* Version 4.1.2.
+ Don't fail for commands like this: cp a a d/
+
+ * src/copy.c (triple_hash_no_name): New function.
+ (src_info_init): New function.
+ (copy_internal): Warn and return early for the second and subsequent
+ occurrences of the same source file named on the command line.
+ * src/copy.h (struct cp_options) [src_info]: New member.
+ * src/install.c (cp_option_init): Initialize new member.
+ * src/mv.c (cp_option_init): Likewise.
+ * src/cp.c (cp_option_init): Likewise.
+ (do_copy): Call src_info_init.
+
* tests/mv/dup-source: New test for the above.
* tests/mv/Makefile.am (TESTS): Add dup-source.