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#!/bin/bash
# vim: set filetype=sh :
# file: example.ia-expr
# copyright: Bernd Schumacher <bernd.schumacher@hpe.com> (2007-2020)
# license: GNU General Public License, version 3
# description: example using expressions
# see also: test.ia-expr
set -e
set -u
. ./ia
sub()
{
eval "$ia_init"
# AC"DC
ia_add "echo \"AC\\\"DC\"" # [ "$(eval "echo \"AC\\\"DC\"")" = 'AC"DC' ]
# dc="" AC$dc
ia_add "dc=\"\""
ia_add "echo \"AC\$dc\""
# dc="DC" AC$dc
ia_add "dc=\"DC\""
ia_add "echo \"AC\$dc\""
# ACDC$
ia_add "echo \"ACDC$\""
ia_add "cat <<'END'
ACDC$
END
"
ia_add "echo \"ACDC$\""
# AC\DC
ia_add "echo \"AC\\\\DC\"" # [ "AC\\\\DC" = 'AC\\DC' ]
ia_add "echo \"AC\\DC\"" # [ "AC\\DC" = 'AC\DC' ]
ia_add "cat <<'END'
AC\\DC
END
"
ia_add "echo 'AC\\DC'"
ia_add "echo one; echo two; echo three"
ia_add "echo one"
ia_add "echo two"
# number of backslashes 1, 3, 7, 15, 31, 63 ...
ia_add "eval \"echo \\\"one\\\"\""
ia_add "eval \"eval \\\"echo \\\\\\\"two\\\\\\\"\\\"\""
ia_add "eval \"eval \\\"eval \\\\\\\"echo \\\\\\\\\\\\\\\"three\\\\\\\\\\\\\\\"\\\\\\\"\\\"\""
ia_add "eval \"eval \\\"eval \\\\\\\"eval \\\\\\\\\\\\\\\"echo \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"four\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"\\\\\\\\\\\\\\\"\\\\\\\"\\\"\""
ia
}
eval "$ia_init"
ia_add "sub <-i>"
ia
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