape {\n",...
+		      "          appearance Appearance {\n",...
+		      "              %s",...
+		      "          }\n",...
+		      "          geometry Cylinder {\n",...
+		      "            height %8.3f\n",...
+		      "            radius %8.3f\n",...
+		      "          }\n",...
+		      "        }\n",...
+		      "      ]\n",...
+		      "    }\n",...
+		      "  ]\n",...
+		      "}\n"],...
+		     t,...
+		     ax,an,...
+		     smat,...
+		     n,...
 		     rad)];
     else
       t = x(:,i-1) ;
       if isnan (hcol), hcol = col(:,i); end
       arrowcol = [col(:,i) hcol(1:3)(:)];
-      s = [s,\
-	   vrml_transfo(vrml_arrow ([n,nan,2*rad/n,rad/n],arrowcol,emit),\
+      s = [s,...
+	   vrml_transfo(vrml_arrow ([n,nan,2*rad/n,rad/n],arrowcol,emit),...
 		        t, ax*an)];
     end
   end
@@ -137,7 +137,7 @@ if balls,
   s = [s, vrml_points(x,"balls","col",col, "rad",brad,"emit",emit)];
 elseif columns(x)>2,
 				# Make a rounded junction
-  s = [s, vrml_points(x(:,2:columns(x)-1),"balls","col",col,"rad",rad, \
+  s = [s, vrml_points(x(:,2:columns(x)-1),"balls","col",col,"rad",rad, ...
 		      "emit", emit)];
 end
 
--- octave-vrml-1.0.13.orig/inst/vrml_demo_tutorial_1.m
+++ octave-vrml-1.0.13/inst/vrml_demo_tutorial_1.m
@@ -13,19 +13,19 @@
 ## You should have received a copy of the GNU General Public License along with
 ## this program; if not, see <http://www.gnu.org/licenses/>.
 
-printf (["\n",\
-	 "    VRML Mini-HOWTO's first listing\n",\
+printf (["\n",...
+	 "    VRML Mini-HOWTO's first listing\n",...
 	 "    Display a quadratic surface w/ 31 x 31 points\n\n"]);
 
-printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"\
-	 "      q : quit\n",\
-	 "      w : switch to walk mode\n",\
-	 "      e : switch to examine mode\n",\
-	 "      h : toggle headlights on or off\n",\
-	 "      drag left mouse : rotate (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
-	 "      drag right mouse : zoom (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
+printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"...
+	 "      q : quit\n",...
+	 "      w : switch to walk mode\n",...
+	 "      e : switch to examine mode\n",...
+	 "      h : toggle headlights on or off\n",...
+	 "      drag left mouse : rotate (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
+	 "      drag right mouse : zoom (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
 	 "\n"]);
 
 ## Listing 1
--- octave-vrml-1.0.13.orig/inst/vrml_demo_tutorial_2.m
+++ octave-vrml-1.0.13/inst/vrml_demo_tutorial_2.m
@@ -16,19 +16,19 @@
 printf("vrml_select_points does not work any more. Sorry\n");
 return
 
-printf (["\n",\
-	 "     VRML Mini-HOWTO's second listing\n",\
+printf (["\n",...
+	 "     VRML Mini-HOWTO's second listing\n",...
 	 "     Show 3D points and select some with the mouse\n\n"]);
 
-printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"\
-	 "      q : quit\n",\
-	 "      w : switch to walk mode\n",\
-	 "      e : switch to examine mode\n",\
-	 "      drag left mouse : rotate (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
-	 "      drag right mouse : zoom (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
-	 "      click on box : toggle selection\n",\
+printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"...
+	 "      q : quit\n",...
+	 "      w : switch to walk mode\n",...
+	 "      e : switch to examine mode\n",...
+	 "      drag left mouse : rotate (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
+	 "      drag right mouse : zoom (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
+	 "      click on box : toggle selection\n",...
 	 "\n"]);
 
 ## Listing 2
--- octave-vrml-1.0.13.orig/inst/vrml_demo_tutorial_3.m
+++ octave-vrml-1.0.13/inst/vrml_demo_tutorial_3.m
@@ -13,18 +13,18 @@
 ## You should have received a copy of the GNU General Public License along with
 ## this program; if not, see <http://www.gnu.org/licenses/>.
 
