diff --git a/.aliases b/.aliases
index 35446a14288..3387fa0609e 100644
--- a/.aliases
+++ b/.aliases
@@ -105,9 +105,9 @@ alias showdesktop="defaults write com.apple.finder CreateDesktop -bool true && k
 # URL-encode strings
 alias urlencode='python -c "import sys, urllib as ul; print ul.quote_plus(sys.argv[1]);"'
 
-# Merge PDF files
-# Usage: `mergepdf -o output.pdf input{1,2,3}.pdf`
-alias mergepdf='/System/Library/Automator/Combine\ PDF\ Pages.action/Contents/Resources/join.py'
+# Merge PDF files, preserving hyperlinks
+# Usage: `mergepdf input{1,2,3}.pdf`
+alias mergepdf='gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=_merged.pdf'
 
 # Disable Spotlight
 alias spotoff="sudo mdutil -a -i off"
@@ -130,9 +130,6 @@ for method in GET HEAD POST PUT DELETE TRACE OPTIONS; do
 	alias "${method}"="lwp-request -m '${method}'"
 done
 
-# Make Grunt print stack traces by default
-command -v grunt > /dev/null && alias grunt="grunt --stack"
-
 # Stuff I never really use but cannot delete either because of http://xkcd.com/530/
 alias stfu="osascript -e 'set volume output muted true'"
 alias pumpitup="osascript -e 'set volume output volume 100'"
diff --git a/.bash_profile b/.bash_profile
index 29717373d18..f79b6145e40 100644
--- a/.bash_profile
+++ b/.bash_profile
@@ -26,14 +26,16 @@ for option in autocd globstar; do
 done;
 
 # Add tab completion for many Bash commands
-if which brew &> /dev/null && [ -f "$(brew --prefix)/share/bash-completion/bash_completion" ]; then
-	source "$(brew --prefix)/share/bash-completion/bash_completion";
+if which brew &> /dev/null && [ -r "$(brew --prefix)/etc/profile.d/bash_completion.sh" ]; then
+	# Ensure existing Homebrew v1 completions continue to work
+	export BASH_COMPLETION_COMPAT_DIR="$(brew --prefix)/etc/bash_completion.d";
+	source "$(brew --prefix)/etc/profile.d/bash_completion.sh";
 elif [ -f /etc/bash_completion ]; then
 	source /etc/bash_completion;
 fi;
 
 # Enable tab completion for `g` by marking it as an alias for `git`
-if type _git &> /dev/null && [ -f /usr/local/etc/bash_completion.d/git-completion.bash ]; then
+if type _git &> /dev/null; then
 	complete -o default -o nospace -F _git g;
 fi;
 
diff --git a/.bash_prompt b/.bash_prompt
index 3ff63eb6821..74db549f994 100644
--- a/.bash_prompt
+++ b/.bash_prompt
@@ -16,49 +16,45 @@ prompt_git() {
 	local branchName='';
 
 	# Check if the current directory is in a Git repository.
-	if [ $(git rev-parse --is-inside-work-tree &>/dev/null; echo "${?}") == '0' ]; then
-
-		# check if the current directory is in .git before running git checks
-		if [ "$(git rev-parse --is-inside-git-dir 2> /dev/null)" == 'false' ]; then
-
-			# Ensure the index is up to date.
-			git update-index --really-refresh -q &>/dev/null;
-
-			# Check for uncommitted changes in the index.
-			if ! $(git diff --quiet --ignore-submodules --cached); then
-				s+='+';
-			fi;
-
-			# Check for unstaged changes.
-			if ! $(git diff-files --quiet --ignore-submodules --); then
-				s+='!';
-			fi;
-
-			# Check for untracked files.
-			if [ -n "$(git ls-files --others --exclude-standard)" ]; then
-				s+='?';
-			fi;
-
-			# Check for stashed files.
-			if $(git rev-parse --verify refs/stash &>/dev/null); then
-				s+='$';
-			fi;
-
+	git rev-parse --is-inside-work-tree &>/dev/null || return;
+
+	# Check for what branch we’re on.
+	# Get the short symbolic ref. If HEAD isn’t a symbolic ref, get a
+	# tracking remote branch or tag. Otherwise, get the
+	# short SHA for the latest commit, or give up.
+	branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
+		git describe --all --exact-match HEAD 2> /dev/null || \
+		git rev-parse --short HEAD 2> /dev/null || \
+		echo '(unknown)')";
+
+	# Early exit for Chromium & Blink repo, as the dirty check takes too long.
+	# Thanks, @paulirish!
+	# https://github.com/paulirish/dotfiles/blob/dd33151f/.bash_prompt#L110-L123
+	repoUrl="$(git config --get remote.origin.url)";
+	if grep -q 'chromium/src.git' <<< "${repoUrl}"; then
+		s+='*';
+	else
+		# Check for uncommitted changes in the index.
+		if ! $(git diff --quiet --ignore-submodules --cached); then
+			s+='+';
 		fi;
+		# Check for unstaged changes.
+		if ! $(git diff-files --quiet --ignore-submodules --); then
+			s+='!';
+		fi;
+		# Check for untracked files.
+		if [ -n "$(git ls-files --others --exclude-standard)" ]; then
+			s+='?';
+		fi;
+		# Check for stashed files.
+		if $(git rev-parse --verify refs/stash &>/dev/null); then
+			s+='$';
+		fi;
+	fi;
 
