#   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/>.
#

# these are ok

function a=2
{
	printf "FUNCNAME: %s\n" $FUNCNAME
}

function 11111
{
	printf "FUNCNAME: %s\n" $FUNCNAME
}

# but this is still not
function sys$read
{
	printf "FUNCNAME: %s\n" $FUNCNAME
}
	
declare -f
set -o posix
declare -f
set +o posix

a\=2

<(:) ()
{
	echo $FUNCNAME
}
\<\(:\)
type '<(:)'

break()
{
	echo inside function $FUNCNAME
}

testfunc()
{
	echo type
	type break
	type -t break
	echo command -v
	command -v break
	echo command -V
	command -V break

	echo type -a
	type -a break
	echo declare
	declare -f break
	echo execution
	break
}

set -o posix
echo posix mode:
testfunc

set +o posix
echo default mode:
testfunc
unset -f testfunc break

# but in posix mode, declaring such a function is a fatal error
( set -o posix
break()
{
        echo FUNCNAME: $FUNCNAME
}
echo after
)

# in posix mode, functions whose names are invalid identifiers are
# no longer fatal errors
( set -o posix
!! () { fc -s "$@" ; }
type \!\!
)

# you can create such functions and print them in posix mode
set -o posix
!! () { fc -s "$@" ; }
type '!!'
set +o posix