-printf (["\n",\
-	 "     VRML Mini-HOWTO's second listing\n",\
+printf (["\n",...
+	 "     VRML Mini-HOWTO's second listing\n",...
 	 "     Show a XYZ frame with a background\n\n"]);
 
-printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"\
-	 "      q : quit\n",\
-	 "      w : switch to walk mode\n",\
-	 "      e : switch to examine mode\n",\
-	 "      drag left mouse : rotate (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
-	 "      drag right mouse : zoom (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
+printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"...
+	 "      q : quit\n",...
+	 "      w : switch to walk mode\n",...
+	 "      e : switch to examine mode\n",...
+	 "      drag left mouse : rotate (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
+	 "      drag right mouse : zoom (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
 	 "\n"]);
 
 ## Listing 3
--- octave-vrml-1.0.13.orig/inst/vrml_demo_tutorial_4.m
+++ octave-vrml-1.0.13/inst/vrml_demo_tutorial_4.m
@@ -13,19 +13,19 @@
 ## You should have received a copy of the GNU General Public License along with
 ## this program; if not, see <http://www.gnu.org/licenses/>.
 
-printf (["\n",\
-	 "     VRML Mini-HOWTO's second listing\n",\
+printf (["\n",...
+	 "     VRML Mini-HOWTO's second listing\n",...
 	 "     Show a helix of ellipsoids and one consisting of cylinders\n\n"]);
 
-printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"\
-	 "      q : quit\n",\
-	 "      w : switch to walk mode\n",\
-	 "      e : switch to examine mode\n",\
-	 "      h : toggle headlights on or off\n",\
-	 "      drag left mouse : rotate (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
-	 "      drag right mouse : zoom (examine mode) or translate\n",\
-	 "          (walk mode).\n",\
+printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"...
+	 "      q : quit\n",...
+	 "      w : switch to walk mode\n",...
+	 "      e : switch to examine mode\n",...
+	 "      h : toggle headlights on or off\n",...
+	 "      drag left mouse : rotate (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
+	 "      drag right mouse : zoom (examine mode) or translate\n",...
+	 "          (walk mode).\n",...
 	 "\n"]);
 
 ## Listing 4
--- octave-vrml-1.0.13.orig/inst/vrml_ellipsoid.m
+++ octave-vrml-1.0.13/inst/vrml_ellipsoid.m
@@ -48,26 +48,26 @@ d(find(d)) = 1 ./ nze (d) ;
 
 [r,a] = rotparams (u');
 
-v = sprintf (["Transform {\n",\
-              "  translation  0 0 0\n",\
-	      "  rotation     %8.3g %8.3g %8.3g %8.3g\n",\
-	      "  scale        %8.3g %8.3g %8.3g\n",\
-              "  children [\n",\
-              "    Shape {\n",\
-              "      appearance  Appearance {\n",\
-              "        material Material {\n",\
-	      "          diffuseColor  %8.3g %8.3g %8.3g\n",\
-	      "          emissiveColor %8.3g %8.3g %8.3g\n",\
-	      "        }\n",\
-              "      }\n",\
-              "      geometry Sphere {}\n",\
-              "    }\n",\
-              "  ]\n",\
-              "}\n",\
-              ],\
-	     r,a,\
-	     d,\
-	     col,\
+v = sprintf (["Transform {\n",...
+              "  translation  0 0 0\n",...
+	      "  rotation     %8.3g %8.3g %8.3g %8.3g\n",...
+	      "  scale        %8.3g %8.3g %8.3g\n",...
+              "  children [\n",...
+              "    Shape {\n",...
+              "      appearance  Appearance {\n",...
+              "        material Material {\n",...
+	      "          diffuseColor  %8.3g %8.3g %8.3g\n",...
+	      "          emissiveColor %8.3g %8.3g %8.3g\n",...
+	      "        }\n",...
+              "      }\n",...
+              "      geometry Sphere {}\n",...
+              "    }\n",...
+              "  ]\n",...
+              "}\n",...
+              ],...
+	     r,a,...
+	     d,...
+	     col,...
 	     col/20);
 
