allow \uXXXX to represent a unicode in a string

git-svn-id: http://svn.code.sf.net/p/iso2mesh/code/trunk/jsonlab@481 786e58fb-9377-0410-9ff7-e4ac0ac0635c

Author: fangq

savejson.m

@@ -465,9 +465,11 @@
   for i=1:length(escapechars);
     newstr=regexprep(newstr,escapechars{i},escapechars{i});
   end
+  newstr=regexprep(newstr,'\\\\(u[0-9a-fA-F]{4}[^0-9a-fA-F]*)','\$1');
 else
   escapechars={'\\','\"','\/','\a','\b','\f','\n','\r','\t','\v'};
   for i=1:length(escapechars);
     newstr=regexprep(newstr,escapechars{i},regexprep(escapechars{i},'\\','\\\\'));
   end
+  newstr=regexprep(newstr,'\\\\(u[0-9a-fA-F]{4}[^0-9a-fA-F]*)','\\$1');
 end