expression paste broken in r-devel?

Hi,

The following expression() is silently ignored in r-devel (r50697):

plot(1:10)
text(5, 5, expression(paste("foo ", alpha)))

Am I the only one having this problem? example(plotmath) runs but all
constructs of the form expression(paste()) do not show up in the
plots.

h.

+---
| Hiroyuki Kawakatsu
| Business School, Dublin City University
| Dublin 9, Ireland. Tel +353 (0)1 700 7496