update elements and fix some bugs

lib/src/prism/tests/languages/bison/c_feature.test

Index: lib/src/prism/tests/languages/bison/c_feature.test
diff --git a/lib/src/prism/tests/languages/bison/c_feature.test b/lib/src/prism/tests/languages/bison/c_feature.test
new file mode 100644
index 0000000000000000000000000000000000000000..a131ec3d8490f5f4631fe9e941326a5694ef55c0
--- /dev/null
+++ b/lib/src/prism/tests/languages/bison/c_feature.test
@@ -0,0 +1,56 @@
+%{
+	#include <stdio.h>
+%}
+%code {
+	if(foo) {
+
+	}
+}
+%%
+exp:
+	NUM {
+		$$ = f($3, $4);
+		@$.first_column = @1.first_column;
+		$result = $left + $<itype>1;
+	}
+%%
+
+----------------------------------------------------
+
+[
+	["bison", [
+		["c", [
+			["delimiter", "%{"],
+			["macro", ["#include ", ["string", "<stdio.h>"]]],
+			["delimiter", "%}"]
+		]],
+		["keyword", "%code"],
+		["c", [
+			["delimiter", "{"],
+			["keyword", "if"], ["punctuation", "("], "foo", ["punctuation", ")"],
+			["punctuation", "{"], ["punctuation", "}"],
+			["delimiter", "}"]
+		]],
+		["punctuation", "%%"],
+		["property", "exp"], ["punctuation", ":"],
+		"\r\n\tNUM ",
+		["c", [
+			["delimiter", "{"],
+			["bison-variable", ["$$"]], ["operator", "="],
+			["function", "f"], ["punctuation", "("],
+			["bison-variable", ["$3"]], ["punctuation", ","],
+			["bison-variable", ["$4"]], ["punctuation", ")"], ["punctuation", ";"],
+			["bison-variable", ["@$"]], ["punctuation", "."], "first_column ", ["operator", "="],
+			["bison-variable", ["@1"]], ["punctuation", "."], "first_column", ["punctuation", ";"],
+			["bison-variable", ["$result"]], ["operator", "="],
+			["bison-variable", ["$left"]], ["operator", "+"],
+			["bison-variable", ["$", ["punctuation", "<"], "itype", ["punctuation", ">"], "1"]], ["punctuation", ";"],
+			["delimiter", "}"]
+		]],
+		["punctuation", "%%"]
+	]]
+]
+
+----------------------------------------------------
+
+Checks for C inside Bison, along with special Bison variables.