 endfunction
--- octave-vrml-1.0.13.orig/inst/vrml_faces.m
+++ octave-vrml-1.0.13/inst/vrml_faces.m
@@ -153,11 +153,11 @@ function s = vrml_faces (x,f,varargin)
 
     texcoord_point_str = sprintf ("    %8.5f %8.5f\n", tcoord);
     
-    col_str_2 = sprintf (["  texCoord TextureCoordinate {\n",\
-			  "    point [\n      %s]\n",\
-			  "  }\n"\
-			  ],\
-			 texcoord_point_str\
+    col_str_2 = sprintf (["  texCoord TextureCoordinate {\n",...
+			  "    point [\n      %s]\n",...
+			  "  }\n"...
+			  ],...
+			 texcoord_point_str...
 			 );
     
 				# If texture has been provided
@@ -187,14 +187,14 @@ function s = vrml_faces (x,f,varargin)
       tcoord = tcoord (:,1:3*nfaces);
     end
 
-    col_str_2 = sprintf (["  texCoord TextureCoordinate {\n",\
-			  "    point [\n      %s]\n",\
-			  "  }\n",\
-			  "  texCoordIndex [\n      %s]\n",\
-			  "  coordIndex [\n      %s]\n",\
-			  ],\
-			 sprintf ("%10.8f %10.8f,\n      ",tcoord),\
-			 sprintf ("%-4d, %-4d, %-4d, -1,\n     ",0:3*nfaces-1),\
+    col_str_2 = sprintf (["  texCoord TextureCoordinate {\n",...
+			  "    point [\n      %s]\n",...
+			  "  }\n",...
+			  "  texCoordIndex [\n      %s]\n",...
+			  "  coordIndex [\n      %s]\n",...
+			  ],...
+			 sprintf ("%10.8f %10.8f,\n      ",tcoord),...
+			 sprintf ("%-4d, %-4d, %-4d, -1,\n     ",0:3*nfaces-1),...
 			 sprintf ("%-4d, %-4d, %-4d, -1,\n     ",f-1)
 			 );
     
@@ -205,7 +205,7 @@ function s = vrml_faces (x,f,varargin)
 				# surface
 
     col_str_1 = ["  appearance Appearance {\n",...
-		 vrml_material(col, emit, tran,DEFcol),\
+		 vrml_material(col, emit, tran,DEFcol),...
 		 "  }\n"];
 
     col_str_2 = "";
@@ -219,7 +219,7 @@ function s = vrml_faces (x,f,varargin)
       if tran, ts = sprintf ("transparency %8.3f",tran);
       else     ts = "";
       end
-      col_str_1 = ["appearance Appearance {\n",\
+      col_str_1 = ["appearance Appearance {\n",...
 		   "    material Material {",ts,"}\n}\n"];
     end
     if isnan (colorPerVertex)
@@ -229,13 +229,13 @@ function s = vrml_faces (x,f,varargin)
     end
     if colorPerVertex, cPVs = "TRUE"; else cPVs = "FALSE"; end
 
-    col_str_2 = sprintf (["     colorPerVertex %s\n",\
-			  "     color %s Color {\n",\
-			  "       color [\n%s\n",\
-			  "       ]\n",\
-			  "     }"],\
-			 cPVs,\
-			 col_def_str,\
+    col_str_2 = sprintf (["     colorPerVertex %s\n",...
+			  "     color %s Color {\n",...
+			  "       color [\n%s\n",...
+			  "       ]\n",...
+			  "     }"],...
+			 cPVs,...
+			 col_def_str,...
 			 sprintf("         %8.3f %8.3f %8.3f,\n",col));
   end
 
