Update copyright years.

21 files changed, 26 insertions, 24 deletions

diff --git a/Makefile.am b/Makefile.am
index 94e961fb..0e6bcc50 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,7 @@
 #
 # Makefile.am --- automake input file for gawk
 #
-# Copyright (C) 2000-2019 the Free Software Foundation, Inc.
+# Copyright (C) 2000-2020 the Free Software Foundation, Inc.
 #
 # This file is part of GAWK, the GNU implementation of the
 # AWK Programming Language.
diff --git a/Makefile.in b/Makefile.in
index 71932418..b8f7492d 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -17,7 +17,7 @@
 #
 # Makefile.am --- automake input file for gawk
 #
-# Copyright (C) 2000-2019 the Free Software Foundation, Inc.
+# Copyright (C) 2000-2020 the Free Software Foundation, Inc.
 #
 # This file is part of GAWK, the GNU implementation of the
 # AWK Programming Language.
diff --git a/README b/README
index 964e2a98..64152ae1 100644
--- a/README
+++ b/README
@@ -1,5 +1,5 @@
   Copyright (C) 2005, 2006, 2007, 2009, 2010, 2011, 2012, 2013, 2014, 2015,
-  2016, 2017, 2018, 2019 Free Software Foundation, Inc.
+  2016, 2017, 2018, 2019, 2020 Free Software Foundation, Inc.
   
   Copying and distribution of this file, with or without modification,
   are permitted in any medium without royalty provided the copyright
@@ -11,7 +11,7 @@ This is GNU Awk 5.1.0. It is upwardly compatible with Brian Kernighan's
 version of Unix awk.  It is almost completely compliant with the
 2018 POSIX 1003.1 standard for awk. (See the note below about POSIX.)
 
-This is a bug-fix release. See NEWS and ChangeLog for details.
+This is a major release. See NEWS and ChangeLog for details.
 
 Work to be done is described briefly in the TODO file, which is available
 only in the 'master' branch in the Git repo.
@@ -21,7 +21,7 @@ Changes in this version are summarized in the NEWS file.
 Read the file POSIX.STD for a discussion of issues where the standard
 says one thing but gawk does something different.
 
-To format the documentation with TeX, use at least version 2017-09.16
+To format the documentation with TeX, use at least version 2019-09-20.22
 of texinfo.tex. There is a usable copy of texinfo.tex in the doc directory.
 You must also use at least version 6.7 of texindex and of makeinfo
 from the texinfo-6.7 distribution.
diff --git a/awk.h b/awk.h
index f15fe7ef..85587feb 100644
--- a/awk.h
+++ b/awk.h
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 1986, 1988, 1989, 1991-2019 the Free Software Foundation, Inc.
+ * Copyright (C) 1986, 1988, 1989, 1991-2020 the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
  * AWK Programming Language.
diff --git a/awkgram.y b/awkgram.y
index c84529c4..00333ea0 100644
--- a/awkgram.y
+++ b/awkgram.y
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 1986, 1988, 1989, 1991-2019 the Free Software Foundation, Inc.
+ * Copyright (C) 1986, 1988, 1989, 1991-2020 the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
  * AWK Programming Language.
diff --git a/command.y b/command.y
index 393026d9..c02b84b1 100644
--- a/command.y
+++ b/command.y
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 2004, 2010, 2011, 2014, 2016, 2017, 2019
+ * Copyright (C) 2004, 2010, 2011, 2014, 2016, 2017, 2019, 2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/custom.h b/custom.h
index b21cf384..61d339d5 100644
--- a/custom.h
+++ b/custom.h
@@ -11,7 +11,7 @@
  */
 
 /*
- * Copyright (C) 1995-2004, 2008, 2009, 2011, 2016, 2018, 2019
+ * Copyright (C) 1995-2004, 2008, 2009, 2011, 2016, 2018, 2019, 2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/debug.c b/debug.c
index 25b866e3..e0822605 100644
--- a/debug.c
+++ b/debug.c
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 2004, 2010-2013, 2016-2019 the Free Software Foundation, Inc.
+ * Copyright (C) 2004, 2010-2013, 2016-2020 the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
  * AWK Programming Language.
diff --git a/ext.c b/ext.c
index 967492e2..5815c739 100644
--- a/ext.c
+++ b/ext.c
@@ -7,7 +7,7 @@
  */
 
