maint: update copyright dates

70 files changed, 71 insertions, 70 deletions

diff --git a/ChangeLog-2007 b/ChangeLog-2007
index 582a79d..0ba1cc9 100644
--- a/ChangeLog-2007
+++ b/ChangeLog-2007
@@ -1776,7 +1776,7 @@ Sat Oct 31 12:46:00 1992  Jean-loup Gailly  (jloup@chorus.fr)
 
 	-----
 
-	Copyright (C) 1997-2002, 2006-2022 Free Software Foundation, Inc.
+	Copyright (C) 1997-2002, 2006-2023 Free Software Foundation, Inc.
 	Copyright (C) 1992, 1993 Jean-loup Gailly
 
 	Copying and distribution of this file, with or without
diff --git a/Makefile.am b/Makefile.am
index da2fda8..25b2042 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 # Make gzip (GNU zip).
 
-# Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2022 Free Software Foundation,
+# Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2023 Free Software Foundation,
 # Inc.
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/NEWS b/NEWS
index f2ea30e..20c75fa 100644
--- a/NEWS
+++ b/NEWS
@@ -587,7 +587,7 @@ Major changes form 0.5 to 0.6:
 
 ========================================================================
 
-Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2022 Free Software Foundation,
+Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2023 Free Software Foundation,
 Inc.
 Copyright (C) 1992, 1993 Jean-loup Gailly
 
diff --git a/README b/README
index 0f5562a..d8a714c 100644
--- a/README
+++ b/README
@@ -115,7 +115,7 @@ note that the range specifies every single year in that closed interval.
 
 ========================================================================
 
-Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2022 Free Software Foundation,
+Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2023 Free Software Foundation,
 Inc.
 Copyright (C) 1992, 1993 Jean-loup Gailly
 
diff --git a/README-hacking b/README-hacking
index 0744a26..8ed525f 100644
--- a/README-hacking
+++ b/README-hacking
@@ -109,7 +109,7 @@ each program.  One way to do this is to use vc-dwim
 
 -----
 
-Copyright (C) 2002-2022 Free Software Foundation, Inc.
+Copyright (C) 2002-2023 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/TODO b/TODO
index ac3bcd4..2bd8ecd 100644
--- a/TODO
+++ b/TODO
@@ -69,7 +69,7 @@ Send comments to <bug-gzip@gnu.org>.
 
 ========================================================================
 
-Copyright (C) 1999, 2001, 2006, 2009-2022 Free Software Foundation, Inc.
+Copyright (C) 1999, 2001, 2006, 2009-2023 Free Software Foundation, Inc.
 Copyright (C) 1992, 1993 Jean-loup Gailly
 
 Permission is granted to copy, distribute and/or modify this document
diff --git a/bits.c b/bits.c
index 23b65f9..e1bdd43 100644
--- a/bits.c
+++ b/bits.c
@@ -1,6 +1,6 @@
 /* bits.c -- output variable-length bit strings
 
-   Copyright (C) 1999, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2009-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
    This program is free software; you can redistribute it and/or modify
diff --git a/bootstrap b/bootstrap
index b1a4cc1..6d1d22c 100755
--- a/bootstrap
+++ b/bootstrap
@@ -5,7 +5,7 @@
 
 scriptversion=2022-12-27.07; # UTC
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 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/bootstrap.conf b/bootstrap.conf
index 324cb48..2dafa63 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -1,6 +1,6 @@
 # Bootstrap configuration.
 
-# Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2023 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/cfg.mk b/cfg.mk
index 3676661..7b27a2a 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -1,5 +1,5 @@
 # Customize maint.mk                           -*- makefile -*-
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 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/configure.ac b/configure.ac
index 402fc45..15aa162 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 # Configure template for gzip.
 
-# Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1999-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
 # Copyright (C) 1992-1993 Jean-loup Gailly
 
diff --git a/deflate.c b/deflate.c
index d95f454..a08a714 100644
--- a/deflate.c
+++ b/deflate.c
@@ -1,6 +1,6 @@
 /* deflate.c -- compress data using the deflation algorithm
 
-   Copyright (C) 1999, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2006, 2009-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
    This program is free software; you can redistribute it and/or modify
diff --git a/dfltcc.c b/dfltcc.c
index 50632d0..b9ff4e0 100644
--- a/dfltcc.c
+++ b/dfltcc.c
@@ -1,6 +1,6 @@
 /* dfltcc.c -- compress data using IBM Z DEFLATE COMPRESSION CALL
 
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 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/doc/Makefile.am b/doc/Makefile.am
index 299cbd2..608e120 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,6 +1,6 @@
 # Make gzip documentation.				-*-Makefile-*-
 
-# Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2023 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/doc/fdl.texi b/doc/fdl.texi
index eaf3da0..84f45b0 100644
--- a/doc/fdl.texi
+++ b/doc/fdl.texi
@@ -5,7 +5,8 @@
 @c hence no sectioning command or @node.
 
 @display
-Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
+Copyright @copyright{} 2000--2002, 2007--2008, 2023 Free Software Foundation,
+Inc.
 @uref{https://fsf.org/}
 
 Everyone is permitted to copy and distribute verbatim copies
diff --git a/doc/gzip.texi b/doc/gzip.texi
index b1e03c2..6a0b3e2 100644
--- a/doc/gzip.texi
+++ b/doc/gzip.texi
@@ -12,7 +12,7 @@ This manual is for GNU Gzip
 (version @value{VERSION}, @value{UPDATED}),
 and documents commands for compressing and decompressing data.
 
-Copyright @copyright{} 1998--1999, 2001--2002, 2006--2007, 2009--2022 Free
+Copyright @copyright{} 1998--1999, 2001--2002, 2006--2007, 2009--2023 Free
 Software Foundation, Inc.
 
 Copyright @copyright{} 1992, 1993 Jean-loup Gailly
diff --git a/gunzip.in b/gunzip.in
index a6262ba..e27d25c 100644
--- a/gunzip.in
+++ b/gunzip.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Uncompress files.  This is the inverse of gzip.
 
-# Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2010-2023 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/gzexe.in b/gzexe.in
index 6fb5cda..5432d38 100644
--- a/gzexe.in
+++ b/gzexe.in
@@ -13,7 +13,7 @@
 # On Ultrix, /bin/sh is too buggy, change the first line to: #!/bin/sh5
 
 
-# Copyright (C) 1998, 2002, 2004, 2006-2007, 2010-2022 Free Software
+# Copyright (C) 1998, 2002, 2004, 2006-2007, 2010-2023 Free Software
 # Foundation, Inc.
 # Copyright (C) 1993 Jean-loup Gailly
 
diff --git a/gzip.1 b/gzip.1
index 80a4bd3..22ab88d 100644
--- a/gzip.1
+++ b/gzip.1
@@ -517,7 +517,7 @@ GNU gzip home page: <https://www.gnu.org/software/gzip/>
 .br
 General help using GNU software: <https://www.gnu.org/gethelp/>
 .SH "COPYRIGHT NOTICE"
-Copyright \(co 1998-1999, 2001-2002, 2012, 2015-2022 Free Software Foundation,
+Copyright \(co 1998-1999, 2001-2002, 2012, 2015-2023 Free Software Foundation,
 Inc.
 .br
 Copyright \(co 1992, 1993 Jean-loup Gailly
diff --git a/gzip.c b/gzip.c
index d7a088b..b495641 100644
--- a/gzip.c
+++ b/gzip.c
@@ -1,6 +1,6 @@
 /* gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface
 
-   Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999, 2001-2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
diff --git a/gzip.h b/gzip.h
index b5eb020..fad2b3f 100644
--- a/gzip.h
+++ b/gzip.h
@@ -1,6 +1,6 @@
 /* gzip.h -- common declarations for all gzip modules
 
-   Copyright (C) 1997-1999, 2001, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1997-1999, 2001, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    Copyright (C) 1992-1993 Jean-loup Gailly.
diff --git a/inflate.c b/inflate.c
index 91fa3d8..fefa873 100644
--- a/inflate.c
+++ b/inflate.c
@@ -1,6 +1,6 @@
 /* Inflate deflated data
 
