Rust: Add test for character literals.

tests/ctags/test_input.rs

@@ -6,6 +6,15 @@ use std::io::stdio::println;
 use test_input2::*;
 mod test_input2;
 
+fn lifetime_and_char<'lifetime>(_: &'lifetime int)
+{
+	let s = '"';
+	let s = '}';
+	let s = '\'';
+	let s = '\uffff';
+	fn not_hidden_by_char() {}
+}
+
 fn preserve_string_delims(_bar: extern r#"C"# fn()) {}
 
 pub struct A

tests/ctags/test_input.rs.tags

@@ -27,9 +27,11 @@ foo
 foo_field_1Ì8ÎFooÖ0
 gfuncÌ16Í<X:Testable+DoZ>(x:&X)Ö0
 ignoreÌ65536Ö0
+lifetime_and_charÌ16Í<'lifetime>(_: &'lifetime int)Ö0
 mainÌ16Í()Ö0
 my_methodÌ128Í(&self,_:int)ÎFooÖ0
 nestedÌ16Í()ÎmainÖ0
+not_hidden_by_charÌ16Í()Îlifetime_and_charÖ0
 only_fieldÌ8ÎS1Ö0
 preserve_string_delimsÌ16Í(_bar: extern r#"C"# fn())Ö0
 sizeÌ16384Ö0