Use multiline string of ipv6 pattern.

Author: SimY4

core/src/test/scala/com/github/simy4/coregex/core/CoregexParserSuite.scala

@@ -31,24 +31,24 @@ class CoregexParserSuite extends ScalaCheckSuite with CoregexArbitraries {
       Pattern.compile("\\d{4}-[01]\\d-[0-3]\\dT[0-2]\\d:[0-5]\\d:[0-5]\\d([+-][0-2]\\d:[0-5]\\d|Z)"),
       Pattern.compile("((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9])"),
       Pattern.compile(
-        "(\n" +
-          "([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|          # 1:2:3:4:5:6:7:8\n" +
-          "([0-9a-fA-F]{1,4}:){1,7}:|                         # 1::                              1:2:3:4:5:6:7::\n" +
-          "([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|         # 1::8             1:2:3:4:5:6::8  1:2:3:4:5:6::8\n" +
-          "([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|  # 1::7:8           1:2:3:4:5::7:8  1:2:3:4:5::8\n" +
-          "([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|  # 1::6:7:8         1:2:3:4::6:7:8  1:2:3:4::8\n" +
-          "([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|  # 1::5:6:7:8       1:2:3::5:6:7:8  1:2:3::8\n" +
-          "([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|  # 1::4:5:6:7:8     1:2::4:5:6:7:8  1:2::8\n" +
-          "[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|       # 1::3:4:5:6:7:8   1::3:4:5:6:7:8  1::8  \n" +
-          ":((:[0-9a-fA-F]{1,4}){1,7}|:)|                     # ::2:3:4:5:6:7:8  ::2:3:4:5:6:7:8 ::8       ::     \n" +
-          "fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|     # fe80::7:8%eth0   fe80::7:8%1     (link-local IPv6 addresses with zone index)\n" +
-          "::(ffff(:0{1,4}){0,1}:){0,1}\n" +
-          "((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}\n" +
-          "(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|          # ::255.255.255.255   ::ffff:255.255.255.255  ::ffff:0:255.255.255.255  (IPv4-mapped IPv6 addresses and IPv4-translated addresses)\n" +
-          "([0-9a-fA-F]{1,4}:){1,4}:\n" +
-          "((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}\n" +
-          "(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])           # 2001:db8:3:4::192.0.2.33  64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address)\n" +
-          ")",
+        """(
+          |([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|          # 1:2:3:4:5:6:7:8
+          |([0-9a-fA-F]{1,4}:){1,7}:|                         # 1::                              1:2:3:4:5:6:7::
+          |([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|         # 1::8             1:2:3:4:5:6::8  1:2:3:4:5:6::8
+          |([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|  # 1::7:8           1:2:3:4:5::7:8  1:2:3:4:5::8
+          |([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|  # 1::6:7:8         1:2:3:4::6:7:8  1:2:3:4::8
+          |([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|  # 1::5:6:7:8       1:2:3::5:6:7:8  1:2:3::8
+          |([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|  # 1::4:5:6:7:8     1:2::4:5:6:7:8  1:2::8
+          |[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|       # 1::3:4:5:6:7:8   1::3:4:5:6:7:8  1::8
+          |:((:[0-9a-fA-F]{1,4}){1,7}|:)|                     # ::2:3:4:5:6:7:8  ::2:3:4:5:6:7:8 ::8       ::
+          |fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|     # fe80::7:8%eth0   fe80::7:8%1     (link-local IPv6 addresses with zone index)
+          |::(ffff(:0{1,4}){0,1}:){0,1}
+          |((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}
+          |(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|          # ::255.255.255.255   ::ffff:255.255.255.255  ::ffff:0:255.255.255.255  (IPv4-mapped IPv6 addresses and IPv4-translated addresses)
+          |([0-9a-fA-F]{1,4}:){1,4}:
+          |((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\\.){3,3}
+          |(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])           # 2001:db8:3:4::192.0.2.33  64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address)
+          |)""".stripMargin,
         Pattern.COMMENTS
       ),
       Pattern.compile(