To insert debug code in all functions using regular expression

Lets illustrate with a Javascript  Source Code and Notepad++ IDE

Regular Expression to Find functions

((\w*)\s*[:|=]\s*function\(\w*\)\s*\{)

Debug Code to insert inside each functions

console.log("functionName");

Regular Expression to Insert Debug Code inside Functions

$1 \n\tconsole\.log\("$2"\)\;

Note: Please enable "Regular expression" and ". matches newline" in Search Mode in Replace box in Notepad++ for inserting inside more than 1 function using regular expression.

A sample Javascript before inserting Debug code

var SyntaxHighlighter = function() {

    var sh = {

        all: function(params)

        {

            attachEvent(

                window,'description'

            );

        }

    };

}();

Javascript code after inserting Debug code using Regular Expression

var SyntaxHighlighter = function() {

      console.log("SyntaxHighlighter");

    var sh = {

        all: function(params)

        {

            console.log("all");

            attachEvent(

                window,'description'

            );

        }

    };

}();

To know more about How this Regular Expression Works and Customisation