diff -r 000000000000 -r c63de9eb7045 smarty/plugins/outputfilter.trimwhitespace.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/smarty/plugins/outputfilter.trimwhitespace.php	Sun Mar 23 14:59:33 2008 -0400
@@ -0,0 +1,75 @@
+<?php
+/**
+ * Smarty plugin
+ * @package Smarty
+ * @subpackage plugins
+ */
+
+/**
+ * Smarty trimwhitespace outputfilter plugin
+ *
+ * File:     outputfilter.trimwhitespace.php<br>
+ * Type:     outputfilter<br>
+ * Name:     trimwhitespace<br>
+ * Date:     Jan 25, 2003<br>
+ * Purpose:  trim leading white space and blank lines from
+ *           template source after it gets interpreted, cleaning
+ *           up code and saving bandwidth. Does not affect
+ *           <<PRE>></PRE> and <SCRIPT></SCRIPT> blocks.<br>
+ * Install:  Drop into the plugin directory, call
+ *           <code>$smarty->load_filter('output','trimwhitespace');</code>
+ *           from application.
+ * @author   Monte Ohrt <monte at ohrt dot com>
+ * @author Contributions from Lars Noschinski <lars@usenet.noschinski.de>
+ * @version  1.3
+ * @param string
+ * @param Smarty
+ */
+function smarty_outputfilter_trimwhitespace($source, &$smarty)
+{
+    // Pull out the script blocks
+    preg_match_all("!<script[^>]+>.*?</script>!is", $source, $match);
+    $_script_blocks = $match[0];
+    $source = preg_replace("!<script[^>]+>.*?</script>!is",
+                           '@@@SMARTY:TRIM:SCRIPT@@@', $source);
+
+    // Pull out the pre blocks
+    preg_match_all("!<pre>.*?</pre>!is", $source, $match);
+    $_pre_blocks = $match[0];
+    $source = preg_replace("!<pre>.*?</pre>!is",
+                           '@@@SMARTY:TRIM:PRE@@@', $source);
+
+    // Pull out the textarea blocks
+    preg_match_all("!<textarea[^>]+>.*?</textarea>!is", $source, $match);
+    $_textarea_blocks = $match[0];
+    $source = preg_replace("!<textarea[^>]+>.*?</textarea>!is",
+                           '@@@SMARTY:TRIM:TEXTAREA@@@', $source);
+
+    // remove all leading spaces, tabs and carriage returns NOT
+    // preceeded by a php close tag.
+    $source = trim(preg_replace('/((?<!\?>)\n)[\s]+/m', '\1', $source));
+
+    // replace textarea blocks
+    smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:TEXTAREA@@@",$_textarea_blocks, $source);
+
+    // replace pre blocks
+    smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:PRE@@@",$_pre_blocks, $source);
+
+    // replace script blocks
+    smarty_outputfilter_trimwhitespace_replace("@@@SMARTY:TRIM:SCRIPT@@@",$_script_blocks, $source);
+
+    return $source;
+}
+
+function smarty_outputfilter_trimwhitespace_replace($search_str, $replace, &$subject) {
+    $_len = strlen($search_str);
+    $_pos = 0;
+    for ($_i=0, $_count=count($replace); $_i<$_count; $_i++)
+        if (($_pos=strpos($subject, $search_str, $_pos))!==false)
+            $subject = substr_replace($subject, $replace[$_i], $_pos, $_len);
+        else
+            break;
+
+}
+
+?>