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# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
# Change bash to expand the next word following aliases ending with a space
# that are more than one level deep. Change how bash handles the expand-next-word
# flag when recognizing a reserved word.
#
# Bash never did this before post-bash-5.2
: ${THIS_SH:=./bash}
shopt -s expand_aliases 2>/dev/null
alias a1='echo '
alias a2=a1
alias foo=bar
alias x=xtra
a2 foo
unalias foo
alias e='echo '
alias f='foo '
alias b=bar
e f b x
alias e=echo
a2 foo;e x
unalias e f b
alias e=echo
alias foo='bar '
alias c=';'
a2 foo c e x
unalias foo e c
alias file='/dev/null ;'
alias e=echo
alias foo='bar '
alias c='< '
alias x=xtra
a2 foo c file e x
unalias a1 a2 e foo c x file
alias foo=bar
alias al=' '
alias foo=bar
al for foo in v
do echo foo=$foo bar=$bar
done
al case foo in foo) echo foo;; bar) echo bar;; esac
# one difference between bash in default and posix modes is that default mode
# bash allows reserved words to be aliased, which posix says is a no-no
${THIS_SH} -c '
shopt -s expand_aliases 2>/dev/null
alias al=" "
alias foo=bar
alias for=echo
al for foo in v
do echo foo=$foo bar=$bar
done' bash
${THIS_SH} -o posix -c '
alias al=" "
alias foo=bar
alias for=echo
al for foo in v
do echo foo=$foo bar=$bar
done' bash
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