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cl-reduce doc string improvement

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* lisp/emacs-lisp/cl-seq.el (cl-reduce): Explain what happens when
using :from-end (bug#57273).
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Colin Woodbury 2022-08-18 15:06:56 +02:00 committed by Lars Ingebrigtsen
parent 21751f02d3
commit ac43ac1af9
1 changed files with 4 additions and 0 deletions
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lisp/emacs-lisp/cl-seq.el
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@ -139,6 +139,10 @@ only case where FUNCTION is called with fewer than two arguments.
If SEQ contains exactly one element and no :INITIAL-VALUE is
specified, then return that element and FUNCTION is not called.
If :FROM-END is non-nil, the reduction occurs from the back of
the SEQ moving forward, and the order of arguments to the
FUNCTION is also reversed.
\n(fn FUNCTION SEQ [KEYWORD VALUE]...)"
(cl--parsing-keywords (:from-end (:start 0) :end :initial-value :key) ()
(or (listp cl-seq) (setq cl-seq (append cl-seq nil)))