From 86e3994e87b264f874ea1620fc31f42e3744aad0 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Fri, 6 Dec 2019 22:34:45 +0900
Subject: [PATCH] Properly clear list when --header-lines not filled on reload

---
 CHANGELOG.md    | 4 ++++
 src/core.go     | 4 +++-
 test/test_go.rb | 7 +++++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91ff961..3a1a47d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,10 @@ CHANGELOG
   ```sh
   fzf --multi --bind 'ctrl-l:select-all+execute(less {+f})+deselect-all'
   ```
+- Fixed bugs of reload action
+    - Not triggered when there's no match even when the command doesn't have
+      any placeholder expressions
+    - Screen not properly cleared when `--header-lines` not filled on reload
 
 0.19.0
 ------
diff --git a/src/core.go b/src/core.go
index 37513f5..985c177 100644
--- a/src/core.go
+++ b/src/core.go
@@ -295,7 +295,9 @@ func Run(opts *Options, revision string) {
 					}
 
 				case EvtHeader:
-					terminal.UpdateHeader(value.([]string))
+					header := value.([]string)
+					header = append(header, make([]string, opts.HeaderLines-len(header))...)
+					terminal.UpdateHeader(header)
 
 				case EvtSearchFin:
 					switch val := value.(type) {
diff --git a/test/test_go.rb b/test/test_go.rb
index 8d6fb37..55c8fc2 100755
--- a/test/test_go.rb
+++ b/test/test_go.rb
@@ -1647,6 +1647,13 @@ class TestGoFZF < TestBase
     tmux.send_keys :Space
     tmux.until { |lines| lines.item_count == 10 }
   end
+
+  def test_clear_list_when_header_lines_changed_due_to_reload
+    tmux.send_keys %(seq 10 | #{FZF} --header 0 --header-lines 3 --bind 'space:reload(seq 1)'), :Enter
+    tmux.until { |lines| lines.any? { |line| line.include?('9') } }
+    tmux.send_keys :Space
+    tmux.until { |lines| lines.none? { |line| line.include?('9') } }
+  end
 end
 
 module TestShell