For: end for 1
For: loop body:
.  info ${:U!"#$%&'()*+,-./0-9\:;<=>?@A-Z[\\]_^a-z{|\}~}
make: Unclosed variable specification (expecting '}') for "" (value "!"") modifier U
make: "directive-for-escape.mk" line 19: !"
For: end for 1
For: loop body:
.  info ${:U!"\\\\#$%&'()*+,-./0-9\:;<=>?@A-Z[\\]_^a-z{|\}~}
make: Unclosed variable specification (expecting '}') for "" (value "!"\\") modifier U
make: "directive-for-escape.mk" line 29: !"\\
For: end for 1
For: loop body:
.  info ${:U\$}
make: "directive-for-escape.mk" line 41: $
For: loop body:
.  info ${:U${V}}
make: "directive-for-escape.mk" line 41: value
For: loop body:
.  info ${:U${V:=-with-modifier}}
make: "directive-for-escape.mk" line 41: value-with-modifier
For: loop body:
.  info ${:U$(V)}
make: "directive-for-escape.mk" line 41: value
For: loop body:
.  info ${:U$(V:=-with-modifier)}
make: "directive-for-escape.mk" line 41: value-with-modifier
For: end for 1
For: loop body:
.  info ${:U\${UNDEF\:U\\$\\$}
make: "directive-for-escape.mk" line 55: ${UNDEF:U\$
For: loop body:
.  info ${:U{{\}\}}
make: "directive-for-escape.mk" line 55: {{}}
For: loop body:
.  info ${:Uend\}}
make: "directive-for-escape.mk" line 55: end}
For: end for 1
For: loop body:
.  info ${:Ubegin<${UNDEF:Ufallback:N{{{}}}}>end}
make: "directive-for-escape.mk" line 66: begin<fallback>end
For: end for 1
For: loop body:
.  info ${:U\$}
make: "directive-for-escape.mk" line 74: $
For: end for 1
For: loop body:
.  info ${NUMBERS} ${:Ureplaced}
make: "directive-for-escape.mk" line 82: one two three replaced
For: end for 1
For: loop body:
.  info ${:Ureplaced}
make: "directive-for-escape.mk" line 92: replaced
For: end for 1
For: loop body:
.  info .        $$i: ${:Uinner}
.  info .      $${i}: ${:Uinner}
.  info .   $${i:M*}: ${:Uinner:M*}
.  info .      $$(i): $(:Uinner)
.  info .   $$(i:M*): $(:Uinner:M*)
.  info . $${i$${:U}}: ${i${:U}}
.  info .    $${i\}}: ${:Uinner\}}	# XXX: unclear why ForLoop_SubstVarLong needs this
.  info .     $${i2}: ${i2}
.  info .     $${i,}: ${i,}
.  info .  adjacent: ${:Uinner}${:Uinner}${:Uinner:M*}${:Uinner}
make: "directive-for-escape.mk" line 100: .        $i: inner
make: "directive-for-escape.mk" line 101: .      ${i}: inner
make: "directive-for-escape.mk" line 102: .   ${i:M*}: inner
make: "directive-for-escape.mk" line 103: .      $(i): inner
make: "directive-for-escape.mk" line 104: .   $(i:M*): inner
make: "directive-for-escape.mk" line 105: . ${i${:U}}: outer
make: "directive-for-escape.mk" line 106: .    ${i\}}: inner}
make: "directive-for-escape.mk" line 107: .     ${i2}: two
make: "directive-for-escape.mk" line 108: .     ${i,}: comma
make: "directive-for-escape.mk" line 109: .  adjacent: innerinnerinnerinner
exit status 0