commit 16a1720b5b87157d1777da0cd85efb9cb1baff20
author David Tolnay <dtolnay@gmail.com> Sun Dec 31 10:47:24 2017 -0500
committer David Tolnay <dtolnay@gmail.com> Sun Dec 31 10:49:43 2017 -0500
tree 890ec88c7302615077918ca01dc93f5f79f6998a
parent 92ab1b4e3e3bc6defa7716c95cb0af0a6d66f0f6

Span::unstable to expose the proc_macro::Span

src/lib.rs

diff --git a/src/lib.rs b/src/lib.rs
index de3a2e5..62fa595 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -162,6 +162,12 @@
         Span(imp::Span::def_site())
     }
 
+    /// This method is only available when the `"unstable"` feature is enabled.
+    #[cfg(feature = "unstable")]
+    pub fn unstable(self) -> proc_macro::Span {
+        self.0.unstable()
+    }
+
     #[cfg(procmacro2_unstable)]
     pub fn source_file(&self) -> SourceFile {
         SourceFile(self.0.source_file())