31 files changed, 46 insertions, 46 deletions
diff --git a/unix/configure b/unix/configure
index 473ac13..e2f45b1 100755
--- a/unix/configure
+++ b/unix/configure
@@ -5027,12 +5027,12 @@ fi
     if test "$GCC" = yes; then :
 
 	CFLAGS_OPTIMIZE=-O2
-	CFLAGS_WARNING="-Wall -Wextra -Wshadow -Wundef -Wwrite-strings -Wpointer-arith"
+	CFLAGS_WARNING="-Wall -Wextra -Wshadow -Wundef -Wwrite-strings -Wpointer-arith -finput-charset=UTF-8"
 	case "${CC}" in
 	    *++|*++-*)
 		;;
 	    *)
-		CFLAGS_WARNING="${CFLAGS_WARNING} -Wc++-compat -Wdeclaration-after-statement"
+		CFLAGS_WARNING="${CFLAGS_WARNING} -Wc++-compat -fextended-identifiers -Wdeclaration-after-statement"
 		;;
 	esac
 
diff --git a/unix/dltest/pkga.c b/unix/dltest/pkga.c
index c2d814f..e00f996 100644
--- a/unix/dltest/pkga.c
+++ b/unix/dltest/pkga.c
@@ -4,7 +4,7 @@
  *	This file contains a simple Tcl package "pkga" that is intended for
  *	testing the Tcl dynamic loading facilities.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/dltest/pkgb.c b/unix/dltest/pkgb.c
index 741b2a1..3210669 100644
--- a/unix/dltest/pkgb.c
+++ b/unix/dltest/pkgb.c
@@ -5,7 +5,7 @@
  *	testing the Tcl dynamic loading facilities. It can be used in both
  *	safe and unsafe interpreters.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/dltest/pkgc.c b/unix/dltest/pkgc.c
index 46f6e86..2b46986 100644
--- a/unix/dltest/pkgc.c
+++ b/unix/dltest/pkgc.c
@@ -5,7 +5,7 @@
  *	testing the Tcl dynamic loading facilities. It can be used in both
  *	safe and unsafe interpreters.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/dltest/pkgd.c b/unix/dltest/pkgd.c
index d3af83f..5c799f5 100644
--- a/unix/dltest/pkgd.c
+++ b/unix/dltest/pkgd.c
@@ -5,7 +5,7 @@
  *	testing the Tcl dynamic loading facilities. It can be used in both
  *	safe and unsafe interpreters.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/dltest/pkge.c b/unix/dltest/pkge.c
index f46ca74..26a4b79 100644
--- a/unix/dltest/pkge.c
+++ b/unix/dltest/pkge.c
@@ -5,7 +5,7 @@
  *	testing the Tcl dynamic loading facilities. Its Init procedure returns
  *	an error in order to test how this is handled.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/dltest/pkgooa.c b/unix/dltest/pkgooa.c
index 7d0c98b..ff1cf1f 100644
--- a/unix/dltest/pkgooa.c
+++ b/unix/dltest/pkgooa.c
@@ -4,7 +4,7 @@
  *	This file contains a simple Tcl package "pkgooa" that is intended for
  *	testing the Tcl dynamic loading facilities.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/dltest/pkgua.c b/unix/dltest/pkgua.c
index c5102a8..0ab3e23 100644
--- a/unix/dltest/pkgua.c
+++ b/unix/dltest/pkgua.c
@@ -4,8 +4,8 @@
  *	This file contains a simple Tcl package "pkgua" that is intended for
  *	testing the Tcl dynamic unloading facilities.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
- * Copyright (c) 2004 Georgios Petasis
+ * Copyright © 1995 Sun Microsystems, Inc.
