Re: [Boost-build] What is _message_

Subject: Re: [Boost-build] What is _message_
From: Edward Diener (eldiener_at_[hidden])
Date: 2016-06-03 09:41:41

On 6/3/2016 9:18 AM, Rene Rivera wrote:
> On Fri, Jun 3, 2016 at 7:17 AM, Edward Diener <eldiener_at_[hidden]
> <mailto:eldiener_at_[hidden]>> wrote:
>
>     I am seeing in the predef.jam file a call to rule _message_ but I
>     can find no information on it. Does this exist in some Boost Build
>     jam file ?
>
>
> That's not a rule.. It's a variable. Or rather, a group of variables.

How does the syntax:

_message_(/check/predef//predef_check_cc_$(key))

apply to a Boost Build variable ? I thought Boost Build variables ( 
which are list of strings ) had to use [n] to access a string in the list.