Callback on missing variable?

[IngwiePhoenix]

Is there a way how to do something if the configuration is encountering an unknown variable?

I want to use libucl for configuring a build tool. So I would need to look, if variable $CC is not defined, that it will be defined.

Kind regards, Ingwie.

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[vstakhov]

Currently unknown variables are just treated as raw strings. For example, if you have the following definition:

key = "$TEST";

Where there is no such variable TEST then key would have value $TEST. I've introduced variables merely to define some cool features, such as $CURDIR but they are not very well designed a.t.m.

[IngwiePhoenix]

Ohhh, I see. Though, I find variables quite useful, which is why I will be looking into at least adding environmental variables to the config file, so they can be used from the inside. Would be nice if actual variable definitions would be possible in a way - thru a pre-processor or such. Or, just a simple callback in place of the current fallback solution - which would already help. :) Am 08.05.2014 um 13:23 schrieb Vsevolod Stakhov [email protected]:

Currently unknown variables are just treated as raw strings. For example, if you have the following definition:

key = "$TEST"; Where there is no such variable TEST then key would have value $TEST. I've introduced variables merely to define some cool features, such as $CURDIR but they are not very well designed a.t.m.

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[vstakhov]

I've added a common callback for variables to ucl.