+ * Copyright © 2004 Georgios Petasis
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tcl.m4 b/unix/tcl.m4
index c9d9e3a..01ccead 100644
--- a/unix/tcl.m4
+++ b/unix/tcl.m4
@@ -958,12 +958,12 @@ AC_DEFUN([SC_CONFIG_CFLAGS], [
     CFLAGS_DEBUG=-g
     AS_IF([test "$GCC" = yes], [
 	CFLAGS_OPTIMIZE=-O2
-	CFLAGS_WARNING="-Wall -Wextra -Wshadow -Wundef -Wwrite-strings -Wpointer-arith"
+	CFLAGS_WARNING="-Wall -Wextra -Wshadow -Wundef -Wwrite-strings -Wpointer-arith -finput-charset=UTF-8"
 	case "${CC}" in
 	    *++|*++-*)
 		;;
 	    *)
-		CFLAGS_WARNING="${CFLAGS_WARNING} -Wc++-compat -Wdeclaration-after-statement"
+		CFLAGS_WARNING="${CFLAGS_WARNING} -Wc++-compat -fextended-identifiers -Wdeclaration-after-statement"
 		;;
 	esac
 
diff --git a/unix/tclEpollNotfy.c b/unix/tclEpollNotfy.c
index 406b7ca..3a99e6d 100644
--- a/unix/tclEpollNotfy.c
+++ b/unix/tclEpollNotfy.c
@@ -5,8 +5,8 @@
  *	Linux-specific notifier, which is the lowest-level part of the Tcl
  *	event loop. This file works together with generic/tclNotify.c.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- * Copyright (c) 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclKqueueNotfy.c b/unix/tclKqueueNotfy.c
index 4daab7c..2f1d8e6 100644
--- a/unix/tclKqueueNotfy.c
+++ b/unix/tclKqueueNotfy.c
@@ -6,8 +6,8 @@
  *	level part of the Tcl event loop. This file works together with
  *	generic/tclNotify.c.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- * Copyright (c) 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclLoadAix.c b/unix/tclLoadAix.c
index fea9494..17fca04 100644
--- a/unix/tclLoadAix.c
+++ b/unix/tclLoadAix.c
@@ -9,7 +9,7 @@
  *	different from the notice used elsewhere in Tcl. The file has been
  *	modified to incorporate the file dlfcn.h in-line.
  *
- *	Copyright (c) 1992,1993,1995,1996, Jens-Uwe Mager, Helios Software GmbH
+ *	Copyright © 1992,1993,1995,1996, Jens-Uwe Mager, Helios Software GmbH
  *	Not derived from licensed software.
  *
  *	Permission is granted to freely use, copy, modify, and redistribute
@@ -23,7 +23,7 @@
 
 /*
  * @(#)dlfcn.c	1.7 revision of 95/08/14  19:08:38
- * This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
+ * This is an unpublished work copyright © 1992 HELIOS Software GmbH
  * 30159 Hannover, Germany
  */
 
diff --git a/unix/tclLoadDl.c b/unix/tclLoadDl.c
index 2a09037..342dff6 100644
--- a/unix/tclLoadDl.c
+++ b/unix/tclLoadDl.c
@@ -4,7 +4,7 @@
  *	This procedure provides a version of the TclLoadFile that works with
  *	the "dlopen" and "dlsym" library procedures for dynamic loading.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclLoadDyld.c b/unix/tclLoadDyld.c
index de738e9..017793d 100644
--- a/unix/tclLoadDyld.c
+++ b/unix/tclLoadDyld.c
@@ -6,8 +6,8 @@
  *	Original version of his file (superseded long ago) provided by
  *	Wilfredo Sanchez (wsanchez@apple.com).
  *
- * Copyright (c) 1995 Apple Computer, Inc.
- * Copyright (c) 2001-2007 Daniel A. Steffen <das@users.sourceforge.net>
+ * Copyright © 1995 Apple Computer, Inc.
