{2}# Nested elements and other complex cases{0}

{2}# String with backtick inclusion{0}
{5}"x{11}`ls`{5}"{0}
{2}# Nested string{0}
{5}"x{11}`ls {5}"*.c"{11}`{5}"{0}
{2}# Not terminated at first "{0}
{5}"x{11}`ls{5}" # "{11}`{5}"{0} {2}#{0}

{2}# String with command inclusion{0}
{5}"x{7}$({8}ls{7}){5}"{0}

{2}# Nested command{0}
{7}$({8}ls{0} {8}-la{7}$({8}ls{0} {7}*.{8}c{7})){0}

{2}# Check strings and backticks in command{0}
{4}echo{0} {7}$({6}'ls'{0} {5}"."{0} {11}`ls`{0} {5}$'.'{0} {5}$"."{7}){0}

{2}# $( not terminated by ) if contains unterminated string{0}
{7}$({6}'x) # '{7}){0} {2}#{0}
{7}$({5}"x) # "{7}){0} {2}#{0}
{7}$({11}`x) # `{7}){0} {2}# Bash doesn't like this{0}
{7}$({5}$'x) # '{7}){0} {2}#{0}
{7}$({5}$"x) # "{7}){0} {2}#{0}

{2}# Parameter expansion{0}
{8}var{7}={8}abcdef{0}
{8}sub{7}={8}abc{0}
{8}rep{7}={6}'& '{0}
{4}echo{0} {10}${var/{9}$sub{10}/{5}"{10}${rep}{5}}"{10}}{0} {2}#{0}

{2}# '$' in variable{0}
{4}echo{0} {9}$${8}PID{0}
{4}echo{0} {9}$var{10}${var}{0}

{2}# Here-doc with internal elements{0}
{4}cat{0} {12}<<EOF{13}
	{9}$scalar{13}
	{10}${var}{13}
	{7}$(({3}1{7}+{3}2{7})){13}
	{7}$({4}pwd{7}){13}
	{11}`pwd`{13}
{12}EOF{0}

{2}# Quoted delimiter treats here-doc as simple string{0}
{4}cat{0} {12}<<"EOF"{13}
	$scalar
	${var}
	$((1+2))
	$(pwd)
	`pwd`
{12}EOF{0}

{2}# Escaped same as quoted{0}
{4}cat{0} {12}<<\EOF{13}
	$scalar
{12}EOF{0}

{2}# Nesting{0}
{4}echo{0} {5}"{7}$(({3}1{0} {7}+{0} {3}2{7})){5}"{0} {2}#{0}
{4}echo{0} {5}"{7}$[{3}1{0} {7}+{0} {3}2{7}]{5}"{0} {2}#{0}

{2}# Multiple nesting levels{0}
{7}$({8}ls{0} {8}-la{7}$({8}ls{0} {7}$({8}c{7}){0} {5}$'*.c'{0} {11}` {7}$({10}${s}{7}){11}`{7})){0}

{2}# Multi-line{0}
{7}$({8}ls{0} {7}|{0}
{8}more{7}){0}

{7}$({0}
{11}`x`{0}
{5}"x"{0}
{11}`ls`{0}
{5}$'x'{0}
{5}$"x"{0}
{7}){0}
{2}#end -- checks termination of previous{0}