Merge pull request #2069 from dtolnay/prevspan

Make Cursor::prev_span public

Author: dtolnay

src/buffer.rs

@@ -364,7 +364,7 @@ impl<'a> Cursor<'a> {
 
     /// Returns the `Span` of the token immediately prior to the position of
     /// this cursor, or of the current token if there is no previous one.
-    pub(crate) fn prev_span(mut self) -> Span {
+    pub fn prev_span(mut self) -> Span {
         if start_of_buffer(self) < self.ptr {
             self.ptr = unsafe { self.ptr.sub(1) };
         }