Shell Programming and Scripting

fcn() {
	echo untraced
	set -x
	echo traced
	set +x
	echo 'more untraced'
}

#! /bin/ksh

func1 ()
{
     set -x     # scope is inside function func1()
     ... rest of the function...
     return 0
}

# main()

set -x     # scope is only in main()

do_something
func1
do something_else

exit 0

#! /bin/ksh

func1 ()
{
     $chFullDebug
     ...
     return 0
}


func2 ()
{
     $chFullDebug
     ...
     return 0
}

# main()

# typeset -x chFullDebug="set -xv"         # debug mode
typeset -x chFullDebug=""                  # normal mode

$chFullDebug

... rest of the code...
func1
func2

exit 0

#!/bin/ksh
settings=$(set +o)
func() {
	$settings
	printf '\t%s\n' "$@"
}
func "$@"

./tester a b c "d e"

ksh -xv tester a b c "d e"