 /*
- * Copyright (C) 1995 - 2001, 2003-2014, 2016-2019,
+ * Copyright (C) 1995 - 2001, 2003-2014, 2016-2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/extension/Makefile.am b/extension/Makefile.am
index 0f113dc8..12a25205 100644
--- a/extension/Makefile.am
+++ b/extension/Makefile.am
@@ -1,7 +1,8 @@
 #
 # extension/Makefile.am --- automake input file for gawk
 #
-# Copyright (C) 1995-2006, 2012-2015, 2017 the Free Software Foundation, Inc.
+# Copyright (C) 1995-2006, 2012-2015, 2017, 2020,
+# the Free Software Foundation, Inc.
 #
 # This file is part of GAWK, the GNU implementation of the
 # AWK Programming Language.
diff --git a/extension/Makefile.in b/extension/Makefile.in
index 9ef426a4..7f615e6f 100644
--- a/extension/Makefile.in
+++ b/extension/Makefile.in
@@ -17,7 +17,8 @@
 #
 # extension/Makefile.am --- automake input file for gawk
 #
-# Copyright (C) 1995-2006, 2012-2015, 2017 the Free Software Foundation, Inc.
+# Copyright (C) 1995-2006, 2012-2015, 2017, 2020,
+# the Free Software Foundation, Inc.
 #
 # This file is part of GAWK, the GNU implementation of the
 # AWK Programming Language.
diff --git a/extension/configure.ac b/extension/configure.ac
index a4cc7807..50612b65 100644
--- a/extension/configure.ac
+++ b/extension/configure.ac
@@ -1,7 +1,7 @@
 dnl
 dnl configure.ac --- autoconf input file for gawk
 dnl
-dnl Copyright (C) 2012-2019 the Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2020 the Free Software Foundation, Inc.
 dnl
 dnl This file is part of GAWK, the GNU implementation of the
 dnl AWK Programming Language.
diff --git a/extension/filefuncs.c b/extension/filefuncs.c
index 9078c107..86e60321 100644
--- a/extension/filefuncs.c
+++ b/extension/filefuncs.c
@@ -10,7 +10,7 @@
  */
 
 /*
- * Copyright (C) 2001, 2004, 2005, 2010-2019
+ * Copyright (C) 2001, 2004, 2005, 2010-2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/extension/ordchr.c b/extension/ordchr.c
index 28d3e036..e1afade5 100644
--- a/extension/ordchr.c
+++ b/extension/ordchr.c
@@ -9,7 +9,7 @@
  */
 
 /*
- * Copyright (C) 2001, 2004, 2011, 2012, 2013, 2018
+ * Copyright (C) 2001, 2004, 2011, 2012, 2013, 2018, 2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/extension/rwarray.c b/extension/rwarray.c
index 777eb41c..45f9c734 100644
--- a/extension/rwarray.c
+++ b/extension/rwarray.c
@@ -8,7 +8,7 @@
  */
 
 /*
- * Copyright (C) 2009-2014, 2017, 2018 the Free Software Foundation, Inc.
+ * Copyright (C) 2009-2014, 2017, 2018, 2020 the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
  * AWK Programming Language.
diff --git a/extension/rwarray0.c b/extension/rwarray0.c
index d343cdd2..5298bea3 100644
--- a/extension/rwarray0.c
+++ b/extension/rwarray0.c
@@ -7,7 +7,7 @@
  */
 
 /*
- * Copyright (C) 2009, 2010, 2011, 2012, 2013, 2018
+ * Copyright (C) 2009, 2010, 2011, 2012, 2013, 2018, 2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/field.c b/field.c
index 9eee2948..efbc7092 100644
--- a/field.c
+++ b/field.c
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 1986, 1988, 1989, 1991-2019 the Free Software Foundation, Inc.
+ * Copyright (C) 1986, 1988, 1989, 1991-2020 the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
  * AWK Programming Language.
diff --git a/gettext.h b/gettext.h
index aed21b85..aa006b40 100644
--- a/gettext.h
+++ b/gettext.h
@@ -1,6 +1,6 @@
 /* Convenience header for conditional use of GNU <libintl.h>.
-   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2018 Free Software
-   Foundation, Inc.
+   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2018, 2020,
+   Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/int_array.c b/int_array.c
index 31bc80bf..382aa799 100644
--- a/int_array.c
+++ b/int_array.c
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 1986, 1988, 1989, 1991-2013, 2016, 2017, 2019,
+ * Copyright (C) 1986, 1988, 1989, 1991-2013, 2016, 2017, 2019, 2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/io.c b/io.c
index 3f510943..f954d6e3 100644
--- a/io.c
+++ b/io.c
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 1986, 1988, 1989, 1991-2019,
+ * Copyright (C) 1986, 1988, 1989, 1991-2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the
diff --git a/symbol.c b/symbol.c
index 5cbc4d35..29052366 100644
--- a/symbol.c
+++ b/symbol.c
@@ -3,7 +3,7 @@
  */
 
 /*
- * Copyright (C) 1986, 1988, 1989, 1991-2015, 2017, 2018, 2019,
+ * Copyright (C) 1986, 1988, 1989, 1991-2015, 2017-2020,
  * the Free Software Foundation, Inc.
  *
  * This file is part of GAWK, the GNU implementation of the