Re: interactive?

[Andreas Schwab]

"alin.s" <address@hidden> writes:

> Where in the evaluator one makes the diff between interactive and
> non-interactive?

commandp is a built-in function in `C source code'.

(commandp function &optional for-call-interactively)

Non-nil if function makes provisions for interactive calling.
This means it contains a description for how to read arguments to give it.
The value is nil for an invalid function or a symbol with no function
definition.

Interactively callable functions include strings and vectors (treated
as keyboard macros), lambda-expressions that contain a top-level call
to `interactive', autoload definitions made by `autoload' with non-nil
fourth argument, and some of the built-in functions of Lisp.

Also, a symbol satisfies `commandp' if its function definition does so.

If the optional argument for-call-interactively is non-nil,
then strings and vectors are not accepted.

Andreas.

-- 
Andreas Schwab, address@hidden
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