Re: tags completion bug

[gerd.moellmann@t-online.de (Gerd Moellmann)]

Francesco Potorti` <pot@gnu.org> writes:

> I see that in etags-tags-completion-table you added the characters
> "+*:?"  as legitimate in an identifier.  Stefan Monnier on emacs-devel
> pointed out that the asterisk is used in Common Lisp.  What are the
> other characters for?

`+' is conventionally used in Common Lisp for constants like
(defconstant +a-constant+ 42).

`?' is used in Scheme (and sometimes in CL) for predicates, for
instance `(define (some-predicate? x) ...)'.

Alas, I don't remember what the `:' is for.  Maybe for symbols, in CL,
that include package names, like in `(defun some-package:some-symbol
() ...)'?

> I'd like to write this info in a comment inside the function.
> 
> Also, would it be reasonable to use \(\sw\|\s_\), instead of the
> bracketed lists of characters?

I guess that would make sense.

I could think of other characters that are currently not in the
completion table, like `!' that's used in Scheme, as in `(define
(modify!  something) ...)', or maybe `%' that's conventionally used in
CL for internal-use-only functions, `(defun %internal-function ()
...)'.