my ($msg_if_onlyone) = @_;
# If there is only one .changes file, fail with $msg_if_onlyone,
# or if that is undef, be a no-op.
# Returns the changes file to report to the user.
my $pat = changespat $version;
my ($msg_if_onlyone) = @_;
# If there is only one .changes file, fail with $msg_if_onlyone,
# or if that is undef, be a no-op.
# Returns the changes file to report to the user.
my $pat = changespat $version;