spellchecker should not check links

The spellchecker should not check links because this are
mostly no real words. This patch installs some filters
so that links won't be transfered to the spellchecker.

darcs-hash:20050613215834-7ef76-444b4aa6ca9f471ae99c3f6fd3e3b9d380161f8a.gz

lib/exe/spellcheck.php

@@ -66,6 +66,21 @@ if(function_exists($call)){
   print "The called function does not exist!";
 }
 
+/**
+ * replaces a link with blanks of same length
+ * The first string is the complete link and
+ * and the second optional string might be the
+ * alternative text that would become part of
+ * the result string and will be checked for
+ * spelling errors again.
+ *
+ * @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
+ */
+function spaceslink($string, $check=""){
+  $result = str_pad($check,utf8_strlen($string)-2," ",STR_PAD_LEFT);
+  return $result."  ";
+}
+
 /**
  * Spellchecker. Called by an AJAX request
  *
@@ -96,6 +111,10 @@ function spell_check() {
 /*  $string = preg_replace('!<\?(code|del|file)( \+)?>!e','spellclean(\\1)',$string); */
 //  $string = preg_replace('!()!e','spellclean(\\1)',$string);
 
+  // don't check links and medialinks for spelling errors
+  $string = preg_replace('/\{\{[^\|]*\|?(.*)\}\}/e','spaceslink("\\0","\\1")',$string);
+  $string = preg_replace('/\[\[[^\|]*\|?(.*)\]\]/e','spaceslink("\\0","\\1")',$string);
+  
   // run aspell in terse sgml mode
   if(!$spell->runAspell($string,$out,$err,array('!','+html'))){
   //if(!$spell->runAspell($string,$out,$err)){