scanner: munch full comment lines

Munch lines full comment lines, regular expression matches lines that
start by space or tab, then # follows, finally anything including one
single line break.

Call reset_pos() to ensure error reporting location is not puzzled.

Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1196
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/shell/testcases/comments/dumps/comments_0.nft b/tests/shell/testcases/comments/dumps/comments_0.nft
new file mode 100644
index 00000000..82ae510b
--- /dev/null
+++ b/tests/shell/testcases/comments/dumps/comments_0.nft
@@ -0,0 +1,12 @@
+table inet x {
+	set y {
+		type ipv4_addr
+		elements = { 2.2.2.2, 3.3.3.3 }
+	}
+
+	chain y {
+		icmpv6 type { destination-unreachable, packet-too-big } accept
+		icmp type { 1, 2 } accept
+		tcp dport { 21, 2121 } counter packets 0 bytes 0 accept
+	}
+}