--- octave-vrml-1.0.13.orig/inst/vrml_frame.m
+++ octave-vrml-1.0.13/inst/vrml_frame.m
@@ -65,12 +65,12 @@ if args
   verbose = 0;
 
   ## df = tars (col, hcol, diam, scale, verbose);
-  df = struct ("dc",     dc,    \ # Diameter of cone (absolute)
-	       "dr",     dr,    \ # Diameter of rod (absolute)
-	       "col",    col,   \ # Color
-	       "hcol",   hcol,  \ # Color of head (if different)
-	       "diam",   diam,  \ # Diameter of cone relative to branch length
-	       "scale",  scale, \ # Lenght of branches
+  df = struct ("dc",     dc,    ... # Diameter of cone (absolute)
+	       "dr",     dr,    ... # Diameter of rod (absolute)
+	       "col",    col,   ... # Color
+	       "hcol",   hcol,  ... # Color of head (if different)
+	       "diam",   diam,  ... # Diameter of cone relative to branch length
+	       "scale",  scale, ... # Lenght of branches
 	       "verbose",verbose);
   op1 = " col hcol diam scale dc dr ";
   op0 = " verbose ";
@@ -127,17 +127,17 @@ sz(4,:) ./= n;
 
 tmp = [r2(:,1), null(r2(:,1)')](:,[2,1,3])';
 if det (tmp) < 0, tmp(3,:) *= -1; end
-a1 = vrml_transfo (vrml_arrow(sz(:,1),[col(1,:);hcol(1,:)],0),\
+a1 = vrml_transfo (vrml_arrow(sz(:,1),[col(1,:);hcol(1,:)],0),...
 		   [0,0,0],tmp);
 ## keyboard
 tmp = [r2(:,2), null(r2(:,2)')](:,[2,1,3])';
 if det (tmp) < 0, tmp(3,:) *= -1; end
-a2 = vrml_transfo (vrml_arrow(sz(:,2),[col(2,:);hcol(2,:)],0),\
+a2 = vrml_transfo (vrml_arrow(sz(:,2),[col(2,:);hcol(2,:)],0),...
 		   [0,0,0],tmp);
 
 tmp = [r2(:,3), null(r2(:,3)')](:,[2,1,3])';
 if det (tmp) < 0, tmp(3,:) *= -1; end
-a3 = vrml_transfo (vrml_arrow(sz(:,3),[col(3,:);hcol(3,:)],0),\
+a3 = vrml_transfo (vrml_arrow(sz(:,3),[col(3,:);hcol(3,:)],0),...
 		   [0,0,0],tmp);
 
 f0 = vrml_group (a1, a2, a3);
--- octave-vrml-1.0.13.orig/inst/vrml_group.m
+++ octave-vrml-1.0.13/inst/vrml_group.m
@@ -34,11 +34,11 @@ end
 ni = 4;
 s = [blanks(ni), strrep(s,"\n",["\n",blanks(ni)])(:)'];
 
-v = sprintf (["Group {\n",\
-              "  children [\n",\
-	      "%s",\
-              " ]\n",\
-	      "}\n"],\
+v = sprintf (["Group {\n",...
+              "  children [\n",...
+	      "%s",...
+              " ]\n",...
+	      "}\n"],...
 	     s);
 endfunction
 
