Function unindent

HTML/external/syntaxhighlighter_3.0.83/src/shCore.js:944–976

* Unindents a block of text by the lowest common indent amount. * @param {String} str Text to unindent. * @return {String} Returns unindented text block.

(str)

 * @return {String}      Returns unindented text block.
 */
function unindent(str)
{
	var lines = splitLines(fixInputString(str)),
		indents = new Array(),
		regex = /^\s*/,
		min = 1000
		;
	
	// go through every line and check for common number of indents
	for (var i = 0; i < lines.length && min > 0; i++) 
	{
		var line = lines[i];
		
		if (trim(line).length == 0) 
			continue;
		
		var matches = regex.exec(line);
		
		// In the event that just one line doesn't have leading white space
		// we can't unindent anything, so bail completely.
		if (matches == null) 
			return str;
			
		min = Math.min(matches[0].length, min);
	}
	
	// trim minimum common number of white space from the begining of every line
	if (min > 0) 
		for (var i = 0; i < lines.length; i++) 
			lines[i] = lines[i].substr(min);
	
	return lines.join('\n');
};

/**
 * Callback method for Array.sort() which sorts matches by