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bug#31641: 26.1; iter-do variable not left unused warning


From: Basil L. Contovounesios
Subject: bug#31641: 26.1; iter-do variable not left unused warning
Date: Fri, 05 Feb 2021 17:12:15 +0000
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Lars Ingebrigtsen <larsi@gnus.org> writes:

> diff --git a/lisp/emacs-lisp/generator.el b/lisp/emacs-lisp/generator.el
> index 9eb6d95964..0b644cc72c 100644
> --- a/lisp/emacs-lisp/generator.el
> +++ b/lisp/emacs-lisp/generator.el
> @@ -731,7 +731,10 @@ iter-do
>             (,it-symbol ,iterator))
>         (while (not ,done-symbol)
>           (condition-case ,condition-symbol
> -             (setf ,var (iter-next ,it-symbol))
> +             ;; Variables that start with an underscore shouldn't be set.
> +             ,(if (string-match-p "\\`_" (symbol-name var))
> +                  nil
> +                `(setf ,var (iter-next ,it-symbol)))

Nit - AKA the following?

  ,(unless (string-prefix-p "_" (symbol-name var))
     `(setf ,var (iter-next ,it-symbol)))

-- 
Basil





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