From 7a1b37ac64f0fb0585e279a0a840707843511ed3 Mon Sep 17 00:00:00 2001
From: Bruce MacDonald <brucewmacdonald@gmail.com>
Date: Mon, 11 Dec 2023 10:48:14 -0500
Subject: [PATCH] os specific ctrl-z (#1420)

---
 readline/readline.go         |  9 +--------
 readline/readline_unix.go    | 18 ++++++++++++++++++
 readline/readline_windows.go |  6 ++++++
 3 files changed, 25 insertions(+), 8 deletions(-)
 create mode 100644 readline/readline_unix.go
 create mode 100644 readline/readline_windows.go

diff --git a/readline/readline.go b/readline/readline.go
index 781ac8a3..c4c73520 100644
--- a/readline/readline.go
+++ b/readline/readline.go
@@ -192,14 +192,7 @@ func (i *Instance) Readline() (string, error) {
 		case CharCtrlW:
 			buf.DeleteWord()
 		case CharCtrlZ:
-			if err := UnsetRawMode(fd, termios); err != nil {
-				return "", err
-			}
-
-			syscall.Kill(0, syscall.SIGSTOP)
-
-			// on resume...
-			return "", nil
+			return handleCharCtrlZ(fd, termios)
 		case CharEnter:
 			output := buf.String()
 			if output != "" {
diff --git a/readline/readline_unix.go b/readline/readline_unix.go
new file mode 100644
index 00000000..a1e34d27
--- /dev/null
+++ b/readline/readline_unix.go
@@ -0,0 +1,18 @@
+//go:build !windows
+
+package readline
+
+import (
+	"syscall"
+)
+
+func handleCharCtrlZ(fd int, termios *Termios) (string, error) {
+	if err := UnsetRawMode(fd, termios); err != nil {
+		return "", err
+	}
+
+	syscall.Kill(0, syscall.SIGSTOP)
+
+	// on resume...
+	return "", nil
+}
diff --git a/readline/readline_windows.go b/readline/readline_windows.go
new file mode 100644
index 00000000..c8178903
--- /dev/null
+++ b/readline/readline_windows.go
@@ -0,0 +1,6 @@
+package readline
+
+func handleCharCtrlZ(fd int, state *State) (string, error) {
+	// not supported
+	return "", nil
+}