standardize some error messages

* maint.mk: (sc_error_message_warn_fatal, sc_error_message_uppercase):
(sc_error_message_period): Add automatic checks for non-standard error
messages.
* .x-sc_error_message_uppercase: explicit exclusion for this check
* src/cp.c: Standardize some error messages.
* src/date.c: Likewise.
* src/dircolors.c: Likewise.
* src/du.c: Likewise.
* src/expr.c: Likewise.
* src/install.c: Likewise.
* src/join.c: Likewise.
* src/ln.c: Likewise.
* src/mv.c: Likewise.
* src/od.c: Likewise.
* src/pr.c: Likewise.
* src/split.c: Likewise.
* src/truncate.c: Likewise.
* src/wc.c: Likewise.
* tests/du/files0-from: Expect new error message.
* tests/misc/join: Likewise.
* tests/misc/split-a: Likewise.
* tests/misc/wc-files0-from: Likewise.
* tests/misc/xstrtol: Likewise.
* lib/xmemxfrm.c: Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cp.c b/src/cp.c
index 01b9c18d3..c768d1bc9 100644
--- a/src/cp.c
+++ b/src/cp.c
@@ -592,7 +592,7 @@ do_copy (int n_files, char **file, const char *target_directory,
     {
       if (target_directory)
 	error (EXIT_FAILURE, 0,
-	       _("Cannot combine --target-directory (-t) "
+	       _("cannot combine --target-directory (-t) "
 		 "and --no-target-directory (-T)"));
       if (2 < n_files)
 	{