macports_version

[Andrew Moore]

On May 20, 2018, at 8:23 AM, Ryan Schmidt <ryandesign at macports.org> wrote:
> 
> Why is macports_version a proc and not an option?

To make it read-only?  It seems procs and trace are Tcl’s way of defining constants <http://wiki.tcl.tk/1734>.
-AM
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