Add an ignore! macro, remove support for nested block comments, re: #2755.

2012-09-07 16:58:27 -07:00
parent 249668f223
commit e9f5a099df
6 changed files with 26 additions and 28 deletions
--- a/src/libsyntax/ext/expand.rs
+++ b/src/libsyntax/ext/expand.rs
@@ -243,6 +243,7 @@ fn new_span(cx: ext_ctxt, sp: span) -> span {
 fn core_macros() -> ~str {
    return
 ~"{
+    macro_rules! ignore (($($x:tt)*) => (()))
    #macro[[#error[f, ...], log(core::error, #fmt[f, ...])]];
    #macro[[#warn[f, ...], log(core::warn, #fmt[f, ...])]];
    #macro[[#info[f, ...], log(core::info, #fmt[f, ...])]];