Re: initial stab at :import

Adriaan de Groot wrote:

> On Tuesday 16 September 2003 11:13, you wrote:
> > When an action is invoked the scopes are setup to search for variables
> > in:
> > - the local scope of the action build commands.
> > - the call stack, scopes from where the action was invoked (with :do or
> >
> > - the recipe where the action was defined (the module scope)
> > - the toplevel scope
> >
> > This is the same as what is used for actions defined by the user, except
> > that the tree of parent recipes is not searched.  The difference with
> 
> Part of the "problem" here is about "disappearing" scopes. Consider,
> for instance, a child recipe defining an action for filetype d, where
> the action uses a particular variable defined in that child recipe.
> After the child is done, its variables are too, but the action remains
> defined in the global scope. If the action is invoked later, it fails,
> because the variables it uses aren't defined anymore.

You must be misunderstanding something.  The scope of a child recipe is
not deleted.  The action defined in a child can still access variables
there.  Example:

	main.aap:
		:child test/try.aap
		all:
			:do tryit any

	test/try.aap:
		THEVAR = the value
		:action tryit default
			:print $_recipe.THEVAR

% aap
the value
%

I notice that using $THEVAR instead of $_recipe.THEVAR fails.  Is that
a bug?  No, the documentation mentions that _recipe needs to be used.
The explanation about which scopes are searched for the action commands
could be clearer...

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