Re: bin/50557: build.sh does not run on Nixos

[Robert Elz <kre%munnari.OZ.AU@localhost>]

    Date:        Mon, 30 May 2016 11:17:38 -0400
    From:        christos%zoulas.com@localhost (Christos Zoulas)
    Message-ID:  <20160530151738.DC92C17FDAB%rebar.astron.com@localhost>

  | Ah, it only applies to alias expansion.

Aliases and reserved words (want to run the old v6 if command, \if will
do it - if you have it installed, of course)  That is, stuff recognised at
parse time.

kre