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* bug#61743: cl-loop's "being the intervals of" does not let-bind var
@ 2023-02-23 22:44 JD Smith
  0 siblings, 0 replies; only message in thread
From: JD Smith @ 2023-02-23 22:44 UTC (permalink / raw)
  To: 61743

Macro-expanding the following reveals that the “being the intervals” cl-loop construct fails to let-bind the loop var (i here):

  (cl-loop for i being the intervals of x do (ignore))

expanding to:

(cl-block nil
  (cl-block --cl-finish--
    (cl--map-intervals
     (lambda
       (--cl-var1-- --cl-var2--)
       (setq i
	     (cons --cl-var1-- --cl-var2--))
       (ignore))
     x nil nil nil))
  nil)

This leads to the loop altering global variables.  Emacs v28.2




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2023-02-23 22:44 bug#61743: cl-loop's "being the intervals of" does not let-bind var JD Smith

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