Re: Passing optional arguments for use with internal functions

[Emanuel Berg <incal@dataswamp.org>]

uzibalqa wrote:

> To be absolutely sure I understand. If I want to default
> a function optional argument if it is not used, the command
> to that that is
>
> (defun dothis x ()
>   (or x (setq x 8))  ; [...]
>   (do-something x)
> )
>
> And this would always work. In will work if I use the
> lexical-binding directive at the top of a file. And it would
> work if I use dynamic-binding directive at the top of
> a file.

Correct, as that wouldn't affect them because function formal
parameters (the argument placeholders) are always under
lexical/static scope.

> Calling the command (dothis) will always use x with value 8,
> and executing (do-something 8) .

Yes, you forgot about the &optional keyword in your example
but other than that it is correct.

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