a theory why adobe reader is clunky with textedit

[1] says (undated?)
> When an attempt to load the URL is made, 
> Adobe AIR uses Dynamic Data Exchange (DDE) to connect to 
> an open instance of the browser registered for URL requests. 
> If that fails, Adobe AIR falls back on Shell Execution.

So if no browser is running a browser window gets opened. 
If a browser is already running its window gets reused.
This happens unconditionally (before URL been examined).  


[2] says 
> kodelite,May 12, 2012 4:08 PM ...
> Regular http hyperlinks seem to work fine, great job! 
> However, custom url schemes still don't seem to work, 
> ...
> ...
> Pat Wibbeler, May 14, 2012 9:14 AM   in reply to kodelite
> Enhanced linking is not something we have on our immediate roadmap, 
> however, we can add your request for this feature. 

So browser is sent textedit URL and doesn't understand it.
Then AR does Shell Execution, which gets through.


[1] http://helpx.adobe.com/x-productkb/multi/html-links-dont-open-default.html
[2] https://forums.adobe.com/message/4401951#4401951