[metapost] is it possible to strike glyphs' paths?

[Stephan Hennig]

schrieb Laurent Méhats:

>       txt_wd:=txt_wd+
>         (xxpart tkn)*xpart urcorner (sub_str infont fnt_str);
>     endfor

An interesting workaround.  If a btex..etex picture is created by LaTeX,
is the font referenced in fnt_str always available to MetaPost without
adding a +fontmap statement (in TeXLive 2010)?

Best regards,
Stephan Hennig