bug#6086: Symbol's value as variable is void: fundamental-mode-syntax-table

[Jim Meyering <jim@meyering.net>]

Stefan Monnier wrote:
>>     (defun my-_-hook (modename)
>>       (add-hook
>>         (intern (concat modename "-mode-hook"))
>>         `(lambda () (modify-syntax-entry ?_ "w"
>>                      ,(intern (concat modename "-mode-syntax-table"))))))
>
>>     ;;; Treat underscores as word-constituent characters in these modes.
>>     (mapcar 'my-_-hook '("c" "c++" "perl" "makefile" "text" "fundamental"
>>                          "m4" "shell-script" "autoconf"))
>
> In prior versions of Emacs, the "fundamental" entry had no effect at
> all: it just added a function to an unused hook.  So the fact that the
> function would fail if it were run was not noticed.
>
>> For now, I've simply removed "fundamental" from the list.
>
> Looks right.
>
>> Is there a better way?
>
> I guess we could provide a
> (defconst fundamental-mode-syntax-table (standard-syntax-table)).

Thanks for explaining.