Allow period character as word boundary

src/parse/formulas.rs

@@ -542,10 +542,11 @@ mod tests
 	#[test]
 	fn parse_compare()
 	{
-		assert_eq!(format_formula("X >= 0"), "X >= 0");
+		assert_eq!(format_formula("X>=0."), "X >= 0");
-		assert_eq!(format_formula("N >= 0"), "N >= 0");
+		assert_eq!(format_formula("N>=0."), "N >= 0");
-		assert_eq!(format_formula("n < 0"), "n < 0");
+		assert_eq!(format_formula("n<0."), "n < 0");
-		assert_eq!(format_formula("n >= 0"), "n >= 0");
+		assert_eq!(format_formula("n>=0."), "n >= 0");
+		assert_eq!(format_formula("p(0)>=q."), "p(0) >= q");
 	}
 
 	#[test]

src/parse/helpers.rs

@@ -28,6 +28,7 @@ fn is_character_word_boundary(c: char) -> bool
 		| '%'
 		| '|'
 		| '#'
+		| '.'
 			=> true,
 		_ => false,
 	}

src/parse/literals.rs

@@ -185,7 +185,7 @@ mod tests
 		assert!(integer("10000a").is_err());
 		assert!(integer("+10000a").is_err());
 		assert!(integer("-10000a").is_err());
-		assert!(integer("1.5").is_err());
+		assert_eq!(integer("1.5"), Ok((".5", 1)));
 		assert!(integer("a").is_err());
 		assert!(integer("-").is_err());
 		assert!(integer(" ").is_err());