-   Copyright (C) 1997-1999, 2002, 2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1997-1999, 2002, 2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software; you can redistribute it and/or modify
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 7590c63..ba815c3 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -1,6 +1,6 @@
 # Make gzip/lib				-*-Makefile-*-
 
-# Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2023 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/lib/match.c b/lib/match.c
index 2ec115c..842b59d 100644
--- a/lib/match.c
+++ b/lib/match.c
@@ -1,6 +1,6 @@
 /* match.s -- optional optimized asm version of longest match in deflate.c
 
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
    This program is free software; you can redistribute it and/or modify
diff --git a/lzw.h b/lzw.h
index d1c92f5..5910a70 100644
--- a/lzw.h
+++ b/lzw.h
@@ -1,6 +1,6 @@
 /* lzw.h -- define the lzw functions.
 
-   Copyright (C) 1994-2022 Free Software Foundation, Inc.
+   Copyright (C) 1994-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly.
 
    This program is free software; you can redistribute it and/or modify
diff --git a/m4/shell.m4 b/m4/shell.m4
index 44f8c2f..2230346 100644
--- a/m4/shell.m4
+++ b/m4/shell.m4
@@ -1,6 +1,6 @@
 # Check for a working shell.
 
-# Copyright (C) 2000-2001, 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2007, 2009-2023 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
 # the Free Software Foundation; either version 3, or (at your option)
diff --git a/revision.h b/revision.h
index 0513826..11f4621 100644
--- a/revision.h
+++ b/revision.h
@@ -1,6 +1,6 @@
 /* revision.h -- define the version number
 
-   Copyright (C) 1998-1999, 2001-2002, 2006, 2009-2022 Free Software
+   Copyright (C) 1998-1999, 2001-2002, 2006, 2009-2023 Free Software
    Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly.
 
diff --git a/tailor.h b/tailor.h
index fa90b71..dcd142e 100644
--- a/tailor.h
+++ b/tailor.h
@@ -1,6 +1,6 @@
 /* tailor.h -- target dependent definitions
 
-   Copyright (C) 1997-1999, 2002, 2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1997-1999, 2002, 2006, 2009-2023 Free Software Foundation,
    Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
diff --git a/tests/Makefile.am b/tests/Makefile.am
index b116b03..077b25c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,5 +1,5 @@
 ## Process this file with automake to create Makefile.in
-# Copyright 2010-2022 Free Software Foundation, Inc.
+# Copyright 2010-2023 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/tests/gzip-env b/tests/gzip-env
index 397899d..507437c 100755
--- a/tests/gzip-env
+++ b/tests/gzip-env
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Test the obsolescent GZIP environment variable.
 
-# Copyright 2015-2022 Free Software Foundation, Inc.
+# Copyright 2015-2023 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/tests/helin-segv b/tests/helin-segv
index 3b44a20..5bf162f 100755
--- a/tests/helin-segv
+++ b/tests/helin-segv
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Before gzip-1.4, gzip -d would segfault on some inputs.
 
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 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/tests/help-version b/tests/help-version
index 300399f..00718d6 100755
--- a/tests/help-version
+++ b/tests/help-version
@@ -2,7 +2,7 @@
 # Make sure all of these programs work properly
 # when invoked with --help or --version.
 
-# Copyright (C) 2000-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2023 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/tests/hufts b/tests/hufts
index 26e7b91..cb560e1 100755
--- a/tests/hufts
+++ b/tests/hufts
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Exercise bugs whereby invalid input could make gzip -d misbehave.
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 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/tests/init.sh b/tests/init.sh
index d5d37c9..a502b4f 100644
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,6 +1,6 @@
 # source this file; set up for tests
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 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/tests/keep b/tests/keep
index 212d92b..01bd3be 100755
--- a/tests/keep
+++ b/tests/keep
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Exercise the --keep option.
 
