> Without trying to complicate the discussion, I used
>
> .\"
>
> Not
> \#
>
> The former is a pure comment. It does not enter into any processing.
This is not correct. The escape `\"' strips everything to the end of
the line but *not* the final newline. Consequently,
.\"
is equivalent to
.<newline>
A leading dot without a following macro name is an undefined request
that gets ignored.
On the other hand, `\#' ignores everything to the end of the line
*including* the final newline. This means that e.g.
Test
\# foo
Test
produces
Test Test
as expected. It's a matter of taste whether you are going to use
`.\"' or `\#' for full-line comments.
Werner