From 80401da12e47c6b3cce0e9921980ec49b1b03a10 Mon Sep 17 00:00:00 2001
From: Simon Sapin <simon.sapin@exyr.org>
Date: Sun, 5 Oct 2014 12:15:59 +0100
Subject: [PATCH] String::truncate doc: also fails if not a char boundary

---
 src/libcollections/string.rs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/libcollections/string.rs b/src/libcollections/string.rs
index 2cc225f50bc3d..43fcdfae4d635 100644
--- a/src/libcollections/string.rs
+++ b/src/libcollections/string.rs
@@ -613,7 +613,8 @@ impl String {
     ///
     /// # Failure
     ///
-    /// Fails if `len` > current length.
+    /// Fails if `new_len` > current length,
+    /// or if `new_len` is not a character boundary.
     ///
     /// # Example
     ///
@@ -624,9 +625,9 @@ impl String {
     /// ```
     #[inline]
     #[unstable = "the failure conventions for strings are under development"]
-    pub fn truncate(&mut self, len: uint) {
-        assert!(self.as_slice().is_char_boundary(len));
-        self.vec.truncate(len)
+    pub fn truncate(&mut self, new_len: uint) {
+        assert!(self.as_slice().is_char_boundary(new_len));
+        self.vec.truncate(new_len)
     }
 
     /// Appends a byte to this string buffer.