From 423986996a2957cbd1c3975d5f7d64cffe6d946d Mon Sep 17 00:00:00 2001
From: Michael Kelley <michael.a.kelley@gmail.com>
Date: Tue, 7 Aug 2018 23:43:55 -0700
Subject: [PATCH] Handle incomplete ESC sequence in typeahead buffer (#1350)

If an ESC char is found while processing characters,
continue to check for characters. This prevents fzf from
prematurely exiting.

Close #1349
---
 src/tui/light.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/tui/light.go b/src/tui/light.go
index e223f4ab..1098d591 100644
--- a/src/tui/light.go
+++ b/src/tui/light.go
@@ -297,6 +297,7 @@ func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
 	}
 	buffer = append(buffer, byte(c))
 
+	pc := c
 	for {
 		c, ok = r.getch(true)
 		if !ok {
@@ -306,9 +307,13 @@ func (r *LightRenderer) getBytesInternal(buffer []byte, nonblock bool) []byte {
 				continue
 			}
 			break
+		} else if c == ESC && pc != c {
+			retries = r.escDelay / escPollInterval
+		} else {
+			retries = 0
 		}
-		retries = 0
 		buffer = append(buffer, byte(c))
+		pc = c
 	}
 
 	return buffer