copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205

19 files changed, 63 insertions, 52 deletions

diff --git a/scripts/Makefile.am b/scripts/Makefile.am
index ed9819b87..fcb78eabf 100644
--- a/scripts/Makefile.am
+++ b/scripts/Makefile.am
@@ -5,7 +5,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/checksrc.pl b/scripts/checksrc.pl
index 26634774e..2aab0ad8f 100755
--- a/scripts/checksrc.pl
+++ b/scripts/checksrc.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2011 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
@@ -53,47 +53,47 @@ my %warnings_extended = (
     );
 
 my %warnings = (
-    'LONGLINE'         => "Line longer than $max_column",
-    'TABS'             => 'TAB characters not allowed',
-    'TRAILINGSPACE'    => 'Trailing whitespace on the line',
-    'CPPCOMMENTS'      => '// comment detected',
-    'SPACEBEFOREPAREN' => 'space before an open parenthesis',
-    'SPACEAFTERPAREN'  => 'space after open parenthesis',
-    'SPACEBEFORECLOSE' => 'space before a close parenthesis',
-    'SPACEBEFORECOMMA' => 'space before a comma',
-    'RETURNNOSPACE'    => 'return without space',
-    'COMMANOSPACE'     => 'comma without following space',
-    'BRACEELSE'        => '} else on the same line',
-    'PARENBRACE'       => '){ without sufficient space',
-    'SPACESEMICOLON'   => 'space before semicolon',
+    'ASSIGNWITHINCONDITION' => 'assignment within conditional expression',
+    'ASTERISKNOSPACE'  => 'pointer declared without space before asterisk',
+    'ASTERISKSPACE'    => 'pointer declared with space after asterisk',
+    'BADCOMMAND'       => 'bad !checksrc! instruction',
     'BANNEDFUNC'       => 'a banned function was used',
-    'FOPENMODE'        => 'fopen needs a macro for the mode string',
+    'BRACEELSE'        => '} else on the same line',
     'BRACEPOS'         => 'wrong position for an open brace',
-    'INDENTATION'      => 'wrong start column for code',
+    'BRACEWHILE'       => 'A single space between open brace and while',
+    'COMMANOSPACE'     => 'comma without following space',
+    'COMMENTNOSPACEEND' => 'no space before */',
+    'COMMENTNOSPACESTART' => 'no space following /*',
     'COPYRIGHT'        => 'file missing a copyright statement',
-    'BADCOMMAND'       => 'bad !checksrc! instruction',
-    'UNUSEDIGNORE'     => 'a warning ignore was not used',
-    'OPENCOMMENT'      => 'file ended with a /* comment still "open"',
-    'ASTERISKSPACE'    => 'pointer declared with space after asterisk',
-    'ASTERISKNOSPACE'  => 'pointer declared without space before asterisk',
-    'ASSIGNWITHINCONDITION' => 'assignment within conditional expression',
+    'CPPCOMMENTS'      => '// comment detected',
+    'DOBRACE'          => 'A single space between do and open brace',
+    'EMPTYLINEBRACE'   => 'Empty line before the open brace',
     'EQUALSNOSPACE'    => 'equals sign without following space',
+    'EQUALSNULL'       => 'if/while comparison with == NULL',
+    'EXCLAMATIONSPACE' => 'Whitespace after exclamation mark in expression',
+    'FOPENMODE'        => 'fopen needs a macro for the mode string',
+    'INCLUDEDUP',      => 'same file is included again',
+    'INDENTATION'      => 'wrong start column for code',
+    'LONGLINE'         => "Line longer than $max_column",
+    'MULTISPACE'       => 'multiple spaces used when not suitable',
     'NOSPACEEQUALS'    => 'equals sign without preceding space',
+    'NOTEQUALSZERO',   => 'if/while comparison with != 0',
+    'ONELINECONDITION' => 'conditional block on the same line as the if()',
+    'OPENCOMMENT'      => 'file ended with a /* comment still "open"',
+    'PARENBRACE'       => '){ without sufficient space',
+    'RETURNNOSPACE'    => 'return without space',
     'SEMINOSPACE'      => 'semicolon without following space',
-    'MULTISPACE'       => 'multiple spaces used when not suitable',
     'SIZEOFNOPAREN'    => 'use of sizeof without parentheses',
     'SNPRINTF'         => 'use of snprintf',
-    'ONELINECONDITION' => 'conditional block on the same line as the if()',
+    'SPACEAFTERPAREN'  => 'space after open parenthesis',
+    'SPACEBEFORECLOSE' => 'space before a close parenthesis',
+    'SPACEBEFORECOMMA' => 'space before a comma',
+    'SPACEBEFOREPAREN' => 'space before an open parenthesis',
+    'SPACESEMICOLON'   => 'space before semicolon',
+    'TABS'             => 'TAB characters not allowed',
+    'TRAILINGSPACE'    => 'Trailing whitespace on the line',
     'TYPEDEFSTRUCT'    => 'typedefed struct',
-    'DOBRACE'          => 'A single space between do and open brace',
-    'BRACEWHILE'       => 'A single space between open brace and while',
-    'EXCLAMATIONSPACE' => 'Whitespace after exclamation mark in expression',
-    'EMPTYLINEBRACE'   => 'Empty line before the open brace',
-    'EQUALSNULL'       => 'if/while comparison with == NULL',
-    'NOTEQUALSZERO',   => 'if/while comparison with != 0',
-    'INCLUDEDUP',      => 'same file is included again',
-    'COMMENTNOSPACESTART' => 'no space following /*',
-    'COMMENTNOSPACEEND' => 'no space before */',
+    'UNUSEDIGNORE'     => 'a warning ignore was not used',
     );
 
