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Roland McGrath 1992-03-10 22:16:10 +00:00
parent e97dd18354
commit 03759fe003
1 changed files with 8 additions and 8 deletions
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lisp/map-ynp.el
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@ -1,5 +1,5 @@
;;; map-ynp.el -- General-purpose boolean question-asker.
;;; Copyright (C) 1991 Free Software Foundation, Inc.
;;; Copyright (C) 1991, 1992 Free Software Foundation, Inc.
;;; Written by Roland McGrath.
;;;
;;; This program is free software; you can redistribute it and/or modify
@ -41,13 +41,13 @@ Takes args PROMPTER ACTOR LIST, and optional arg HELP.
LIST is a list of objects, or a function of no arguments to return the next
object or nil.
PROMPTER is a function of one arg (an object from LIST),
which returns a string to be used as the prompt for that object.
If the return value is not a string, it is eval'd to get the answer.
So, it may be nil to ignore the object, t to act on the object without
asking the user, or a form to do a more complex prompt.
PROMPTER may instead be a string, in which case the prompt is
\(format PROMPTER OBJECT\).
If is PROMPTER a string, the prompt is \(format PROMPTER OBJECT\). If not
a string, PROMPTER is a function of one arg (an object from LIST), which
returns a string to be used as the prompt for that object. If the return
value is not a string, it is eval'd to get the answer; it may be nil to
ignore the object, t to act on the object without asking the user, or a
form to do a more complex prompt.
ACTOR is a function of one arg (an object from LIST),
which gets called with each object that the user answers `yes' for.