chore: update copyright headers to 2022

The script used to identify and update the change is added into the GitHub
workflows script directory. A workflow action can be created to trigger the
script to update the headers on the first of every new year. Possibly a task for
a consequent PR.

.github/workflows/scripts/copyright_header

@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+## Update the copyright headers with the current year
+##
+## Copyright (C) 2022 Sylvain Benner & Contributors
+##
+## Author: Arif Er
+## URL: https://github.com/syl20bnr/spacemacs
+##
+## This file is not part of GNU Emacs.
+##
+## License: GPLv3
+
+## Search for files recursively in BASEDIR for copyright headers. Skip all the
+## files with the current year already in the copyright header. Otherwise,
+## replace the most recent copyright header entry with the current year. If
+## there are files with only a single year in the copyright header, extend the
+## header to the current year.
+
+SCRIPTPATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+BASEDIR=$(dirname $(dirname $(dirname $SCRIPTPATH)))  # Path to .emacs.d/
+BLACKLIST=(
+    "core/libs/*"
+    ".cache/*"
+    ".git/*"
+    "assets/*"
+    "*cache*/*"
+    ".*"
+    "persist/*"
+    "private/*"
+    "elpa/*"
+)
+ASSETS=(
+    "*.jpg"
+    "*.png"
+    "*.json"
+    "*.gpg"
+)
+
+EXCLUDES=()
+for EXCLUDE in "${BLACKLIST[@]}"; do
+    EXCLUDES+=(! -path "'$BASEDIR/$EXCLUDE'")
+done
+
+IGNORES=()
+for IGNORE in "${ASSETS[@]}"; do
+    IGNORES+=(! -name "'$IGNORE'")
+done
+
+YEAR=$(date '+%Y')
+SKIP="^[#;]\{2\} Copyright ([Cc]) \([[:digit:]]\{4\}-\)\?${YEAR} .*$"
+
+SINGLE_RX="^\([#;]\{2\} Copyright ([Cc])\) \([[:digit:]]\{4\}\) \(.*\)$"
+SINGLE_RULE="s/${SINGLE_RX}/\1 \2-${YEAR} \3/"
+DOUBLE_RX="^\([#;]\{2\} Copyright ([Cc]) [[:digit:]]\{4\}\)-\([[:digit:]]\{4\}\) \(.*\)$"
+DOUBLE_RULE="0,/${DOUBLE_RX}/ s/${DOUBLE_RX}/\1-${YEAR} \3/"
+
+while read FILE; do
+    if grep -qe "${SKIP}" $FILE; then
+        continue
+    fi
+
+    if grep -qe "$DOUBLE_RX" $FILE; then
+        # No in-place replacement because there are files with multiple headers
+        tac $FILE | sed "${DOUBLE_RULE}" | tac > /tmp/em-copyright
+        cat /tmp/em-copyright > $FILE
+        echo "$FILE has been updated. - DOUBLE"
+        continue
+    fi
+
+    if grep -qe "$SINGLE_RX" $FILE; then
+        sed -i "${SINGLE_RULE}" $FILE
+        echo "$FILE has been updated. - SINGLE"
+        continue
+    fi
+done <<< $(eval find "$BASEDIR/" -type f ${EXCLUDES[@]} ${IGNORES[@]})

core/aprilfool/zemacs.el

@@ -1,6 +1,6 @@
 ;;; zemacs.el --- Spacemacs 2016 April Fools File
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-command-line.el

@@ -1,6 +1,6 @@
 ;;; core-command-line.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-compilation.el

@@ -1,6 +1,6 @@
 ;;; core-compilation.el --- Spacemacs Core File -*- lexical-binding: t; no-byte-compile: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Eugene "JAremko" Yaremenko <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-configuration-layer.el

@@ -1,6 +1,6 @@
 ;;; core-configuration-layer.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-custom-settings.el

@@ -1,6 +1,6 @@
 ;;; core-custom-settings.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-customization.el

@@ -1,6 +1,6 @@
 ;;; core-customization.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Eugene "JAremko" Yaremenko <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-display-init.el

@@ -1,6 +1,6 @@
 ;;; core-display-init.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-documentation.el

@@ -1,6 +1,6 @@
 ;;; core-spacemacs.el --- Spacemacs Core File
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-dotspacemacs.el

@@ -1,6 +1,6 @@
 ;;; core-dotspacemacs.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-dumper.el

@@ -1,6 +1,6 @@
 ;;; core-dumper.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-early-funcs.el

@@ -2,7 +2,7 @@
 ;;
 ;; This file is sourced by emacs early-init.el file.
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-emacs-backports.el

@@ -1,6 +1,6 @@
 ;;; core-emacs-backports.el --- Spacemacs Core File  -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-env.el

@@ -1,6 +1,6 @@
 ;;; core-env.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-fonts-support.el