-# Copyright (C) 2013-2022 Free Software Foundation, Inc.
+# Copyright (C) 2013-2023 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/tests/list b/tests/list
index 11c9f72..7a93bbc 100755
--- a/tests/list
+++ b/tests/list
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Exercise the --list option.
 
-# Copyright 2016-2022 Free Software Foundation, Inc.
+# Copyright 2016-2023 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/tests/list-big b/tests/list-big
index 10cb7c7..47d05b6 100755
--- a/tests/list-big
+++ b/tests/list-big
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Exercise the --list option with a big file.
 
-# Copyright 2021-2022 Free Software Foundation, Inc.
+# Copyright 2021-2023 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/tests/memcpy-abuse b/tests/memcpy-abuse
index 416590b..763950f 100755
--- a/tests/memcpy-abuse
+++ b/tests/memcpy-abuse
@@ -2,7 +2,7 @@
 # Before gzip-1.4, this the use of memcpy in inflate_codes could
 # mistakenly operate on overlapping regions.  Exercise that code.
 
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 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/tests/mixed b/tests/mixed
index c4f3923..ada42a0 100755
--- a/tests/mixed
+++ b/tests/mixed
@@ -2,7 +2,7 @@
 # Ensure that gzip -cdf handles mixed compressed/not-compressed data
 # Before gzip-1.5, it would produce invalid output.
 
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 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/tests/null-suffix-clobber b/tests/null-suffix-clobber
index 9284d9f..68a53b7 100755
--- a/tests/null-suffix-clobber
+++ b/tests/null-suffix-clobber
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Before gzip-1.5, gzip -d -S '' k.gz would delete F.gz and not create "F"
 
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 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/tests/reproducible b/tests/reproducible
index 47cab45..0fcf3a2 100755
--- a/tests/reproducible
+++ b/tests/reproducible
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Ensure that gzip has repoducible output.
 
-# Copyright 2018-2022 Free Software Foundation, Inc.
+# Copyright 2018-2023 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/tests/stdin b/tests/stdin
index 28b295d..3631154 100755
--- a/tests/stdin
+++ b/tests/stdin
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Ensure that gzip interprets "-" as stdin.
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 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/tests/timestamp b/tests/timestamp
index c49f684..35f3645 100755
--- a/tests/timestamp
+++ b/tests/timestamp
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Exercise timestamps.
 
-# Copyright 2016-2022 Free Software Foundation, Inc.
+# Copyright 2016-2023 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/tests/trailing-nul b/tests/trailing-nul
index 5c2e1cc..550b72f 100755
--- a/tests/trailing-nul
+++ b/tests/trailing-nul
@@ -2,7 +2,7 @@
 # gzip accepts trailing NUL bytes; don't fail if there is exactly one.
 # Before gzip-1.4, this would fail.
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 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/tests/two-files b/tests/two-files
index 0050150..856590e 100755
--- a/tests/two-files
+++ b/tests/two-files
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Ensure that gzip can compress more than one file.
 
-# Copyright 2020-2022 Free Software Foundation, Inc.
+# Copyright 2020-2023 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/tests/unpack-invalid b/tests/unpack-invalid
index f659aa8..af5c6be 100755
--- a/tests/unpack-invalid
+++ b/tests/unpack-invalid
@@ -2,7 +2,7 @@
 # gzip should report invalid 'unpack' input when uncompressing.
 # With gzip-1.5, it would output invalid data instead.
 
-# Copyright (C) 2012-2022 Free Software Foundation, Inc.
+# Copyright (C) 2012-2023 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/tests/unpack-valid b/tests/unpack-valid
index 321e87e..54c21bb 100755
--- a/tests/unpack-valid
+++ b/tests/unpack-valid
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Test end-of-block check in unpack code
 
-# Copyright 2017-2022 Free Software Foundation, Inc.
+# Copyright 2017-2023 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/tests/upper-suffix b/tests/upper-suffix
index 9b60399..1d02306 100755
--- a/tests/upper-suffix
+++ b/tests/upper-suffix
@@ -2,7 +2,7 @@
 # Ensure an upper-case user-specified suffix works as expected.
 # This test would have failed in gzip-1.18
 
-# Copyright 2017-2022 Free Software Foundation, Inc.
+# Copyright 2017-2023 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/tests/z-suffix b/tests/z-suffix
index 5938f12..6b0ed52 100755
--- a/tests/z-suffix
+++ b/tests/z-suffix
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Check that -Sz works.
 