--- octave-vrml-1.0.13.orig/inst/vrml_interp.m
+++ octave-vrml-1.0.13/inst/vrml_interp.m
@@ -45,12 +45,12 @@ persistent nname = struct ("col"
 if isfield (nname, typ)
   typs = nname.(typ);
 elseif ischar(typ)
-#  e2 = leval ("sprintf",\
+#  e2 = leval ("sprintf",...
 #	      append (list("    '%s'\n"), fieldnames (nname)));
   e2 = sprintf("    '%s'\n", fieldnames (nname){:});
   error ("vrml_interp : Unknown type '%s'. Should be in:\n%s",typ,e2);
 else
-#  e2 = leval ("sprintf",\
+#  e2 = leval ("sprintf",...
 #	      append (list("    '%s;\n"), fieldnames (nname)));
   e2 = sprintf("    '%s'\n", fieldnames (nname){:});
   error ("vrml_interp : typ should be a string in:\n%s",typ,e2);
--- octave-vrml-1.0.13.orig/inst/vrml_material.m
+++ octave-vrml-1.0.13/inst/vrml_material.m
@@ -53,10 +53,10 @@ if isempty (DEF), sd = "";
 else              sd = ["DEF ",DEF];
 end
 
-s = sprintf (["            material ",sd," Material {\n",\
-	      se,st,\
-	      "              diffuseColor  %8.3g %8.3g %8.3g \n",\
-	      "          }\n"],\
+s = sprintf (["            material ",sd," Material {\n",...
+	      se,st,...
+	      "              diffuseColor  %8.3g %8.3g %8.3g \n",...
+	      "          }\n"],...
 	     dc);
 endfunction
 
--- octave-vrml-1.0.13.orig/inst/vrml_parallelepiped.m
+++ octave-vrml-1.0.13/inst/vrml_parallelepiped.m
@@ -66,15 +66,15 @@ if balls
  end
 end
 
-x = [bnds([1 2 2 1 1 2 2 1],1)';\
-     bnds([1 1 2 2 1 1 2 2],2)';\
+x = [bnds([1 2 2 1 1 2 2 1],1)';...
+     bnds([1 1 2 2 1 1 2 2],2)';...
      bnds([1 1 1 1 2 2 2 2],3)'];
 
-faces = [1 2 3 4;\
-	 5 6 7 8;\
-	 1 2 6 5;\
-	 2 3 7 6;\
-	 3 4 8 7;\
+faces = [1 2 3 4;...
+	 5 6 7 8;...
+	 1 2 6 5;...
+	 2 3 7 6;...
+	 3 4 8 7;...
 	 4 1 5 8]';
 
 				# The facet
@@ -99,8 +99,8 @@ if border
   if isnan (bocol), bocol = col; end
     
   if !balls			# Make pretty junctions of cylinders
-    s = [s,\
-	 vrml_cyl(x(:,[1:columns(x),1]),"rad",borad,"emit",boemit,"col",col),\
+    s = [s,...
+	 vrml_cyl(x(:,[1:columns(x),1]),"rad",borad,"emit",boemit,"col",col),...
 	 vrml_points(x(:,1),"balls","rad",borad,"emit",boemit,"col",col)];
   else				# but only if balls don't cover them
     s = [s,vrml_cyl(x(:,[1:columns(x),1]),"rad",borad,"emit",boemit)];
--- octave-vrml-1.0.13.orig/inst/vrml_parallelogram.m
+++ octave-vrml-1.0.13/inst/vrml_parallelogram.m
@@ -86,8 +86,8 @@ if border
   if isnan (bocol), bocol = col; end
     
   if !balls			# Make pretty junctions of cylinders
-    s = [s,\
-	 vrml_cyl(x(:,[1:columns(x),1]),"rad",borad,"emit",boemit,"col",col),\
+    s = [s,...
+	 vrml_cyl(x(:,[1:columns(x),1]),"rad",borad,"emit",boemit,"col",col),...
 	 vrml_points(x(:,1),"balls","rad",borad,"emit",boemit,"col",col)];
   else				# but only if balls don't cover them
     s = [s,vrml_cyl(x(:,[1:columns(x),1]),"rad",borad,"emit",boemit)];
--- octave-vrml-1.0.13.orig/inst/vrml_points.m
+++ octave-vrml-1.0.13/inst/vrml_points.m
@@ -103,19 +103,19 @@ if !balls && !cubes && !nums,
 
