> The man page for pf.conf says at some point:
>
> "Any lines beginning with a # are treated as comments and ignored."
Yes, pf.conf(5) says that about the table files.
About the main pf.conf(5) file itself, it says:
Comments can be put anywhere in the file using a hash mark (`#'), and ex-
tend to the end of the current line.
> Now, if a comment line ends with "\", should the next line
> be also treated as comment? I noticed this behaviour and I do
> not know whether or not it should work like that.
Well, because you used \ to end the line, that # is not at the start of a
line. It is in the middle of a split line. And the previously described
behaviour therefore hapens.
> Many times, when we are trying to test a different setup, we
> duplicate a line, change something, and comment out the
> original line.
Well, the result is predictable.