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1. clacke (clacke@social.heldscal.la)'s status on Saturday, 03-Mar-2018 20:58:07 EST clacke
   Does anyone know what `${1+"$@"}` in a generated #racket launcher does?
   
   A few quick tests don't show me that it's any different from just "$@", and I don't see anything on a "+" in that position when I look in https://www.gnu.org/software/bash/manual/bashref.html#Shell-Parameter-Expansion .
   1. Alexandre Oliva (lxoliva@social.libreplanetbr.org)'s status on Saturday, 03-Mar-2018 22:31:30 EST Alexandre Oliva

      in reply to
      it is equivalent to "$@", except in old buggy shells that expanded "$@" to "" (a single zero-length argument) when no arguments were passed in. the 1+ part worked around that, discarding the erroneous empty argument if $1 was not defined