   if prod (size (col)) == 3*P	# One color per point
     smat = "";
-    scol = sprintf ("  color Color { color [\n   %s]\n   }\n",\
+    scol = sprintf ("  color Color { color [\n   %s]\n   }\n",...
 		    sprintf ("      %8.3f %8.3f %8.3f\n", col));
   else				# One color
-    smat = ["  appearance Appearance {\n",\
-	    vrml_material(col, emit),"\n",\
+    smat = ["  appearance Appearance {\n",...
+	    vrml_material(col, emit),"\n",...
 	    "  }\n"];
     scol = "";
   end
 
-  s = sprintf(["Shape {\n",\
-	       smat,\
-	       "  geometry PointSet {\n",\
-	       scol,\
+  s = sprintf(["Shape {\n",...
+	       smat,...
+	       "  geometry PointSet {\n",...
+	       scol,...
 	       "  coord DEF %s Coordinate {\n  point [\n  " ],name); # ] 
   
   
@@ -131,28 +131,28 @@ elseif nums,
   s = "";
   if prod (size (col)) == 3, col = col(:) * ones (1,P); end
   for i = 1:P,
-    s0 = sprintf([\
-		  "Transform {\n",\
-		  "  translation %10.6g %10.6g %10.6g\n",\
-		  "  children [\n",\ # ]
-		  "    Billboard {\n",\
-		  "      children [\n",\ # ]
-		  "        Shape {\n",\
-		  "          appearance Appearance {\n",\
-		  vrml_material(col(:,i), emit, tran),"\n",\
-		  "          }\n",\
-		  "          geometry Text {\n",\
-		  "            string \"%s\"\n",\
-		  "            fontStyle FontStyle { size 0.25 }\n",\
-		  "          }\n",\
-		  "        }\n",\
-		  "      ]\n",\
-		  "    }\n",\
-		  "  ]\n",\
-		  "}\n"],\ # [
+    s0 = sprintf([...
+		  "Transform {\n",...
+		  "  translation %10.6g %10.6g %10.6g\n",...
+		  "  children [\n",... # ]
+		  "    Billboard {\n",...
+		  "      children [\n",... # ]
+		  "        Shape {\n",...
+		  "          appearance Appearance {\n",...
+		  vrml_material(col(:,i), emit, tran),"\n",...
+		  "          }\n",...
+		  "          geometry Text {\n",...
+		  "            string \"%s\"\n",...
+		  "            fontStyle FontStyle { size 0.25 }\n",...
+		  "          }\n",...
+		  "        }\n",...
+		  "      ]\n",...
+		  "    }\n",...
+		  "  ]\n",...
+		  "}\n"],... # [
 		 x(:,i),sprintf("%d",i-1));
 		 ## x(:,i),col,col,sprintf("%d",i-1));
-    ## "              emissiveColor %8.3f %8.3f %8.3f\n",\
+    ## "              emissiveColor %8.3f %8.3f %8.3f\n",...
     ## "      axisOfRotation 0.0 0.0 0.0\n",\ 
 
     s = sprintf("%s%s",s,s0);
@@ -196,20 +196,20 @@ else
 				# nodes individually
     if ! all_same_col, colorstr = vrml_material (col(:,i), emit); end
 