-# Copyright 2014-2022 Free Software Foundation, Inc.
+# Copyright 2014-2023 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/tests/zdiff b/tests/zdiff
index 2424308..40422d1 100755
--- a/tests/zdiff
+++ b/tests/zdiff
@@ -2,7 +2,7 @@
 # Exercise zdiff with two compressed inputs.
 # Before gzip-1.4, this would fail.
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 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/tests/zgrep-abuse b/tests/zgrep-abuse
index 3e8a8f9..376175d 100755
--- a/tests/zgrep-abuse
+++ b/tests/zgrep-abuse
@@ -2,7 +2,7 @@
 # Show how zgrep applied to a crafted file name may overwrite
 # a selected file with chosen content.  Fixed in gzip-1.12.
 
-# Copyright (C) 2022 Free Software Foundation, Inc.
+# Copyright (C) 2022-2023 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/tests/zgrep-binary b/tests/zgrep-binary
index 6c00cef..25d1273 100755
--- a/tests/zgrep-binary
+++ b/tests/zgrep-binary
@@ -2,7 +2,7 @@
 # 'zgrep PATTERN FILE' would output "(standard input): binary file matches"
 # without mentioning FILE.  Fixed in gzip-1.12.
 
-# Copyright (C) 2022 Free Software Foundation, Inc.
+# Copyright (C) 2022-2023 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/tests/zgrep-context b/tests/zgrep-context
index a006929..b1adb04 100755
--- a/tests/zgrep-context
+++ b/tests/zgrep-context
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Ensure that zgrep -15 works.  Before gzip-1.5, it would fail.
 
-# Copyright (C) 2012-2022 Free Software Foundation, Inc.
+# Copyright (C) 2012-2023 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/tests/zgrep-f b/tests/zgrep-f
index 579cf70..89f9c36 100755
--- a/tests/zgrep-f
+++ b/tests/zgrep-f
@@ -2,7 +2,7 @@
 # Ensure that zgrep -f - works like grep -f -
 # Before gzip-1.4, it would fail.
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 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/tests/zgrep-signal b/tests/zgrep-signal
index cf7812b..a369bae 100755
--- a/tests/zgrep-signal
+++ b/tests/zgrep-signal
@@ -2,7 +2,7 @@
 # Check that zgrep is terminated gracefully by signal when
 # its grep/sed pipeline is terminated by a signal.
 
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 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/tests/znew-k b/tests/znew-k
index e2a5953..10d5463 100755
--- a/tests/znew-k
+++ b/tests/znew-k
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Check that znew -K works without compress(1).
 
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 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/trees.c b/trees.c
index 948c9aa..f85518b 100644
--- a/trees.c
+++ b/trees.c
@@ -1,6 +1,6 @@
 /* trees.c -- output deflated data using Huffman coding
 
-   Copyright (C) 1997-1999, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-1999, 2009-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
    This program is free software; you can redistribute it and/or modify
diff --git a/unpack.c b/unpack.c
index ba7d106..7962d7b 100644
--- a/unpack.c
+++ b/unpack.c
@@ -1,6 +1,6 @@
 /* unpack.c -- decompress files in pack format.
 
-   Copyright (C) 1997, 1999, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1999, 2006, 2009-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
    This program is free software; you can redistribute it and/or modify
diff --git a/unzip.c b/unzip.c
index 4cf0eb7..4927150 100644
--- a/unzip.c
+++ b/unzip.c
@@ -1,6 +1,6 @@
 /* unzip.c -- decompress files in gzip or pkzip format.
 
