[Groff] passing groff special chars to pdfmark as bookmarks

[smoore]

All,

I have encoded unicode utf8 chars in groff's special char 
handling glyphs, \['e], \[^a], ect. 

These work fine in the body of the text, however, when a
macro pulls text for bookmarks, the character disappears. 

I've thought about protecting the glyph, however, i am thinking
now i have to backtranslate to an octal or hex or actual char. 

Anyone have success and willing to comment on how to include
special chars in pdfmark bookmarks please do.