 sub readskiplist {
@@ -400,7 +400,8 @@ sub scanfile {
         }
 
         # check for a copyright statement and save the years
-        if($l =~ /\* +copyright .* \d\d\d\d/i) {
+        if($l =~ /\* +copyright .* (\d\d\d\d|)/i) {
+            my $count = 0;
             while($l =~ /([\d]{4})/g) {
                 push @copyright, {
                   year => $1,
@@ -408,6 +409,16 @@ sub scanfile {
                   col => index($l, $1),
                   code => $l
                 };
+                $count++;
+            }
+            if(!$count) {
+                # year-less
+                push @copyright, {
+                    year => -1,
+                    line => $line,
+                    col => index($l, $1),
+                    code => $l
+                };
             }
         }
 
diff --git a/scripts/ciconfig.pl b/scripts/ciconfig.pl
index 9d4d0bbe2..a3ac4f6c9 100755
--- a/scripts/ciconfig.pl
+++ b/scripts/ciconfig.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/cijobs.pl b/scripts/cijobs.pl
index 428267519..ef0c0808c 100755
--- a/scripts/cijobs.pl
+++ b/scripts/cijobs.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/completion.pl b/scripts/completion.pl
index c2eb774f7..00c736898 100755
--- a/scripts/completion.pl
+++ b/scripts/completion.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/contributors.sh b/scripts/contributors.sh
index bb0745709..7b1cda385 100755
--- a/scripts/contributors.sh
+++ b/scripts/contributors.sh
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2013 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/contrithanks.sh b/scripts/contrithanks.sh
index 20b5cbf10..46853da9a 100755
--- a/scripts/contrithanks.sh
+++ b/scripts/contrithanks.sh
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2013 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/copyright.pl b/scripts/copyright.pl
index c7e7f242e..7c4ce659d 100755
--- a/scripts/copyright.pl
+++ b/scripts/copyright.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/coverage.sh b/scripts/coverage.sh
index f3db9af17..0a7c7824a 100755
--- a/scripts/coverage.sh
+++ b/scripts/coverage.sh
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/delta b/scripts/delta
index 858f16100..9d2fb9bb2 100755
--- a/scripts/delta
+++ b/scripts/delta
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2018-2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/firefox-db2pem.sh b/scripts/firefox-db2pem.sh
index 36c2de93c..f78f41523 100755
--- a/scripts/firefox-db2pem.sh
+++ b/scripts/firefox-db2pem.sh
@@ -6,7 +6,7 @@
 # *                            | (__| |_| |  _ <| |___
 # *                             \___|\___/|_| \_\_____|
 # *
-# * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 # *
 # * This software is licensed as described in the file COPYING, which
 # * you should have received as part of this distribution. The terms
diff --git a/scripts/installcheck.sh b/scripts/installcheck.sh
index f7df595f1..433420e03 100644
--- a/scripts/installcheck.sh
+++ b/scripts/installcheck.sh
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/log2changes.pl b/scripts/log2changes.pl
index ee8a753eb..355418368 100755
--- a/scripts/log2changes.pl
+++ b/scripts/log2changes.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/mk-ca-bundle.pl b/scripts/mk-ca-bundle.pl
index 926478f12..83027a489 100755
--- a/scripts/mk-ca-bundle.pl
+++ b/scripts/mk-ca-bundle.pl
@@ -6,7 +6,7 @@
 # *                            | (__| |_| |  _ <| |___
 # *                             \___|\___/|_| \_\_____|
 # *
-# * Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 # *
 # * This software is licensed as described in the file COPYING, which
 # * you should have received as part of this distribution. The terms
diff --git a/scripts/release-notes.pl b/scripts/release-notes.pl
index 42f9b7a4d..136b48f0a 100755
--- a/scripts/release-notes.pl
+++ b/scripts/release-notes.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2020 - 2023, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/singleuse.pl b/scripts/singleuse.pl
index 0b707f440..fdf485721 100755
--- a/scripts/singleuse.pl
+++ b/scripts/singleuse.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 2019 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/updatemanpages.pl b/scripts/updatemanpages.pl
index fd461e4bd..58a8755e8 100755
--- a/scripts/updatemanpages.pl
+++ b/scripts/updatemanpages.pl
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/zuul/before_script.sh b/scripts/zuul/before_script.sh
index f75846014..d1e4e438b 100755
--- a/scripts/zuul/before_script.sh
+++ b/scripts/zuul/before_script.sh
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
diff --git a/scripts/zuul/script.sh b/scripts/zuul/script.sh
index 38faf16d6..4514e97f2 100755
--- a/scripts/zuul/script.sh
+++ b/scripts/zuul/script.sh
@@ -6,7 +6,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms