maint: update copyright year number ranges

Run 'make update-copyright'.

* lib/regexprops.c (copying): Update the year number manually.
The format of the copyright year number range in Texinfo files is
"YEAR1--YEAR2" now, i.e., with 2x '-'.
* tests/sample-test: Likewise, here to avoid starting a year number range.
* All other files: Update copyright years via the above make run.

18 files changed, 18 insertions, 18 deletions

diff --git a/tests/envvar-check b/tests/envvar-check
index 1a259939..7dc624db 100644
--- a/tests/envvar-check
+++ b/tests/envvar-check
@@ -1,7 +1,7 @@
 # -*- sh -*-
 # Check environment variables for sane values while testing.
 
-# Copyright (C) 2000-2020 Free Software Foundation, Inc.
+# Copyright (C) 2000-2021 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/find/debug-missing-arg.sh b/tests/find/debug-missing-arg.sh
index 2026f6d3..ce8dffaf 100755
--- a/tests/find/debug-missing-arg.sh
+++ b/tests/find/debug-missing-arg.sh
@@ -3,7 +3,7 @@
 # Between FINDUTILS_4_3_1-1 and 4.6, find crashed on some platforms.
 # See Savannah bug #52220.
 
-# Copyright (C) 2017-2020 Free Software Foundation, Inc.
+# Copyright (C) 2017-2021 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/find/depth-unreadable-dir.sh b/tests/find/depth-unreadable-dir.sh
index 86e2fd60..55af438a 100755
--- a/tests/find/depth-unreadable-dir.sh
+++ b/tests/find/depth-unreadable-dir.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # find -depth: ensure to output an unreadable directory.
 
-# Copyright (C) 2020 Free Software Foundation, Inc.
+# Copyright (C) 2020-2021 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/find/exec-plus-last-file.sh b/tests/find/exec-plus-last-file.sh
index 5864e02b..596f544b 100755
--- a/tests/find/exec-plus-last-file.sh
+++ b/tests/find/exec-plus-last-file.sh
@@ -5,7 +5,7 @@
 # if there was only one last single file argument.
 # See Savannah bug #48030.
 
-# Copyright (C) 2016-2020 Free Software Foundation, Inc.
+# Copyright (C) 2016-2021 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/find/execdir-fd-leak.sh b/tests/find/execdir-fd-leak.sh
index aceb8c6e..4fbf0a5c 100755
--- a/tests/find/execdir-fd-leak.sh
+++ b/tests/find/execdir-fd-leak.sh
@@ -3,7 +3,7 @@
 # directory specified by the -execdir option.
 # See Savannah bug #34976.
 
-# Copyright (C) 2013-2020 Free Software Foundation, Inc.
+# Copyright (C) 2013-2021 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/find/many-dir-entries-vs-OOM.sh b/tests/find/many-dir-entries-vs-OOM.sh
index a7f9fb78..8ab343f7 100755
--- a/tests/find/many-dir-entries-vs-OOM.sh
+++ b/tests/find/many-dir-entries-vs-OOM.sh
@@ -3,7 +3,7 @@
 # even for large directories.
 # See Savannah bug #34079.
 
-# Copyright (C) 2011-2020 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 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/find/name-lbracket-literal.sh b/tests/find/name-lbracket-literal.sh
index 50466f60..9f5583d2 100755
--- a/tests/find/name-lbracket-literal.sh
+++ b/tests/find/name-lbracket-literal.sh
@@ -2,7 +2,7 @@
 # Test that find -name treats the unquoted '[' argument literally.
 # See Savannah bug #32043.
 
-# Copyright (C) 2011-2020 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 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/find/printf_escape_c.sh b/tests/find/printf_escape_c.sh
index 06beef42..6a938a2d 100755
--- a/tests/find/printf_escape_c.sh
+++ b/tests/find/printf_escape_c.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Test -printf with the \c escape character.
 
-# Copyright (C) 2011-2020 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 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/find/printf_escapechars.sh b/tests/find/printf_escapechars.sh
index 311d889a..8d6dcebe 100755
--- a/tests/find/printf_escapechars.sh
+++ b/tests/find/printf_escapechars.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Test -printf with octal and letter escapes.
 
-# Copyright (C) 2011-2020 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 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/find/printf_inode.sh b/tests/find/printf_inode.sh
index 6444287c..79559821 100755
--- a/tests/find/printf_inode.sh
+++ b/tests/find/printf_inode.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Verify that ls -i and find -printf %i produce the same output.
 
-# Copyright (C) 2011-2020 Free Software Foundation, Inc.
+# Copyright (C) 2011-2021 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/find/refuse-noop.sh b/tests/find/refuse-noop.sh
index 4fa873b7..d896ee26 100755
--- a/tests/find/refuse-noop.sh
+++ b/tests/find/refuse-noop.sh
@@ -3,7 +3,7 @@
 # Between findutils-4.3.1 and 4.6, find dumped core ($? = 139).
 # See Savannah bug #48180.
 
-# Copyright (C) 2016-2020 Free Software Foundation, Inc.
+# Copyright (C) 2016-2021 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/find/type_list.sh b/tests/find/type_list.sh
index 223db977..06c5c8b4 100755
--- a/tests/find/type_list.sh
+++ b/tests/find/type_list.sh
@@ -2,7 +2,7 @@
 # Verify find's behavior regarding comma-separated file type arguments
 # to the -type/-xtype options.
 
-# Copyright (C) 2016-2020 Free Software Foundation, Inc.
+# Copyright (C) 2016-2021 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/find/used.sh b/tests/find/used.sh
index 48dbf04f..8e41a747 100755
--- a/tests/find/used.sh
+++ b/tests/find/used.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Verify that find -used works.
 
-# Copyright (C) 2020 Free Software Foundation, Inc.
+# Copyright (C) 2020-2021 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/local.mk b/tests/local.mk
index 13782d86..6e67bad4 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-.
 
-## Copyright (C) 2007-2020 Free Software Foundation, Inc.
+## Copyright (C) 2007-2021 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/misc/help-version.sh b/tests/misc/help-version.sh
index 59c9ed2b..b4b7c257 100755
--- a/tests/misc/help-version.sh
+++ b/tests/misc/help-version.sh
@@ -2,7 +2,7 @@
 # Make sure all of these programs work properly
 # when invoked with --help or --version.
 
-# Copyright (C) 2019-2020 Free Software Foundation, Inc.
+# Copyright (C) 2019-2021 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/other-fs-tmpdir b/tests/other-fs-tmpdir
index 940909e1..fbd60120 100644
--- a/tests/other-fs-tmpdir
+++ b/tests/other-fs-tmpdir
@@ -4,7 +4,7 @@
 # of the current directory.  If one is found, create a temporary directory
 # inside it.
 
-# Copyright (C) 1998-2020 Free Software Foundation, Inc.
+# Copyright (C) 1998-2021 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/sample-test b/tests/sample-test
index 825ae08b..9f47af8b 100644
--- a/tests/sample-test
+++ b/tests/sample-test
@@ -1,7 +1,7 @@
 #!/bin/sh
 # FIXME
 
-# Copyright (C) 2020 Free Software Foundation, Inc.
+# Copyright (C) 2021 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/xargs/verbose-quote.sh b/tests/xargs/verbose-quote.sh
index e408202b..09c30c4f 100755
--- a/tests/xargs/verbose-quote.sh
+++ b/tests/xargs/verbose-quote.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Verify that 'xargs -t' quotes the command properly when needed.
 
-# Copyright (C) 2019-2020 Free Software Foundation, Inc.
+# Copyright (C) 2019-2021 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