feat: Add integration tests for variable assignments and fix RPN parser bugs

1 files changed, 13 insertions, 0 deletions

diff --git a/internal/repl/handlers.go b/internal/repl/handlers.go
index 663fd84..6647f3d 100644
--- a/internal/repl/handlers.go
+++ b/internal/repl/handlers.go
@@ -200,6 +200,19 @@ func (h *RPNHandler) Handle(repl *REPL, input string) (output string, handled bo
 				return result, true, nil
 			}
 		}
+		
+		// Check if input is a symbol syntax (:x) - valid RPN that pushes a symbol
+		if len(fields) == 1 {
+			token := fields[0]
+			if len(token) > 0 && token[0] == ':' {
+				// This is a symbol syntax like :x
+				result, err := state.rpnCalc.ParseAndEvaluate(token)
+				if err != nil {
+					return "", true, err
+				}
+				return result, true, nil
+			}
+		}
 	}
 
 	return h.Next(repl, input)