Re: [harder@ifa.au.dk: Speed of all-completions]

[David Kastrup <dak@gnu.org>]

Luc Teirlinck <teirllm@dms.auburn.edu> writes:

> If we decide to bind around the entire while loop we should document
> the fact that the binding is in effect during the call to predicate in
> the Elisp manual.  In that case, the
> `if (CONSP (Vcompletion_regexp_list))' should be removed, and for
> consistency, the scope should also be extended in Ftest_completion.
> 
> Is one single prolonged binding using specbind expensive or was the
> efficiency problem completely caused by the fact that it was used
> countless times in a loop?

The single prolonged binding is expensive, as in most cases the loop
is not entered even once.

At least that's what I understood.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum