x: agent loop ux improvements (#13635)

readline/errors.go

@@ -6,6 +6,9 @@ import (
 
 var ErrInterrupt = errors.New("Interrupt")
 
+// ErrExpandOutput is returned when user presses Ctrl+O to expand tool output
+var ErrExpandOutput = errors.New("ExpandOutput")
+
 type InterruptError struct {
 	Line []rune
 }

readline/readline.go

@@ -206,6 +206,9 @@ func (i *Instance) Readline() (string, error) {
 			buf.DeleteBefore()
 		case CharCtrlL:
 			buf.ClearScreen()
+		case CharCtrlO:
+			// Ctrl+O - expand tool output
+			return "", ErrExpandOutput
 		case CharCtrlW:
 			buf.DeleteWord()
 		case CharCtrlZ:

readline/types.go

@@ -18,6 +18,7 @@ const (
 	CharCtrlL     = 12
 	CharEnter     = 13
 	CharNext      = 14
+	CharCtrlO     = 15 // Ctrl+O - used for expanding tool output
 	CharPrev      = 16
 	CharBckSearch = 18
 	CharFwdSearch = 19