rewrite base OSC handler

terminal/csi.go

@@ -88,7 +88,7 @@ func csiSetMode(modeStr string, enabled bool, terminal *Terminal) error {
 		} else {
 			terminal.UseMainBuffer()
 		}
-	case "?1000", "?10061000": // ?10061000 seen from xterm
+	case "?1000", "?10061000": // ?10061000 seen from htop
 		// enable mouse tracking
 		if enabled {
 			terminal.SetMouseMode(MouseModeVT200)

terminal/osc.go

@@ -1,27 +1,46 @@
 package terminal
 
-import "fmt"
+import (
+	"fmt"
+	"strings"
+)
 
-func oscHandler(buffer chan rune, terminal *Terminal) error {
-	b := <-buffer
-	switch b {
-	case rune('0'):
-		b = <-buffer
-		if b == rune(';') {
-			title := []rune{}
-			for {
-				b = <-buffer
-				if b == 0x07 || b == 0x5c { // 0x07 -> BELL, 0x5c -> ST (\)
-					break
-				}
-				title = append(title, b)
-			}
-			terminal.SetTitle(string(title))
-		} else {
-			return fmt.Errorf("Invalid OSC 0 control sequence: 0x%02X", b)
+func oscHandler(pty chan rune, terminal *Terminal) error {
+
+	params := []string{}
+	param := ""
+
+	for {
+		b := <-pty
+		if b == 0x07 || b == 0x5c {
+			params = append(params, param)
+			break
 		}
+		if b == ';' {
+			params = append(params, param)
+			param = ""
+			continue
+		}
+		param = fmt.Sprintf("%s%c", param, b)
+	}
+
+	if len(params) == 0 {
+		return fmt.Errorf("OSC with no params")
+	}
+
+	pT := params[len(params)-1]
+	pS := params[:len(params)-1]
+
+	if len(pS) == 0 {
+		pS = []string{pT}
+		pT = ""
+	}
+
+	switch pS[0] {
+	case "0", "2":
+		terminal.SetTitle(pT)
 	default:
-		return fmt.Errorf("Unknown OSC control sequence: 0x%02X", b)
+		return fmt.Errorf("Unknown OSC control sequence: %s", strings.Join(params, ";"))
 	}
 	return nil
 }