From 16c12bf43bab64982b2aa5e328ee30db4c1216e2 Mon Sep 17 00:00:00 2001
From: Pavel Vorobyov <p.vorobyov@corp.mail.ru>
Date: Tue, 6 Nov 2018 14:16:27 +0300
Subject: [PATCH] fixed backescape the first word in buffer

---
 runebuf.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/runebuf.go b/runebuf.go
index 81d2da5..9fa655e 100644
--- a/runebuf.go
+++ b/runebuf.go
@@ -331,8 +331,8 @@ func (r *RuneBuffer) BackEscapeWord() {
 		if r.idx == 0 {
 			return
 		}
-		for i := r.idx - 1; i > 0; i-- {
-			if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
+		for i := r.idx - 1; i >= 0; i-- {
+			if !IsWordBreak(r.buf[i]) && (i == 0 || IsWordBreak(r.buf[i-1])) {
 				r.pushKill(r.buf[i:r.idx])
 				r.buf = append(r.buf[:i], r.buf[r.idx:]...)
 				r.idx = i