@@ -1,6 +1,6 @@
 ;;; core-fonts-support.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-funcs.el

@@ -1,6 +1,6 @@
 ;;; core-funcs.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-hooks.el

@@ -1,6 +1,6 @@
 ;;; core-hooks.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-jump.el

@@ -1,6 +1,6 @@
 ;;; core-jump.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-keybindings.el

@@ -1,6 +1,6 @@
 ;;; core-keybindings.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-load-paths.el

@@ -1,6 +1,6 @@
 ;;; core-load-paths.el --- Spacemacs Core File  -*- no-byte-compile: t; lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-micro-state.el

@@ -1,7 +1,7 @@
 ;;; -*- lexical-binding: t -*-
 ;;; core-micro-state.el --- Spacemacs Core File
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-progress-bar.el

@@ -1,6 +1,6 @@
 ;;; core-progress-bar.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-release-management.el

@@ -1,6 +1,6 @@
 ;;; core-spacemacs.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-spacebind.el

@@ -1,6 +1,6 @@
 ;;; core-spacebind.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Eugene "JAremko" Yaremenko <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-spacemacs-buffer.el

@@ -1,6 +1,6 @@
 ;;; core-spacemacs-buffer.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-spacemacs.el

@@ -1,6 +1,6 @@
 ;;; core-spacemacs.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-themes-support.el

@@ -1,6 +1,6 @@
 ;;; core-themes-support.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-toggle.el

@@ -1,6 +1,6 @@
 ;;; core-toggle.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-transient-state.el

@@ -1,7 +1,7 @@
 ;;; -*- lexical-binding: t -*-
 ;;; core-transient-state.el --- Spacemacs Core File
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Justin Burkett <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-use-package-ext.el

@@ -1,6 +1,6 @@
 ;;; core-use-package-ext.el --- Spacemacs Core File -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/core-versions.el

@@ -1,6 +1,6 @@
 ;;; core-versions.el --- Spacemacs Core File  -*- lexical-binding: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

core/templates/packages.el.template

@@ -1,6 +1,6 @@
 ;;; packages.el --- %LAYER_NAME% layer packages file for Spacemacs.
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: %USER_FULL_NAME% <%USER_MAIL_ADDRESS%>
 ;; URL: https://github.com/syl20bnr/spacemacs

early-init.el

@@ -1,6 +1,6 @@
 ;;; early-init.el --- Spacemacs Early Init File -*- no-byte-compile: t -*-
 ;;
-;; Copyright (c) 2020 Sylvain Benner & Contributors
+;; Copyright (c) 2020-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Miciah Dashiel Butler Masters <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

init.el

@@ -1,6 +1,6 @@
 ;;; init.el --- Spacemacs Initialization File -*- no-byte-compile: t -*-
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

layers/+chat/erc/config.el

@@ -1,6 +1,6 @@
 ;;; config.el --- erc Layer configuration File for Spacemacs
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

layers/+chat/erc/funcs.el

@@ -1,6 +1,6 @@
 ;;; funcs.el --- Spacemacs ERC Layer functions File
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

layers/+chat/erc/local/erc-sasl/erc-sasl.el

@@ -1,6 +1,6 @@
 ;; erc-sasl.el -- handle SASL PLAIN authentication
 
-;; Copyright (C) 2012 Joseph Gay
+;; Copyright (C) 2012-2022 Joseph Gay
 
 ;; Author: Joseph Gay <[email protected]>
 ;; Keywords: comm

layers/+chat/erc/local/erc-tex/erc-tex.el

@@ -1,6 +1,6 @@
 ;;; erc-tex.el --- LaTeX mathematical expressions rendering for ERC
 
-;; Copyright (C) 2009 David Vazquez
+;; Copyright (C) 2009-2022 David Vazquez
 
 ;; Last-modified: <2009-09-14 02:11:53 david>
 

layers/+chat/erc/local/erc-yank/erc-yank.el

@@ -1,6 +1,6 @@
 ;;; erc-yank --- Automagically create a Gist if pasting more than 5 lines
 
-;; Copyright (C) 2012 John Wiegley
+;; Copyright (C) 2012-2022 John Wiegley
 
 ;; Author: John Wiegley <[email protected]>
 ;; Created: 17 Jun 2012

layers/+chat/erc/packages.el

@@ -1,6 +1,6 @@
 ;;; packages.el --- erc Layer packages File for Spacemacs
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs

layers/+chat/jabber/funcs.el

@@ -1,6 +1,6 @@
 ;;; funcs.el --- Jabber layer functions File for Spacemacs
 ;;
-;; Copyright (c) 2012-2021 Sylvain Benner & Contributors
+;; Copyright (c) 2012-2022 Sylvain Benner & Contributors
 ;;
 ;; Author: Sylvain Benner <[email protected]>
 ;; URL: https://github.com/syl20bnr/spacemacs