diff --git a/core/modules/commander.js b/core/modules/commander.js
index 24d6ff6d5..1a58fbace 100644
--- a/core/modules/commander.js
+++ b/core/modules/commander.js
@@ -146,7 +146,14 @@ Commander.prototype.stringifyToken = function(index,callback) {
 						promptText: token.prompt || "Please enter a value",
 						defaultResult: token["default"] || "",
 						callback: function(err,userText) {
-							callback(err,userText);
+							if(err) {
+								callback(err);
+							} else {
+								if(token.transformFilter) {
+									userText = self.wiki.filterTiddlers(token.transformFilter,null,self.wiki.makeTiddlerIterator([userText]))[0] || "";
+								}
+								callback(null,userText);
+							}
 						},
 						input: self.streams.input,
 						output: self.streams.output,
diff --git a/editions/tw5.com/tiddlers/nodejs/tiddlywiki.info_Files.tid b/editions/tw5.com/tiddlers/nodejs/tiddlywiki.info_Files.tid
index 1438e6880..48d5ec4f8 100644
--- a/editions/tw5.com/tiddlers/nodejs/tiddlywiki.info_Files.tid
+++ b/editions/tw5.com/tiddlers/nodejs/tiddlywiki.info_Files.tid
@@ -30,7 +30,7 @@ Command tokens can be a simple string or <<.from-version "5.3.6">> a command tok
 
 * ''filter'': the value of the first result of a filter expression specified in the ''text'' property of the command token object
 * ''wikify'': the result of wikifying a text string specified in the ''text'' property of the command token object
-* ''prompt'': the result of prompting the user for a string. The ''prompt'' property of the command token object specifies the textual prompt to be used. The optional ''default'' property specifies a string value to be used if the user presses enter in response to the prompt
+* ''prompt'': the result of prompting the user for a string. The ''prompt'' property of the command token object specifies the textual prompt to be used. The optional ''default'' property specifies a string value to be used if the user presses enter in response to the prompt. The optional ''transformFilter'' property specifies a filter to be applied to the user input to transform it into a command token. The string input by the user is available in the variable `user-input`
 
 The EchoCommand is useful for debugging complex dynamic command tokens.
 
diff --git a/editions/tw5.com/tiddlywiki.info b/editions/tw5.com/tiddlywiki.info
index 14ee18e1e..f9507b76a 100644
--- a/editions/tw5.com/tiddlywiki.info
+++ b/editions/tw5.com/tiddlywiki.info
@@ -39,7 +39,8 @@
 			{
 				"type": "prompt",
 				"prompt": "Please enter some text and type enter",
-				"default": "Nothing"
+				"default": "Nothing",
+				"transformFilter": "[addprefix[testing ]]"
 			}
 		],
 		"index": [