Don't exit fzf by SIGINT while executing command (#2375)

Fix #2374

Co-authored-by: Junegunn Choi <junegunn.c@gmail.com>

src/terminal.go

@@ -157,6 +157,7 @@ type Terminal struct {
 	slab         *util.Slab
 	theme        *tui.ColorTheme
 	tui          tui.Renderer
+	executing    *util.AtomicBool
 }
 
 type selectedItem struct {
@@ -525,7 +526,8 @@ func NewTerminal(opts *Options, eventBox *util.EventBox) *Terminal {
 		startChan:   make(chan bool, 1),
 		killChan:    make(chan int),
 		tui:         renderer,
-		initFunc:    func() { renderer.Init() }}
+		initFunc:    func() { renderer.Init() },
+		executing:   util.NewAtomicBool(false)}
 	t.prompt, t.promptLen = t.parsePrompt(opts.Prompt)
 	t.pointer, t.pointerLen = t.processTabs([]rune(opts.Pointer), 0)
 	t.marker, t.markerLen = t.processTabs([]rune(opts.Marker), 0)
@@ -1713,13 +1715,17 @@ func (t *Terminal) executeCommand(template string, forcePlus bool, background bo
 		cmd.Stdout = os.Stdout
 		cmd.Stderr = os.Stderr
 		t.tui.Pause(true)
+		t.executing.Set(true)
 		cmd.Run()
+		t.executing.Set(false)
 		t.tui.Resume(true, false)
 		t.redraw()
 		t.refresh()
 	} else {
 		t.tui.Pause(false)
+		t.executing.Set(true)
 		cmd.Run()
+		t.executing.Set(false)
 		t.tui.Resume(false, false)
 	}
 	cleanTemporaryFiles()
@@ -1837,8 +1843,12 @@ func (t *Terminal) Loop() {
 		intChan := make(chan os.Signal, 1)
 		signal.Notify(intChan, os.Interrupt, syscall.SIGTERM)
 		go func() {
-			<-intChan
-			t.reqBox.Set(reqQuit, nil)
+			for s := range intChan {
+				// Don't quit by SIGINT while executing because it should be for the executing command and not for fzf itself
+				if !(s == os.Interrupt && t.executing.Get()) {
+					t.reqBox.Set(reqQuit, nil)
+				}
+			}
 		}()
 
 		contChan := make(chan os.Signal, 1)

test/test_go.rb

@@ -1911,6 +1911,17 @@ class TestGoFZF < TestBase
     tmux.send_keys :Down
     tmux.until { |lines| assert_equal 2, lines.select_count }
   end
+
+  def test_interrupt_execute
+    tmux.send_keys "seq 100 | #{FZF} --bind 'ctrl-l:execute:echo executing {}; sleep 100'", :Enter
+    tmux.until { |lines| assert_equal 100, lines.item_count }
+    tmux.send_keys 'C-l'
+    tmux.until { |lines| assert lines.any_include?('executing 1') }
+    tmux.send_keys 'C-c'
+    tmux.until { |lines| assert_equal 100, lines.item_count }
+    tmux.send_keys 99
+    tmux.until { |lines| assert_equal 1, lines.match_count }
+  end
 end
 
 module TestShell