bug#49647: 27.2; Reference Manual sec. 10.2.4; Incorrect example for indirect-function

[Scott Marks]

If one copies the example:

Here is how you could define indirect-function in Lisp:

(defun indirect-function (function)

  (if (symbolp function)

      (indirect-function (symbol-function function))

    function))

this code will throw due to infinite recursion when invoked as

(indirect-function nil)

The fix is obvious: wrap (symbolp function) with (and function ...)

I don't think this would distract from the point of the example.

Hope this helps

Scott

In GNU Emacs 27.2 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6 (Build 18G95))

 of 2021-03-27 built on builder10-14.porkrind.org

Windowing system distributor 'Apple', version 10.3.2022

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