+ * Copyright © 2001-2007 Daniel A. Steffen <das@users.sourceforge.net>
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclLoadNext.c b/unix/tclLoadNext.c
index 3f59998..ee39326 100644
--- a/unix/tclLoadNext.c
+++ b/unix/tclLoadNext.c
@@ -4,7 +4,7 @@
  *	This procedure provides a version of the TclLoadFile that works with
  *	NeXTs rld_* dynamic loading. This file provided by Pedja Bogdanovich.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclLoadOSF.c b/unix/tclLoadOSF.c
index b8423dd..7fd0cf3 100644
--- a/unix/tclLoadOSF.c
+++ b/unix/tclLoadOSF.c
@@ -26,7 +26,7 @@
  *
  *	John Robert LoVerso <loverso@freebsd.osf.org>
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclLoadShl.c b/unix/tclLoadShl.c
index 876896a..11eaa83 100644
--- a/unix/tclLoadShl.c
+++ b/unix/tclLoadShl.c
@@ -5,7 +5,7 @@
  *	the "shl_load" and "shl_findsym" library procedures for dynamic
  *	loading (e.g. for HP machines).
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclSelectNotfy.c b/unix/tclSelectNotfy.c
index 5f30857..1d16114 100644
--- a/unix/tclSelectNotfy.c
+++ b/unix/tclSelectNotfy.c
@@ -5,7 +5,7 @@
  *	Unix notifier, which is the lowest-level part of the Tcl event loop.
  *	This file works together with generic/tclNotify.c.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c
index 9273b8e..71ff61d 100644
--- a/unix/tclUnixChan.c
+++ b/unix/tclUnixChan.c
@@ -4,8 +4,8 @@
  *	Common channel driver for Unix channels based on files, command pipes
  *	and TCP sockets.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- * Copyright (c) 1998-1999 by Scriptics Corporation.
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 1998-1999 Scriptics Corporation.
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixEvent.c b/unix/tclUnixEvent.c
index 40aac6f..aff7797 100644
--- a/unix/tclUnixEvent.c
+++ b/unix/tclUnixEvent.c
@@ -3,7 +3,7 @@
  *
  *	This file implements Unix specific event related routines.
  *
- * Copyright (c) 1997 by Sun Microsystems, Inc.
+ * Copyright © 1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixFCmd.c b/unix/tclUnixFCmd.c
index eee47d7..4d08c1d 100644
--- a/unix/tclUnixFCmd.c
+++ b/unix/tclUnixFCmd.c
@@ -5,7 +5,7 @@
  *	subcommands of the "file" command. All filename arguments should
  *	already be translated to native format.
  *
- * Copyright (c) 1996-1998 Sun Microsystems, Inc.
+ * Copyright © 1996-1998 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
@@ -13,7 +13,7 @@
  * Portions of this code were derived from NetBSD source code which has the
  * following copyright notice:
  *
- * Copyright (c) 1988, 1993, 1994
+ * Copyright © 1988, 1993, 1994
  *      The Regents of the University of California. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/unix/tclUnixFile.c b/unix/tclUnixFile.c
index fdf7904..203a118 100644
--- a/unix/tclUnixFile.c
+++ b/unix/tclUnixFile.c
@@ -4,7 +4,7 @@
  *	This file contains wrappers around UNIX file handling functions.
  *	These wrappers mask differences between Windows and UNIX.
  *
- * Copyright (c) 1995-1998 Sun Microsystems, Inc.
+ * Copyright © 1995-1998 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixInit.c b/unix/tclUnixInit.c
index 12cbd2c..704224f 100644
--- a/unix/tclUnixInit.c
+++ b/unix/tclUnixInit.c
@@ -3,8 +3,8 @@
  *
  *	Contains the Unix-specific interpreter initialization functions.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- * Copyright (c) 1999 by Scriptics Corporation.
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 1999 Scriptics Corporation.
  * All rights reserved.
