There is more to it then a preference for \crlf, typescript loading introduces a lot of spurious white, that not always can be made to disappear. I tracked it down to a macro in type-ini.mkvi:
\def\font_typescript_process_typescript_file_and_store
{*\expandafter\let\expandafter\t_font_typescripts\csname\??typescriptfiles\currenttypefile\endcsname
A\ifx\t_font_typescripts\relax
B\font_typescript_process_typescript_store_indeed
C\fi
D\the\t_font_typescripts}
The ABCD*'s were added to see what happens. See the screen shot from one of my tests (<br/> results in \crlf but does not sit between text and fontswitch \switchtobodyfont). My guess is that the token register \t_font_typescripts is the source of the spaces, but I am not further than that. I have already mailed Hans Hagen about these findings.
[cid:AE3D66B6-9CD5-4377-B68D-AED490D0487E@fritz.box]
Hans van der Meer
On 2 May 2013, at 11:17 PM, Wolfgang Schuster