Updated Compress HTML output (markdown)

Compress-HTML-output.md

@@ -1,4 +1,70 @@
-To remove useless whitespace from generated HTML, define a 'display_override' hook:
+To remove useless whitespace from generated HTML, except for Javascript. [[Regex Source](http://stackoverflow.com/questions/5312349/minifying-final-html-output-using-regular-expressions-with-codeigniter)]
+
+### Step 1: Enable Hooks in config/config.php
+```php
+$config['enable_hooks'] = TRUE;
+```
+
+### Step 2: Add in the compress hook to config/hooks.php
+```php
+// Compress output
+$hook['display_override'][] = array(
+	'class' => '',
+	'function' => 'compress',
+	'filename' => 'compress.php',
+	'filepath' => 'hooks'
+);
+```
+
+### Step 3: define a 'display_override' hook:
+
+```php
+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+function compress()
+{
+	ini_set("pcre.recursion_limit", "16777");
+	$CI =& get_instance();
+	$buffer = $CI->output->get_output();
+
+	$re = '%# Collapse whitespace everywhere but in blacklisted elements.
+        (?>             # Match all whitespans other than single space.
+          [^\S ]\s*     # Either one [\t\r\n\f\v] and zero or more ws,
+        | \s{2,}        # or two or more consecutive-any-whitespace.
+        ) # Note: The remaining regex consumes no text at all...
+        (?=             # Ensure we are not in a blacklist tag.
+          [^<]*+        # Either zero or more non-"<" {normal*}
+          (?:           # Begin {(special normal*)*} construct
+            <           # or a < starting a non-blacklist tag.
+            (?!/?(?:textarea|pre|script)\b)
+            [^<]*+      # more non-"<" {normal*}
+          )*+           # Finish "unrolling-the-loop"
+          (?:           # Begin alternation group.
+            <           # Either a blacklist start tag.
+            (?>textarea|pre|script)\b
+          | \z          # or end of file.
+          )             # End alternation group.
+        )  # If we made it here, we are not in a blacklist tag.
+        %Six';
+
+    $new_buffer = preg_replace($re, " ", $buffer);
+
+    // We are going to check if processing has working
+	if ($new_buffer === null)
+	{
+		$new_buffer = $buffer;
+	}
+
+	$CI->output->set_output($new_buffer);
+	$CI->output->_display();
+}
+ 
+/* End of file compress.php */
+/* Location: ./system/application/hooks/compress.php */
+```
+
+
+
+## Old Method:
 
 ```php