[Groff] environment copy

[Bertrand Garrigues]

Hi,

I was trying to understand how environment switch and copy works.  This
example:

.ev small
.ps 6
.ev
First partial line, in environment: \n[.ev]
.ev small
Second partial line, in environment: \n[.ev]
.ev
Third partial line, in environment: \n[.ev]
.evc small
Fourth partial line, in environment: \n[.ev]
.br
.ev small
Fifth partial line, in environment: \n[.ev]
.br

produces the following output:

Fourth partial line, in environment: 0
Second partial line, in environment: small Fifth partial line, in environment: 
small

Why are the partial lines of environment 0 droped after the .evc?  I
would expect groff to print "First partial..."  and "Third partial..."
with point size 6 just before "Fourth partial...".

Regards,

--
Bertrand Garrigues