[- $optRawInput = 0 -]
[- $escmode = 0 -]
$optRawInput  [+ $optRawInput +]
$escmode      [+ $escmode  +]
'here is a \ '              -> [+ 'here is a \ ' +] 
'here is a \\ '             -> [+ 'here is a \\ ' +]
'here is a \\\ '            -> [+ 'here is a \\\ ' +]
'here is a \\\\ '           -> [+ 'here is a \\\\ ' +]
'here is a  '          -> [+ 'here is a ' +] 
'here is a \ '         -> [+ 'here is a \' +] 
'here is a \\ '        -> [+ 'here is a \\' +]
'here is a \\\ '       -> [+ 'here is a \\\' +]
'here is a \\\\ '      -> [+ 'here is a \\\\' +]
'here is a \ '        -> [+ 'here is a \' +] 
'here is a \\ '      -> [+ 'here is a \\' +]
'here is a \\\ '    -> [+ 'here is a \\\' +]
'here is a \\\\ '  -> [+ 'here is a \\\\' +]
[- $optRawInput = 1 -]
[- $escmode = 0 -]
$optRawInput  [+ $optRawInput +]
$escmode      [+ $escmode  +]
'here is a \ '              -> [+ 'here is a \ ' +] 
'here is a \\ '             -> [+ 'here is a \\ ' +]
'here is a \\\ '            -> [+ 'here is a \\\ ' +]
'here is a \\\\ '           -> [+ 'here is a \\\\ ' +]
'here is a  '          -> [+ 'here is a ' +] 
'here is a \ '         -> [+ 'here is a \' +] 
'here is a \\ '        -> [+ 'here is a \\' +]
'here is a \\\ '       -> [+ 'here is a \\\' +]
'here is a \\\\ '      -> [+ 'here is a \\\\' +]
'here is a \ '        -> [+ 'here is a \' +] 
'here is a \\ '      -> [+ 'here is a \\' +]
'here is a \\\ '    -> [+ 'here is a \\\' +]
'here is a \\\\ '  -> [+ 'here is a \\\\' +]
[- $optRawInput = 0 -]
[- $escmode = 1 -]
$optRawInput  [+ $optRawInput +]
$escmode      [+ $escmode  +]
'here is a \ '              -> [+ 'here is a \ ' +] 
'here is a \\ '             -> [+ 'here is a \\ ' +]
'here is a \\\ '            -> [+ 'here is a \\\ ' +]
'here is a \\\\ '           -> [+ 'here is a \\\\ ' +]
'here is a  '          -> [+ 'here is a ' +] 
'here is a \ '         -> [+ 'here is a \' +] 
'here is a \\ '        -> [+ 'here is a \\' +]
'here is a \\\ '       -> [+ 'here is a \\\' +]
'here is a \\\\ '      -> [+ 'here is a \\\\' +]
'here is a \ '        -> [+ 'here is a \' +] 
'here is a \\ '      -> [+ 'here is a \\' +]
'here is a \\\ '    -> [+ 'here is a \\\' +]
'here is a \\\\ '  -> [+ 'here is a \\\\' +]
[- $optRawInput = 1 -]
[- $escmode = 1 -]
$optRawInput  [+ $optRawInput +]
$escmode      [+ $escmode  +]
'here is a \ '              -> [+ 'here is a \ ' +] 
'here is a \\ '             -> [+ 'here is a \\ ' +]
'here is a \\\ '            -> [+ 'here is a \\\ ' +]
'here is a \\\\ '           -> [+ 'here is a \\\\ ' +]
'here is a  '          -> [+ 'here is a ' +] 
'here is a \ '         -> [+ 'here is a \' +] 
'here is a \\ '        -> [+ 'here is a \\' +]
'here is a \\\ '       -> [+ 'here is a \\\' +]
'here is a \\\\ '      -> [+ 'here is a \\\\' +]
'here is a \ '        -> [+ 'here is a \' +] 
'here is a \\ '      -> [+ 'here is a \\' +]
'here is a \\\ '    -> [+ 'here is a \\\' +]
'here is a \\\\ '  -> [+ 'here is a \\\\' +]