From d8ccbd04b7d17e081fc28a5cebb020aaf9deaa35 Mon Sep 17 00:00:00 2001
From: Michael Davis <mcarsondavis@gmail.com>
Date: Thu, 27 Oct 2022 20:46:16 -0500
Subject: [PATCH] Fix panic on paste from blackhole register

The sequence "_y"_p panics because the blackhole register contains an
empty values vec. This causes a panic when pasting since it unwraps
a `slice::last`.
---
 helix-term/src/commands.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/helix-term/src/commands.rs b/helix-term/src/commands.rs
index 69870a279f3c..503b945e76bf 100644
--- a/helix-term/src/commands.rs
+++ b/helix-term/src/commands.rs
@@ -3434,7 +3434,12 @@ enum Paste {
 }
 
 fn paste_impl(values: &[String], doc: &mut Document, view: &mut View, action: Paste, count: usize) {
+    if values.is_empty() {
+        return;
+    }
+
     let repeat = std::iter::repeat(
+        // `values` is asserted to have at least one entry above.
         values
             .last()
             .map(|value| Tendril::from(value.repeat(count)))