Truncate long lines.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/rope.rs b/src/rope.rs
index c5e9aa1..5f4fca8 100644
--- a/src/rope.rs
+++ b/src/rope.rs
@@ -278,4 +278,21 @@ impl Rope {
         }
         return self.len();
     }
+
+    pub fn char(&self, index: usize) -> usize {
+        if index == 0 {
+            return 0;
+        }
+        let mut count = 1;
+        for i in 1..self.len() {
+            if !self.is_char_boundary(i) {
+                continue;
+            }
+            if count == index {
+                return i;
+            }
+            count += 1;
+        }
+        return self.len();
+    }
 }