Re: How does one set up a syntax table for (* and //?

[Noam Postavsky <npostavs@users.sourceforge.net>]

On Wed, Jan 11, 2017 at 10:44 AM, Clément Pit--Claudel
<clement.pit@gmail.com> wrote:
>
> As far as I can tell from the docs, the following syntax table should recognize // … line comments and nestable (* … *) comments properly:
>
>     (defvar example-syntax-table
>       (let ((table (make-syntax-table)))
>         (modify-syntax-entry ?*  ". 23" table)
>         (modify-syntax-entry ?/  ". 12c" table)
>         (modify-syntax-entry ?\n  "> c" table)
>         (modify-syntax-entry ?\( "()1n" table)
>         (modify-syntax-entry ?\) ")(4n" table)
>         table))
[...]
> In this example, the last line (“which incorrectly extends past the newline?”), is considered to be a comment, because the sequence "(/" is treated as a multiline comment opener.

You don't want "a" style comment chars combining with "c" style
comment chars. Unfortunately, Emacs doesn't implement that. I think
you'll have to implement these kind of comments with a
syntax-propertize-function.