update elements and fix some bugs

lib/src/prism/tests/languages/scheme/function_feature.test

Index: lib/src/prism/tests/languages/scheme/function_feature.test
diff --git a/lib/src/prism/tests/languages/scheme/function_feature.test b/lib/src/prism/tests/languages/scheme/function_feature.test
new file mode 100644
index 0000000000000000000000000000000000000000..25c804634e35a69f50b5b872b0fbae2c7adbcdfd
--- /dev/null
+++ b/lib/src/prism/tests/languages/scheme/function_feature.test
@@ -0,0 +1,17 @@
+(fl= 1 2)
+(flmin 2 3)
+(exact? 2)
+(inexact->exact 3)
+
+----------------------------------------------------
+
+[
+	["punctuation", "("], ["function", "fl="], ["number", "1"], ["number", "2"], ["punctuation", ")"],
+	["punctuation", "("], ["function", "flmin"], ["number", "2"], ["number", "3"], ["punctuation", ")"],
+	["punctuation", "("], ["function", "exact?"], ["number", "2"], ["punctuation", ")"],
+	["punctuation", "("], ["function", "inexact->exact"], ["number", "3"], ["punctuation", ")"]
+]
+
+----------------------------------------------------
+
+Checks for functions.