===== JSMath Debug =====

I've been using a version of jsMath and the jsMath plugin for dokuwiki for several months.  Whoever, I discovered that it seemed to be implicated in errors when I tried to save new or edited pages.  To debug this phenomenon, it seemed to me that it would be best to try a "vanilla" version of the plugin: if that doesn't cause the error, I can then incrementaly change and test to get back to what I was initially trying to accomplish.  The features I was trying to incorporate were
  - a syntax markup for the "block" version with newlines instead of a longer tag (%%<jsmath>%%), which seems to me more intuitive and at least as readible.
  - an associated "action" plugin to furnish a button in the edit form which adds the tags (less typing!)

I removed my version and installed the "vanilla" current release.  It didn't start up!! I consulted the q&a of [[http://www.dokuwiki.org/plugin:jsmath#unable_to_get_this_working|others experience with this issue]]. I've fiddled, and lost patience. I finally tried replacing its start-up script by the old-style one, and it worked. ((with the path hard-coded in the js file, not "managed" by the dokuwiki config)) There was no error message when I saved this page, either.




=== script.js that works ===

  // full url to jsMath installation                                                 
  var jsMathURL = 'http://get-the.net/jsMath';                        
   
  document.write('<SCRIPT>jsMath = {Controls: {cookie: {scale: 120}}}</SCRIPT>'); 
  document.write('<SCRIPT SRC="' + jsMathURL + '/jsMath.js"></SCRIPT>'); 
   
  function installJsMath()
  {
      jsMath.Process(document);
  }
   
  addInitEvent(installJsMath);

----

==== new procedure ====

=== local.php ===

Following update of the plugin parameters via admin/config, local.php contains 
  
  $conf['plugin']['jsmath']['use_dollar'] = 0;
  $conf['plugin']['jsmath']['jsMath_url'] = 'http://get-the.net/jsMath';


This //should// be read by

=== install_js.php ===

then injected into the js command:

   require('../../../conf/local.php');
   $jsMathURL = $conf['plugin']['jsmath']['jsMath_url'];
  
   ?>
   
   document.write('<SCRIPT>jsMath = {Controls: {cookie: {scale: 120}}}</SCRIPT>');
   document.write('<SCRIPT SRC="<?php echo($jsMathURL); ?>/jsMath.js"></SCRIPT>');
   
   function installJsMath()
   {
       jsMath.Process(document);
   }
   
   addInitEvent(installJsMath);

For some reason, that doesn't seem to be completing as it should.

==== More Troubleshooting ====

I've switch back to the "new procedure" -- almost. I've skipped (commented out) the path lookup in install_js.php and added the line
  var jsMathURL = 'http://get-the.net/jsMath';   

So, install_js.php is now identical to the script.js that works, with some commented-out php at the top. And it still doesn't work. For some reason, the "call" from script.js to install_js.php is not working.

lib/exe/js.php?edit=0&write=0 contains:

  document.write('<SCRIPT SRC="'+DOKU_BASE+'/lib/plugins/jsmath/install_js.php"></SCRIPT>');
which indicates it is calling the "right" file, but install_js.php seems to be empty when it arrives in the document (as JS).

Too bad.  I don't have time to continue on this, at least not now: I need to get the "block" style working on my mark-up variant!

==== Another Test ====

Today I made a clean, "vanilla" install of the latest version of dokuwiki and added the jsmath plugin.  The only "difficulty" I had was that the plugin manager couldn't unpack it (a .tar on Windoze), I had to unpack it can copy to the right directory. But after that, I set the path using the config manager and it load immediately!.  Very odd.

=== Conclusion ===

It is **not** a problem with the jsMath plugin.  And I have no idea why it doesn't work on my hosted site.

==== Allowed Types Issue ====

Why would jsmath blocks contain code that needs substitution or formatting?  That seems likely to break well-formed LaTeX that happens to resemble something some other wiki mark-up syntax "recognizes" (like newlines needed in arrays and eqarrays).  I've edited out those type in syntax.php just now (28 Sep 2009) and will give it a try.