() Jason Vas Dias <jason.vas.dias@gmail.com>
() Fri, 19 May 2017 11:43:53 +0000

   But leaving the core dumps aside, continuous syntax checking
   and document re-coloring is just plain annoying, when typing,
   but is nice when reading - I wish I could turn it off & on
   quickly & easily .

Have you explored reducing the intrusiveness of this checking?
On my (old, slow) system given my (old, slow) typing speed,
Emacs seems responsive enough w/ only:

 (setq jit-lock-context-time 1.5)

I see there are other vars (e.g., ‘jit-lock-contextually’), too.
       
-- 
Thien-Thi Nguyen -----------------------------------------------
 (defun responsep (query)
   (pcase (context query)
     (`(technical ,ml) (correctp ml))
     ...))                              748E A0E8 1CB8 A748 9BFA
--------------------------------------- 6CE4 6703 2224 4C80 7502