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: Adjust to use the single most recent year.
* All other files: Update copyright years via the above make run.

14 files changed, 14 insertions, 14 deletions

diff --git a/tests/find/debug-missing-arg.sh b/tests/find/debug-missing-arg.sh
index 776f295d..657fd8e9 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) 2017-2021 Free Software Foundation, Inc.
+# Copyright (C) 2017-2022 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 55af438a..592d4e1c 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) 2020-2021 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022 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 e9001b64..135e022d 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) 2016-2021 Free Software Foundation, Inc.
+# Copyright (C) 2016-2022 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 2b680f5e..e26ee8fb 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) 2013-2021 Free Software Foundation, Inc.
+# Copyright (C) 2013-2022 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/files0-from.sh b/tests/find/files0-from.sh
index dfea8616..3a3df376 100755
--- a/tests/find/files0-from.sh
+++ b/tests/find/files0-from.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Exercise -files0-from option.
 
-# Copyright (C) 2021 Free Software Foundation, Inc.
+# Copyright (C) 2021-2022 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/inode-zero.sh b/tests/find/inode-zero.sh
index 7bfc2698..33f8f74b 100755
--- a/tests/find/inode-zero.sh
+++ b/tests/find/inode-zero.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Ensure find(1) treats inode number 0 correctly.
 
-# Copyright (C) 2021 Free Software Foundation, Inc.
+# Copyright (C) 2021-2022 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 d2edb253..6cb69d44 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) 2011-2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2022 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 b3a6be58..84e9a971 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) 2011-2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2022 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 530ac7b8..98ff6ebb 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) 2011-2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2022 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 55900e59..785bdac9 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) 2011-2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2022 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 40e918ff..b329d730 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) 2011-2021 Free Software Foundation, Inc.
+# Copyright (C) 2011-2022 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 a2a1a53f..24657ba0 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) 2016-2021 Free Software Foundation, Inc.
+# Copyright (C) 2016-2022 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 0165806d..e6c70576 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) 2016-2021 Free Software Foundation, Inc.
+# Copyright (C) 2016-2022 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 d061c2dc..10e7ee52 100755
--- a/tests/find/used.sh
+++ b/tests/find/used.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Verify that find -used works.
 
-# Copyright (C) 2020-2021 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022 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