bug#21871: Emacs Lisp Mode (at least): spurious parens in column 0 don't get bold red highlighting.

[Eli Zaretskii]

> Date: 12 Nov 2015 18:54:24 -0000
> From: Alan Mackenzie <acm@muc.de>
> Cc: Alan Mackenzie <acm@muc.de>
> 
> The fix to bug #16247 meant no longer setting syntax-begin-function to a
> non-nil value.  This is the condition which used to cause the appropriate
> font-lock-keywords form to get added to lisp-font-lock-keywords-1/2.  It
> no longer is.

Stefan?