-    s0 = sprintf([\
-		  "Transform {\n",\
-		  "  translation %10.6g %10.6g %10.6g\n",\
-		  "  children [\n",\ # ]
-		  "    Shape {\n",\
-		  "      appearance Appearance {\n",\
-		  colorstr,"\n",\
-		  "      }\n",\
-		  "      geometry ",shapestr,"\n",\
-		  "    }\n",\
-		  "  ]\n",\
-		  "}\n"],\
+    s0 = sprintf([...
+		  "Transform {\n",...
+		  "  translation %10.6g %10.6g %10.6g\n",...
+		  "  children [\n",... # ]
+		  "    Shape {\n",...
+		  "      appearance Appearance {\n",...
+		  colorstr,"\n",...
+		  "      }\n",...
+		  "      geometry ",shapestr,"\n",...
+		  "    }\n",...
+		  "  ]\n",...
+		  "}\n"],...
 		 x(:,i));
-    ## "          emissiveColor %8.3f %8.3f %8.3f\n",\
+    ## "          emissiveColor %8.3f %8.3f %8.3f\n",...
     ##		 x(:,i),col,col,shape);
     s = sprintf("%s%s",s,s0);
   end
--- octave-vrml-1.0.13.orig/inst/vrml_surf.m
+++ octave-vrml-1.0.13/inst/vrml_surf.m
@@ -118,7 +118,7 @@ if numel (varargin)
   op1 = " tran col creaseAngle emit colorPerVertex checker DEFcoord DEFcol zcol bwid tex ";
   op0 = " smooth zgray zrb steps bars " ;
 
-  default = tars (tran, col, creaseAngle, emit, colorPerVertex, steps, bars, \
+  default = tars (tran, col, creaseAngle, emit, colorPerVertex, steps, bars, ...
 		  bwid, DEFcoord, DEFcol, zcol, smooth, checker, zgray, zrb, tex);
 
   s = read_options (varargin,"op0",op0,"op1",op1,"default",default);
@@ -374,7 +374,7 @@ if zgray || zrb || any (zcol(:)) # Treat
   ii = find (ci >= columns (zcol));
   if ! isempty (ii), ci(ii) = columns (zcol) - 1; cw(ii) = 1; end
   col = zeros (3,R*C);
-  col(:,keepip) = \
+  col(:,keepip) = ...
       zcol(:,ci) .* ([1;1;1]*(1-cw)) + zcol(:,ci+1) .* ([1;1;1]*cw);
 
 end				# EOF zgray zrb and zcol options
@@ -419,8 +419,8 @@ if ! colorPerVertex
     col = reshape (col,3, (R-1)*(C-1));
     col = [col, col];
   else
-    printf(["vrml_surf : ",\
-	    " colorPerVertex==0, (R-1)*(C-1)==%i, but col has size [%i,%i]\n"],\
+    printf(["vrml_surf : ",...
+	    " colorPerVertex==0, (R-1)*(C-1)==%i, but col has size [%i,%i]\n"],...
      R*C,size (col));
   end
 
@@ -441,9 +441,9 @@ if ! all(keepp),
     keept = all (reshape(keepp(trgs),3,2*(R-1)*(C-1)));
   else
     tmp = reshape (keepp,R,C);
-    keept = \
-	all (reshape (tmp(trgs(1:2,:)),2,2*(R-1)*(C-1))) & \
-	[(tmp(1:R-1,2:C) | tmp(2:R,2:C))(:)', \
+    keept = ...
+	all (reshape (tmp(trgs(1:2,:)),2,2*(R-1)*(C-1))) & ...
+	[(tmp(1:R-1,2:C) | tmp(2:R,2:C))(:)', ...
 	 (tmp(1:R-1,1:C-1) | tmp(2:R,1:C-1))(:)'] ;
   end
 