  */
 
diff --git a/unix/tclUnixNotfy.c b/unix/tclUnixNotfy.c
index 6b1ec3d..d992d65 100644
--- a/unix/tclUnixNotfy.c
+++ b/unix/tclUnixNotfy.c
@@ -4,8 +4,8 @@
  *	This file contains subroutines shared by all notifier backend
  *	implementations on *nix platforms.
  *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- * Copyright (c) 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>
+ * Copyright © 1995-1997 Sun Microsystems, Inc.
+ * Copyright © 2016 Lucio Andrés Illanes Albornoz <l.illanes@gmx.de>
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixPipe.c b/unix/tclUnixPipe.c
index 5d02486..e7199bc 100644
--- a/unix/tclUnixPipe.c
+++ b/unix/tclUnixPipe.c
@@ -4,8 +4,8 @@
  *	This file implements the UNIX-specific exec pipeline functions, the
  *	"pipe" channel driver, and the "pid" Tcl command.
  *
- * Copyright (c) 1991-1994 The Regents of the University of California.
- * Copyright (c) 1994-1997 Sun Microsystems, Inc.
+ * Copyright © 1991-1994 The Regents of the University of California.
+ * Copyright © 1994-1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixSock.c b/unix/tclUnixSock.c
index 8c9386c..076678c 100644
--- a/unix/tclUnixSock.c
+++ b/unix/tclUnixSock.c
@@ -3,7 +3,7 @@
  *
  *	This file contains Unix-specific socket related code.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixTest.c b/unix/tclUnixTest.c
index b06abdf0..80e8081 100644
--- a/unix/tclUnixTest.c
+++ b/unix/tclUnixTest.c
@@ -3,8 +3,8 @@
  *
  *	Contains platform specific test commands for the Unix platform.
  *
- * Copyright (c) 1996-1997 Sun Microsystems, Inc.
- * Copyright (c) 1998 by Scriptics Corporation.
+ * Copyright © 1996-1997 Sun Microsystems, Inc.
+ * Copyright © 1998 Scriptics Corporation.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixThrd.c b/unix/tclUnixThrd.c
index 92399f4..8a16d0b 100644
--- a/unix/tclUnixThrd.c
+++ b/unix/tclUnixThrd.c
@@ -3,9 +3,9 @@
  *
  *	This file implements the UNIX-specific thread support.
  *
- * Copyright (c) 1991-1994 The Regents of the University of California.
- * Copyright (c) 1994-1997 Sun Microsystems, Inc.
- * Copyright (c) 2008 by George Peter Staplin
+ * Copyright © 1991-1994 The Regents of the University of California.
+ * Copyright © 1994-1997 Sun Microsystems, Inc.
+ * Copyright © 2008 George Peter Staplin
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclUnixTime.c b/unix/tclUnixTime.c
index 07b3065..ead7b0c 100644
--- a/unix/tclUnixTime.c
+++ b/unix/tclUnixTime.c
@@ -4,7 +4,7 @@
  *	Contains Unix specific versions of Tcl functions that obtain time
  *	values from the operating system.
  *
- * Copyright (c) 1995 Sun Microsystems, Inc.
+ * Copyright © 1995 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclXtNotify.c b/unix/tclXtNotify.c
index cf99fb2..68ee578 100644
--- a/unix/tclXtNotify.c
+++ b/unix/tclXtNotify.c
@@ -4,7 +4,7 @@
  *	This file contains the notifier driver implementation for the Xt
  *	intrinsics.
  *
- * Copyright (c) 1997 by Sun Microsystems, Inc.
+ * Copyright © 1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
diff --git a/unix/tclXtTest.c b/unix/tclXtTest.c
index 6c09a50..afac493 100644
--- a/unix/tclXtTest.c
+++ b/unix/tclXtTest.c
@@ -3,7 +3,7 @@
  *
  *	Contains commands for Xt notifier specific tests on Unix.
  *
- * Copyright (c) 1997 by Sun Microsystems, Inc.
+ * Copyright © 1997 Sun Microsystems, Inc.
  *
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.