Merge pull request #2 from BRONSOLO/master

The episode of Who's the Boss where Tony "checks for needed escape characters."

Author: chriddyp

plotly/plotly_aux/check_escape.m

@@ -0,0 +1,20 @@
+function [ escaped_val ] = check_escape(val)
+%adds '\' escape character if needed
+ec = '\';
+ind = find( (val == '"') | (val == '\' ));
+if(ind)
+    if(ind(1) == 1)
+        val = ['\' val];
+        ind = ind + 1;
+        ind(1) = [];
+    end
+    if (ind)
+        val = [val ec(ones(1,length(ind)))]; %extend lengh of val to prep for char shifts.
+        for i = 1:length(ind)
+            val(ind(i):end) = [ec val(ind(i):end-1)];
+            ind = ind+1;
+        end
+    end
+end
+
+escaped_val = val;

plotly/plotly_aux/m2json.m

@@ -25,6 +25,7 @@
         valstr = strrep(valstr, 'Inf', 'null');
         valstr = strrep(valstr, 'NaN', 'null');
     elseif ischar(val)
+         val = check_escape(val); %add escape characters
          valstr = ['"' val '"'];
     elseif islogical(val)
         if val