Enables tag matcher and

https://github.com/Baystation12/Baystation12/pull/11642

tools/indentation.awk

@@ -0,0 +1,32 @@
+#! /usr/bin/awk -f
+
+# Finds incorrect indentation of absolute path definitions in DM code
+# For example, the following fails on the indicated line:
+
+#/datum/path/foo
+#	x = "foo"
+# /datum/path/bar // FAIL
+#	x = "bar"
+
+{
+	if ( comma != 1 ) { # No comma/'list('/etc at the end of the previous line
+		if ( $0 ~ /^[\t ]+\/[^/*]/ ) { # Current line's first non-whitespace character is a slash, followed by something that is not another slash or an asterisk
+			print FILENAME, ":", $0
+			fail = 1
+		}
+	}
+
+	if ($0 ~ /,[\t ]*\\?\r?$/ || # comma at EOL
+	    $0 ~ /list[\t ]*\([\t ]*\\?\r?$/ || # start of a list()
+	    $0 ~ /pick[\t ]*\([\t ]*\\?\r?$/ ) { # start of a pick()
+		comma = 1
+	} else {
+		comma = 0
+	}
+}
+
+END {
+	if ( fail ) {
+		exit 1
+	}
+}