From 1997d701133cea9e00882b420c138b1c4b57ad35 Mon Sep 17 00:00:00 2001
From: Changkun Ou <hi@changkun.de>
Date: Wed, 4 Jun 2025 00:16:42 +0200
Subject: [PATCH] Handle read error status codes on Linux

---
 clipboard_linux.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/clipboard_linux.go b/clipboard_linux.go
index 14ebe95..7bfa669 100644
--- a/clipboard_linux.go
+++ b/clipboard_linux.go
@@ -78,6 +78,12 @@ func readc(t string) ([]byte, error) {
 
 	var data *C.char
 	n := C.clipboard_read(ct, &data)
+	switch C.long(n) {
+	case -1:
+		return nil, errUnavailable
+	case -2:
+		return nil, errUnsupported
+	}
 	if data == nil {
 		return nil, errUnavailable
 	}