EOT
my $expected = <<'EOT';
-cfg_enter_mode(meh)
+cfg_enter_mode((null), meh)
cfg_mode_binding(bindsym, Mod1,Shift, x, (null), (null), (null), resize grow)
cfg_mode_binding(bindcode, Mod1, 44, (null), (null), (null), resize shrink)
cfg_mode_binding(bindsym, Mod1, x, --release, (null), (null), exec foo)
EOT
$expected = <<'EOT';
-cfg_enter_mode(yo)
+cfg_enter_mode((null), yo)
cfg_mode_binding(bindsym, (null), x, (null), (null), (null), resize shrink left)
ERROR: CONFIG: Expected one of these tokens: <end>, '#', 'set', 'bindsym', 'bindcode', 'bind', '}'
ERROR: CONFIG: (in file <stdin>)