Convert all user-definable defvar into defcustom in bison-mode defgroup. by pierre-rouleau · Pull Request #13 · Wilfred/bison-mode
Add the defgroup bison-mode, under the defgroup for C.
All defcustom are in this new defgroup.
This has no impact on users of Emacs 20 and later when defgroup and defcustom
were introduced (in 1997...