From a7aa08ce07e2c21ac9ed8621e46cbe989228f3cd Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Sun, 7 Jun 2020 23:07:03 +0900
Subject: Add backward-eof event for --bind

---
 src/options.go  |  2 ++
 src/terminal.go | 10 ++++++++++
 src/tui/tui.go  |  1 +
 3 files changed, 13 insertions(+)

(limited to 'src')

diff --git a/src/options.go b/src/options.go
index 32c50af5..2979da6b 100644
--- a/src/options.go
+++ b/src/options.go
@@ -464,6 +464,8 @@ func parseKeyChords(str string, message string) map[int]string {
 			chord = tui.CtrlRightBracket
 		case "change":
 			chord = tui.Change
+		case "backward-eof":
+			chord = tui.BackwardEOF
 		case "alt-enter", "alt-return":
 			chord = tui.CtrlAltM
 		case "alt-space":
diff --git a/src/terminal.go b/src/terminal.go
index 7bc79398..a5dfe491 100644
--- a/src/terminal.go
+++ b/src/terminal.go
@@ -1738,6 +1738,7 @@ func (t *Terminal) Loop() {
 	for looping {
 		var newCommand *string
 		changed := false
+		beof := false
 		queryChanged := false
 
 		event := t.tui.GetChar()
@@ -1881,6 +1882,7 @@ func (t *Terminal) Loop() {
 					t.cx++
 				}
 			case actBackwardDeleteChar:
+				beof = len(t.input) == 0
 				if t.cx > 0 {
 					t.input = append(t.input[:t.cx-1], t.input[t.cx:]...)
 					t.cx--
@@ -1973,16 +1975,19 @@ func (t *Terminal) Loop() {
 				t.vset(0)
 				req(reqList)
 			case actUnixLineDiscard:
+				beof = len(t.input) == 0
 				if t.cx > 0 {
 					t.yanked = copySlice(t.input[:t.cx])
 					t.input = t.input[t.cx:]
 					t.cx = 0
 				}
 			case actUnixWordRubout:
+				beof = len(t.input) == 0
 				if t.cx > 0 {
 					t.rubout("\\s\\S")
 				}
 			case actBackwardKillWord:
+				beof = len(t.input) == 0
 				if t.cx > 0 {
 					t.rubout(t.wordRubout)
 				}
@@ -2145,6 +2150,11 @@ func (t *Terminal) Loop() {
 					continue
 				}
 			}
+			if onEOFs, prs := t.keymap[tui.BackwardEOF]; beof && prs {
+				if !doActions(onEOFs, tui.BackwardEOF) {
+					continue
+				}
+			}
 		} else {
 			if mapkey == tui.Rune {
 				if idx := strings.IndexRune(t.jumpLabels, event.Char); idx >= 0 && idx < t.maxItems() && idx < t.merger.Length() {
diff --git a/src/tui/tui.go b/src/tui/tui.go
index f5ebb161..3ed794f7 100644
--- a/src/tui/tui.go
+++ b/src/tui/tui.go
@@ -87,6 +87,7 @@ const (
 	F12
 
 	Change
+	BackwardEOF
 
 	AltSpace
 	AltSlash
-- 
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