This is particularly useful on operating systems that don't ship
Perl as part of the base system (eg. FreeBSD) while still working
just as well as it did before on Linux.
In one case (src/rpc/genprotocol.pl) the interpreter path was
missing altogether.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
We do not need a separate check forbidding whitespace
after the opening parenthesis after a keyword -
we forbid it after all of them.
The only allowed whitespace after an opening parenthesis
is a newline, tune the regex to reflect that.
Instead of matching multiple characters before the parenthesis,
only check for a single whitespace, which is much less cpu-intensive.
This only matches a few dozen of places where they are on an separate
line, filter out those with a separate regex.
