t/pluseq11.sh

   1 #!/bin/sh
   2 # Copyright (C) 2010-2024 Free Software Foundation, Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16
  17 # Check for bug in variable concatenation with '+=': an extra backslash
  18 # is erroneously retained in the final value.
  19 # See also sister test 'pluseq11b.sh'.
  20
  21 . test-init.sh
  22
  23 cat >>configure.ac <<'END'
  24 AC_OUTPUT
  25 END
  26
  27 cat > Makefile.am <<'END'
  28 ## Use more line continuation to ensure we are robust and can (hopefully)
  29 ## cope any number of them, and not just one
  30 FOO = \
  31 \
  32 \
  33 bar
  34 ## Both these two variable additions are required to trigger the bug.
  35 FOO +=
  36 FOO += baz
  37
  38 .PHONY: test
  39 test:
  40         case '$(FOO)' in *\\*) exit 1;; *) exit 0;; esac
  41 END
  42
  43 $ACLOCAL
  44 $AUTOMAKE
  45
  46 grep '^ *FOO *=.*\\.' Makefile.in && exit 1
  47
  48 $AUTOCONF
  49 ./configure
  50 $MAKE test
  51
  52 :