From d43ead3daddf7cc7bd283de82dfcca99bd29c298 Mon Sep 17 00:00:00 2001
From: Takuya Abe <a.taku275@gmail.com>
Date: Wed, 1 Jan 2020 20:15:10 +0900
Subject: [PATCH] fix issue that edit-line returns multiple lines

---
 src/js/components/Terminal/index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/js/components/Terminal/index.js b/src/js/components/Terminal/index.js
index 33393d2..9ec0ea4 100644
--- a/src/js/components/Terminal/index.js
+++ b/src/js/components/Terminal/index.js
@@ -575,8 +575,10 @@ class Terminal extends Component {
   editLine = (args, printLine, runCommand, instance) => {
     const { summary } = instance.state;
     let index = args.line;
+
     if (index < 0) {
-      index = summary.length === 0 ? 0 : summary.length - index;
+      // when args.line is not provided, edit last line
+      index = summary.length === 0 ? 0 : summary.length - 1;
     }
     summary[index] = args._.join(' ');
     instance.setState({ summary });