more examples - particularly multiple captures

examples/errors.rs

@@ -0,0 +1,26 @@
+extern crate lua_patterns;
+
+fn main() {
+   let bad = [
+    ("bonzo %","malformed pattern (ends with '%')"),
+    ("bonzo (dog%(","unfinished capture"),
+    ("alles [%a%[","malformed pattern (missing ']')"),
+    ("bonzo (dog (cat)","unfinished capture"),
+    ("frodo %f[%A","malformed pattern (missing ']')"),
+    ("frodo (1) (2(3)%2)%1","invalid capture index %2"),
+    ];    
+    
+    fn error(s: &str) -> lua_patterns::PatternError {
+            lua_patterns::PatternError(s.into())
+    }
+    
+    for p in bad.iter() {
+        let res = lua_patterns::LuaPattern::new_try(p.0);
+        if let Err(e) = res {
+            assert_eq!(e, error(p.1));
+        } else {
+            println!("'{}' was fine",p.0);
+        }
+   } 
+    
+}

examples/multiple_captures.rs

@@ -0,0 +1,9 @@
+extern crate lua_patterns as lp;
+
+fn main() {
+    let mut p = lp::LuaPattern::new("%s*(%d+)%s+(%S+)");
+    if let Some((int,rest)) = p.match_maybe_2(" 233   hello dolly") {
+        assert_eq!(int,"233");
+        assert_eq!(rest,"hello");
+    }
+}