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| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version

## until

Arguments: condition &rest forms

Evaluates forms repeatedly until condition (which should be a Lisp form) evaluates to a true value.

The definition of until is

    (defmacro until (condition &rest forms)
      `(loop (when ,condition (return)) ,@forms))

Note that loop surrounds its body with a block named `nil` (as used by the return form which is the consequent of the when form). This macro returns `nil`.

See also while.

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This page was not revised from the 10.0 page.
Created 2019.8.20.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version