2 files changed, 4 insertions, 5 deletions
diff --git a/colorize.c b/colorize.c
index 1e27fca..8c0afcb 100644
--- a/colorize.c
+++ b/colorize.c
@@ -469,11 +469,10 @@ process_opt_attr (const char *p)
               }
             if (!valid_attr)
               {
-                char *sep;
-                char *attr_invalid = xstrdup (s);
+                char *attr_invalid = xmalloc ((p - s) + 1);
                 STACK_VAR (attr_invalid);
-                if ((sep = strchr (attr_invalid, ',')))
-                  *sep = '\0';
+                strncpy (attr_invalid, s, p - s);
+                attr_invalid[p - s] = '\0';
                 vfprintf_fail ("--attr switch attribute '%s' is not valid", attr_invalid);
               }
           }
diff --git a/t/fail.t b/t/fail.t
index e2d71be..10378c4 100755
--- a/t/fail.t
+++ b/t/fail.t
@@ -43,7 +43,7 @@ SKIP: {
         [ '--attr=:',                'must be provided a string'                   ],
         [ '--attr=bold:underscore',  'must have strings separated by ,'            ],
         [ '--attr=b0ld',             'attribute \'b0ld\' is not valid'             ],
-        [ '--attr=b0ld,underscore',  'attribute \'b0ld\' is not valid'             ], # NULify comma
+        [ '--attr=b0ld,underscore',  'attribute \'b0ld\' is not valid'             ], # handle comma
         [ '--attr=bold,bold',        'has attribute \'bold\' twice or more'        ],
         [ '--exclude-random=random', 'must be provided a plain color'              ],
         [ '--clean --clean-all',     'mutually exclusive'                          ],