":set urloperator=" will turn off splitting

used to go into infinite loop

common/content/util.js

@@ -625,7 +625,12 @@ const util = { //{{{
      */
     stringToURLArray: function stringToURLArray(str)
     {
-        let urls = util.splitLiteral(str, RegExp("\\s*" + options["urlseparator"] + "\\s*"));
+        let urls;
+
+        if (options["urlseparator"])
+            urls = util.splitLiteral(str, RegExp("\\s*" + options["urlseparator"] + "\\s*"));
+        else
+            urls = [str]
 
         return urls.map(function (url) {
             try

vimperator/locale/en-US/options.txt

@@ -759,7 +759,8 @@ Set the separator regex used to separate multiple URL args. Multiple arguments
 can be specified for [c]:open[c], and similar commands, using this regex as
 the separator. Using whitespace alone is not generally useful since it is often
 contained in a single argument. E.g. [c]:open linus torvalds[c] should perform
-a single search for the key words "linus" and "torvalds"
+a single search for the key words "linus" and "torvalds". If this is set to the
+empty string then these arguments will never be split.
 ____