-   Copyright (C) 1997-1999, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-1999, 2009-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
    This program is free software; you can redistribute it and/or modify
diff --git a/util.c b/util.c
index 6f5e11f..642e620 100644
--- a/util.c
+++ b/util.c
@@ -1,6 +1,6 @@
 /* util.c -- utility functions for gzip support
 
-   Copyright (C) 1997-1999, 2001-2002, 2006, 2009-2022 Free Software
+   Copyright (C) 1997-1999, 2001-2002, 2006, 2009-2023 Free Software
    Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
diff --git a/zcat.in b/zcat.in
index 94b04ed..8c795f7 100644
--- a/zcat.in
+++ b/zcat.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Uncompress files to standard output.
 
-# Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2010-2023 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/zcmp.in b/zcmp.in
index 0ffb5e8..c7fb3f2 100644
--- a/zcmp.in
+++ b/zcmp.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Compare the uncompressed contents of compressed files, byte by byte.
 
-# Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2010-2023 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/zdiff.in b/zdiff.in
index e6c417b..aad3697 100644
--- a/zdiff.in
+++ b/zdiff.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
 
-# Copyright (C) 1998, 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1998, 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 # Copyright (C) 1993 Jean-loup Gailly
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/zforce.in b/zforce.in
index 9205c6f..3621ddb 100644
--- a/zforce.in
+++ b/zforce.in
@@ -6,7 +6,7 @@
 # 12345678901234 is renamed to 12345678901.gz
 
 
-# Copyright (C) 2002, 2007, 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2007, 2010-2023 Free Software Foundation, Inc.
 # Copyright (C) 1993 Jean-loup Gailly
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/zgrep.in b/zgrep.in
index 361fe0e..7b81786 100644
--- a/zgrep.in
+++ b/zgrep.in
@@ -3,7 +3,7 @@
 # zgrep -- a wrapper around a grep program that decompresses files as needed
 # Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>
 
-# Copyright (C) 1998, 2001-2002, 2006-2007, 2009-2022 Free Software Foundation,
+# Copyright (C) 1998, 2001-2002, 2006-2007, 2009-2023 Free Software Foundation,
 # Inc.
 
 # Copyright (C) 1993 Jean-loup Gailly
diff --git a/zip.c b/zip.c
index 4d61707..42ac886 100644
--- a/zip.c
+++ b/zip.c
@@ -1,6 +1,6 @@
 /* zip.c -- compress files to the gzip or pkzip format
 
-   Copyright (C) 1997-1999, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-1999, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Copyright (C) 1992-1993 Jean-loup Gailly
 
    This program is free software; you can redistribute it and/or modify
diff --git a/zless.1 b/zless.1
index 0d13e4d..42c5fb7 100644
--- a/zless.1
+++ b/zless.1
@@ -33,7 +33,7 @@ To read compressed data from a pipe, you can use
 instead of
 .RB ".\|.\|." "|zless" .
 .SH "COPYRIGHT NOTICE"
-Copyright \(co 2006-2007, 2015-2022 Free Software Foundation, Inc.
+Copyright \(co 2006-2007, 2015-2023 Free Software Foundation, Inc.
 .br
 Copyright \(co 1992, 1993 Jean-loup Gailly
 .PP
diff --git a/zless.in b/zless.in
index 4ca25a9..51fabb6 100644
--- a/zless.in
+++ b/zless.in
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 1998, 2002, 2006-2007, 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 1998, 2002, 2006-2007, 2010-2023 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/zmore.in b/zmore.in
index 59b0a77..7ee9bb0 100644
--- a/zmore.in
+++ b/zmore.in
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 2001-2002, 2007, 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001-2002, 2007, 2010-2023 Free Software Foundation, Inc.
 # Copyright (C) 1992, 1993 Jean-loup Gailly
 
 # This program is free software; you can redistribute it and/or modify
diff --git a/znew.in b/znew.in
index 23e53c9..6312b0f 100644
--- a/znew.in
+++ b/znew.in
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-# Copyright (C) 1998, 2002, 2004, 2007, 2010-2022 Free Software Foundation,
+# Copyright (C) 1998, 2002, 2004, 2007, 2010-2023 Free Software Foundation,
 # Inc.
 # Copyright (C) 1993 Jean-loup Gailly