simple usage question: `merge from current' operation

[Kai Großjohann]

Suppose a project has to branches: the head is the current,
development, release, and there is a stable branch, as well.

Suppose I'm about to make a change which is supposed to go in both the
head and the stable branch.

What would be the easiest way to achieve this?  Is there an idiomatic
way to do it?

If it's a single file, I could memorize the revision numbers and then
do "cvs update -j1.42 -j1.43 foo.c".  Or I could do "cvs update -p
-r1.43 > foo.c.new; mv foo.c.new foo.c".  I'm sure there are more ways.

tia,
kai
-- 
I like BOTH kinds of music.