The Syntax event:
Fires:
radio_button_unchecked
When the 'syntax' option has been set.
Notes:
radio_button_unchecked
The pattern is matched against the syntax name.
radio_button_unchecked
<afile> expands to the name of the file where this option was set.
radio_button_unchecked
<amatch> expands to the new value of 'syntax'.