[NTG-context] French spacing in ConTeXt

[Tomas Hala]

Hi all, 

the following code works for the default roman family but not for tt-family.

\setuplayout[width=30cc,height=70cc,topspace=0cc]
\def\sample{\input knuth \par\thinrule\par}
\starttext
\setuplanguage[en][spacing=packed] \mainlanguage[en] \sample
\setuplanguage[en][spacing=broad]  \mainlanguage[en] \sample
\tt
\setuplanguage[en][spacing=packed] \mainlanguage[en] \sample
\setuplanguage[en][spacing=broad]  \mainlanguage[en] \sample
\stoptext

As far as I know, the broad spacing (=non-frenchspacing) should work 
also for typewriter. How could I enable it? 

Best wishes,

Tomáš

P. S.
LaTeX code (only for comparison) works for both:

\documentclass{article}
\begin{document}
\frenchspacing    \input knuth
\nonfrenchspacing \input knuth
\tt
\frenchspacing    \input knuth
\nonfrenchspacing \input knuth
\end{document}