@@ -473,10 +473,10 @@ if ! all(keepp),
 end
 ## printf ("Calling vrml_faces\n");
 if !tex
-  s = vrml_faces (pts, trgs, "col", col,\
-		  "colorPerVertex",colorPerVertex,\
-		  "creaseAngle", creaseAngle,\
-		  "tran", tran, "emit", emit,\
+  s = vrml_faces (pts, trgs, "col", col,...
+		  "colorPerVertex",colorPerVertex,...
+		  "creaseAngle", creaseAngle,...
+		  "tran", tran, "emit", emit,...
 		  "DEFcoord",DEFcoord,"DEFcol",DEFcol);
 else
    texXY = texXY(:,keepip);
@@ -488,8 +488,8 @@ else
 #  texXY(:,trgs(:))
 #   R, C
 #  keyboard
-  s = vrml_faces (pts, trgs,\
-		  "tran", tran, "tex", tex, "tcoord", texXY,\
+  s = vrml_faces (pts, trgs,...
+		  "tran", tran, "tex", tex, "tcoord", texXY,...
 		  "DEFcoord",DEFcoord,"DEFcol",DEFcol);
 end  
 ## printf ("Done\n");
--- octave-vrml-1.0.13.orig/inst/vrml_text.m
+++ octave-vrml-1.0.13/inst/vrml_text.m
@@ -52,31 +52,31 @@ if nargin > 1
   style=     s.style;
   verbose=   s.verbose;
 end
-s = sprintf (["Shape {\n",\
-	      "  appearance Appearance {\n",\
-	      "    material Material {\n",\
-	      "      diffuseColor  %8.3f %8.3f %8.3f\n",\
-	      "      emissiveColor %8.3f %8.3f %8.3f\n",\
-	      "    }\n",\
-	      "  }\n",\
-	      "  geometry Text {\n",\
-	      "    string \"%s\"\n"\
-	      "    fontStyle FontStyle {\n",\
-	      "      family  \"%s\"\n",\
-	      "      justify \"%s\"\n",\
-	      "      style   \"%s\"\n",\
-	      "      size     %-8.3f\n",\
-	      "    }\n",\
-	      "  }\n",\
-	      "}\n",\
-	      ],\
-	     col,\
-	     col,\
-	     t,\
-	     family,\
-	     justify,\
-	     style,\
-	     size\
+s = sprintf (["Shape {\n",...
+	      "  appearance Appearance {\n",...
+	      "    material Material {\n",...
+	      "      diffuseColor  %8.3f %8.3f %8.3f\n",...
+	      "      emissiveColor %8.3f %8.3f %8.3f\n",...
+	      "    }\n",...
+	      "  }\n",...
+	      "  geometry Text {\n",...
+	      "    string \"%s\"\n"...
+	      "    fontStyle FontStyle {\n",...
+	      "      family  \"%s\"\n",...
+	      "      justify \"%s\"\n",...
+	      "      style   \"%s\"\n",...
+	      "      size     %-8.3f\n",...
+	      "    }\n",...
+	      "  }\n",...
+	      "}\n",...
+	      ],...
+	     col,...
+	     col,...
+	     t,...
+	     family,...
+	     justify,...
+	     style,...
+	     size...
 	     );
 
 endfunction
--- octave-vrml-1.0.13.orig/inst/vrml_transfo.m
+++ octave-vrml-1.0.13/inst/vrml_transfo.m
@@ -75,8 +75,8 @@ else
   error ("vrml_transfo : rotation should have size 3x3, 3 or 4\n");
 end
 if verbose,
-  printf (["vrml_transfo : %8.3f %8.3f %8.3f %8.3f\n",\
-	   "               %8.3f %8.3f %8.3f\n"],\
+  printf (["vrml_transfo : %8.3f %8.3f %8.3f %8.3f\n",...
+	   "               %8.3f %8.3f %8.3f\n"],...
 	  axis,ang,t);
   printf ("length of string is %i\n",prod(size(s)));
 end
@@ -103,11 +103,11 @@ if any (abs (c - c0)>sqrt (eps))
 end
 if !isempty (DEF), sd = ["DEF ",DEF," "]; end 
 
-v = sprintf([sd,"Transform {\n",sr,st,ss,\
-	     "  children [\n%s\n",\
-	     "           ]\n",\
-	     "}\n",\
-	     ],\
+v = sprintf([sd,"Transform {\n",sr,st,ss,...
+	     "  children [\n%s\n",...
+	     "           ]\n",...
+	     "}\n",...
+	     ],...
 	    s) ;
 ## keyboard
 
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