From c9730b47893678b2283590c269ad33998a8a430a Mon Sep 17 00:00:00 2001 From: Noam Postavsky Date: Sat, 2 Jul 2016 20:26:35 -0400 Subject: [PATCH v1] Warn if --eval arg has text beyond 1 expression * lisp/startup.el (command-line-1): If --eval argument has more data than constitutes a single Lisp expression, print warning (Bug #23159). --- lisp/startup.el | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/lisp/startup.el b/lisp/startup.el index 761e69e..9f04a00 100644 --- a/lisp/startup.el +++ b/lisp/startup.el @@ -2360,7 +2360,15 @@ command-line-1 ((member argi '("-eval" "-execute")) (setq inhibit-startup-screen t) - (eval (read (or argval (pop command-line-args-left))))) + (let* ((str-expr (or argval (pop command-line-args-left))) + (read-data (read-from-string str-expr)) + (expr (car read-data)) + (end (cdr read-data))) + (eval expr) + (unless (= end (length str-expr)) + (lwarn '(command-line eval) :warning + "Garbage at the end of expression: %s" + (substring str-expr end))))) ((member argi '("-L" "-directory")) ;; -L :/foo adds /foo to the _end_ of load-path. -- 2.8.0