gash/tests/variable-or.org

• variable-not-or
• variable-or-doublequote
• variable-or-empty
• variable-or
• variable-or-slash
• variable-or-variable

;;; Gash – Guile As SHell ;;; Copyright © 2016, 2017, 2018 R.E.W. van Beusekom <rutger.van.beusekom@gmail.com> ;;; Copyright © 2018, 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> ;;; Copyright © 2019 Timothy Sample <samplet@ngyro.com> ;;; ;;; This file is part of Gash. ;;; ;;; Gash is free software: you can redistribute it and/or modify ;;; it under the terms of the GNU General Public License as published by ;;; the Free Software Foundation, either version 3 of the License, or ;;; (at your option) any later version. ;;; ;;; Gash is distributed in the hope that it will be useful, ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;;; GNU General Public License for more details. ;;; ;;; You should have received a copy of the GNU General Public License ;;; along with Gash. If not, see <http://www.gnu.org/licenses/>.

variable-not-or

  foo=baz
  echo ${foo-bar}

:STDOUT:

  baz

variable-or-doublequote

  CPPFLAGS=${CPPFLAGS-"
  -I ${srcdest}src
  "}
  echo $CPPFLAGS

:STDOUT:

  -I src

variable-or-empty

  echo ${bindir-}

:STDOUT:

variable-or

  echo ${foo-bar}

:STDOUT:

  bar

variable-or-slash

  echo ${foo-bar/}

variable-or-variable

  prefix=/usr
  echo ${bindir-$prefix/bin}

:STDOUT:

  /usr/bin