Defer escaping control char in error messages

* eval_error.c (print_errinfo): defer escaping control char in
  error messages until writing to stderr, instead of quoting at
  building the message.  [ruby-core:90853] [Bug #15497]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66753 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 8 deletions

diff --git a/ruby.c b/ruby.c
index 83707f8749..28afa4cfc0 100644
--- a/ruby.c
+++ b/ruby.c
@@ -1367,16 +1367,9 @@ proc_options(long argc, char **argv, ruby_cmdline_options_t *opt, int envopt)
 
 	  default:
 	    {
-		if (ISPRINT(*s)) {
-                    rb_raise(rb_eRuntimeError,
+                rb_raise(rb_eRuntimeError,
 			"invalid option -%c  (-h will show valid options)",
                         (int)(unsigned char)*s);
-		}
-		else {
-                    rb_raise(rb_eRuntimeError,
-			"invalid option -\\x%02X  (-h will show valid options)",
-                        (int)(unsigned char)*s);
-		}
 	    }
 	    goto switch_end;