From d813888dc74b80f386b1c5af2be17ddf86450da5 Mon Sep 17 00:00:00 2001
From: Eric Bottard <eric.bottard+github@gmail.com>
Date: Mon, 26 Mar 2018 11:38:26 +0200
Subject: [PATCH] Allow TAB completion on an empty buffer

Fixes #210
---
 .../shell/jline/JLineShellAutoConfiguration.java              | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/spring-shell-core/src/main/java/org/springframework/shell/jline/JLineShellAutoConfiguration.java b/spring-shell-core/src/main/java/org/springframework/shell/jline/JLineShellAutoConfiguration.java
index 3afc5ac5..c7653e11 100644
--- a/spring-shell-core/src/main/java/org/springframework/shell/jline/JLineShellAutoConfiguration.java
+++ b/spring-shell-core/src/main/java/org/springframework/shell/jline/JLineShellAutoConfiguration.java
@@ -174,7 +174,9 @@ public class JLineShellAutoConfiguration {
 				})
 				.parser(parser());
 
-		return lineReaderBuilder.build();
+		LineReader lineReader = lineReaderBuilder.build();
+		lineReader.unsetOpt(LineReader.Option.INSERT_TAB); // This allows completion on an empty buffer, rather than inserting a tab
+		return lineReader;
 	}
 
 	/**