From f0e9f6dd935ba45e1947799eff43203279e0f202 Mon Sep 17 00:00:00 2001
From: Mathieu Ferment <mathieu.ferment@gmail.com>
Date: Tue, 24 Jan 2017 20:53:25 +0100
Subject: [PATCH 1/2] Enable autocomplete for ask()

---
 src/functions.php | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/functions.php b/src/functions.php
index df608db06..d8a3056f1 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -546,11 +546,16 @@ function has($name)
 /**
  * @param string $message
  * @param string|null $default
+ * @param string[]|null $suggestedChoices
  * @return string
  * @codeCoverageIgnore
  */
-function ask($message, $default = null)
+function ask($message, $default = null, $suggestedChoices = null)
 {
+    if (($suggestedChoices !== null) && (empty($suggestedChoices))) {
+        throw new \InvalidArgumentException('Suggested choices should not be empty');
+    }
+
     if (isQuiet()) {
         return $default;
     }
@@ -561,6 +566,10 @@ function ask($message, $default = null)
 
     $question = new Question($message, $default);
 
+    if (empty($suggestedChoices) === false) {
+        $question->setAutocompleterValues($suggestedChoices);
+    }
+
     return $helper->ask(input(), output(), $question);
 }
 

From dc3e7df7ae7a390fc559721a24d1588b71dc652d Mon Sep 17 00:00:00 2001
From: Mathieu Ferment <mathieu.ferment@gmail.com>
Date: Wed, 25 Jan 2017 10:01:50 +0100
Subject: [PATCH 2/2] Update CHANGELOG.md

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 928d9f698..332d76639 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 ### Changed
 - `add()` now merges configuration options recursively [#962](https://github.com/deployphp/deployer/pull/962)
 - Added `writable_chmod_recursive` boolean option to enable non-recursive `chmod`
+- `ask()` now supports autocomplete [#978](https://github.com/deployphp/deployer/pull/978)
 
 ## v4.1.0
 [v4.0.2...v4.1.0](https://github.com/deployphp/deployer/compare/v4.0.2...v4.1.0)