Hi,

I read the original bug report.

I wonder why you want do

   (modify-syntax-entry ?_ "w")

.

This change suppresses the difference of \M-f and \M-C-f.
Do you really want this suppression?

Masatake YAMATO


>> From: Chris Hecker <checker@d6.com>
>> Date: Tue, 31 Oct 2017 20:51:23 -0700
>> Cc: yamato@redhat.com
>>
>> If you like using identifiers with underscores (_) in them, like
>> C macros or even just regular identifiers, you can add _ as a word
>> constituent in the syntax tables, but if you're using subword-mode
>> then the forward and backwards regexes need updating to work
>> correctly.  Here is the relevant section of my .emacs c-mode hook:
>
> Perhaps we should make subword-forward-regexp and
> subword-backward-regexp defcustoms?