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.

4 files changed, 5 insertions, 6 deletions

diff --git a/tests/misc/join b/tests/misc/join
index 772c2c4ad..4c36c32a5 100755
--- a/tests/misc/join
+++ b/tests/misc/join
@@ -166,7 +166,7 @@ my @tv = (
 # With check, both inputs out of order (in fact, in reverse order)
 ['chkodr-5', '--check-order',
  [" b 1\n a 2\n", " b Y\n a Z\n"], "", 1,
- "$prog: File 1 is not in sorted order\n"],
+ "$prog: file 1 is not in sorted order\n"],
 
 # Without order check, both inputs out of order and some lines
 # unpairable.  This is NOT supported by the GNU extension.  All that
diff --git a/tests/misc/split-a b/tests/misc/split-a
index b39009942..19f3f0aed 100755
--- a/tests/misc/split-a
+++ b/tests/misc/split-a
@@ -38,7 +38,7 @@ for f in $files; do
   printf 'creating file `%s'\''\n' $f
 done > exp || framework_failure
 
-echo split: Output file suffixes exhausted \
+echo split: output file suffixes exhausted \
   > exp-too-short || framework_failure
 
 fail=0
diff --git a/tests/misc/wc-files0-from b/tests/misc/wc-files0-from
index 505014301..c8ce7d6e5 100755
--- a/tests/misc/wc-files0-from
+++ b/tests/misc/wc-files0-from
@@ -31,8 +31,8 @@ my @Tests =
    # invalid extra command line argument
    ['f-extra-arg', '--files0-from=- no-such', {IN=>"a"}, {EXIT=>1},
     {ERR => "$prog: extra operand `no-such'\n"
-        . "File operands cannot be combined with --files0-from.\n"
-        . "Try `$prog --help' for more information.\n"}
+	. "file operands cannot be combined with --files0-from\n"
+	. "Try `$prog --help' for more information.\n"}
     ],
 
    # missing input file
diff --git a/tests/misc/xstrtol b/tests/misc/xstrtol
index 0ebd32bdc..08f9d1d86 100755
--- a/tests/misc/xstrtol
+++ b/tests/misc/xstrtol
@@ -38,9 +38,8 @@ my @Tests =
    ['simply-inval', "--pages=x", {EXIT => 1},
     {ERR=>"$prog: invalid --pages argument `x'\n"}],
 
-   # FIXME: should be lower case "invalid".
    ['inv-pg-range', "--pages=9x", {EXIT => 1},
-    {ERR=>"$prog: Invalid page range `9x'\n"}],
+    {ERR=>"$prog: invalid page range `9x'\n"}],
   );
 
 my $save_temps = $ENV{DEBUG};