-		# Get the short symbolic ref.
-		# If HEAD isn’t a symbolic ref, get the short SHA for the latest commit
-		# Otherwise, just give up.
-		branchName="$(git symbolic-ref --quiet --short HEAD 2> /dev/null || \
-			git rev-parse --short HEAD 2> /dev/null || \
-			echo '(unknown)')";
-
-		[ -n "${s}" ] && s=" [${s}]";
+	[ -n "${s}" ] && s=" [${s}]";
 
-		echo -e "${1}${branchName}${2}${s}";
-	else
-		return;
-	fi;
+	echo -e "${1}${branchName}${2}${s}";
 }
 
 if tput setaf 1 &> /dev/null; then
diff --git a/.config/git/template/HEAD b/.config/git/template/HEAD
new file mode 100644
index 00000000000..b870d82622c
--- /dev/null
+++ b/.config/git/template/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/main
diff --git a/.exports b/.exports
index ae9b020cad9..02cd3cdae8d 100644
--- a/.exports
+++ b/.exports
@@ -32,3 +32,6 @@ export MANPAGER='less -X';
 # Avoid issues with `gpg` as installed via Homebrew.
 # https://stackoverflow.com/a/42265848/96656
 export GPG_TTY=$(tty);
+
+# Hide the “default interactive shell is now zsh” warning on macOS.
+export BASH_SILENCE_DEPRECATION_WARNING=1;
diff --git a/.gitconfig b/.gitconfig
index b44243359b9..b4d26657725 100644
--- a/.gitconfig
+++ b/.gitconfig
@@ -13,7 +13,7 @@
 	di = !"d() { git diff --patch-with-stat HEAD~$1; }; git diff-index --quiet HEAD -- || clear; d"
 
 	# Pull in remote changes for the current repository and all its submodules
-	p = !"git pull; git submodule foreach git pull origin master"
+	p = pull --recurse-submodules
 
 	# Clone a repository including all submodules
 	c = clone --recursive
@@ -56,7 +56,7 @@
 	# Find commits by commit message
 	fm = "!f() { git log --pretty=format:'%C(yellow)%h  %Cblue%ad  %Creset%s%Cgreen  [%cn] %Cred%d' --decorate --date=short --grep=$1; }; f"
 
-	# Remove branches that have already been merged with master
+	# Remove branches that have already been merged with main
 	# a.k.a. ‘delete merged’
 	dm = "!git branch --merged | grep -v '\\*' | xargs -n 1 git branch -d"
 
@@ -79,6 +79,9 @@
 		fi \
 	}; f"
 
+	# Show the user email for the current repository.
+	whoami = config user.email
+
 [apply]
 
 	# Detect whitespace errors when applying a patch
@@ -185,3 +188,7 @@
 [url "git://gist.github.com/"]
 
 	insteadOf = "gist:"
+
+[init]
+
+	templateDir = ~/.config/git/template/
diff --git a/.macos b/.macos
index 2ce16068182..e7da9cbded0 100755
--- a/.macos
+++ b/.macos
@@ -22,9 +22,6 @@ while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &
 #sudo scutil --set LocalHostName "0x6D746873"
 #sudo defaults write /Library/Preferences/SystemConfiguration/com.apple.smb.server NetBIOSName -string "0x6D746873"
 
-# Set standby delay to 24 hours (default is 1 hour)
-sudo pmset -a standbydelay 86400
-
 # Disable the sound effects on boot
 sudo nvram SystemAudioVolume=" "
 
@@ -96,12 +93,6 @@ defaults write com.apple.helpviewer DevMode -bool true
 # in the login window
 sudo defaults write /Library/Preferences/com.apple.loginwindow AdminHostInfo HostName
 
-# Restart automatically if the computer freezes
-sudo systemsetup -setrestartfreeze on
-
-# Never go into computer sleep mode
-sudo systemsetup -setcomputersleep Off > /dev/null
-
 # Disable Notification Center and remove the menu bar icon
 launchctl unload -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plist 2> /dev/null
 
@@ -126,20 +117,6 @@ defaults write NSGlobalDomain NSAutomaticSpellingCorrectionEnabled -bool false
 #sudo rm -rf /System/Library/CoreServices/DefaultDesktop.jpg
 #sudo ln -s /path/to/your/image /System/Library/CoreServices/DefaultDesktop.jpg
 
-###############################################################################
-# SSD-specific tweaks                                                         #
-###############################################################################
-
-# Disable hibernation (speeds up entering sleep mode)
-sudo pmset -a hibernatemode 0
-
-# Remove the sleep image file to save disk space
-sudo rm /private/var/vm/sleepimage
-# Create a zero-byte file instead…
-sudo touch /private/var/vm/sleepimage
-# …and make sure it can’t be rewritten
-sudo chflags uchg /private/var/vm/sleepimage
-
 ###############################################################################
 # Trackpad, mouse, keyboard, Bluetooth accessories, and input                 #
 ###############################################################################
@@ -195,6 +172,47 @@ sudo systemsetup -settimezone "Europe/Brussels" > /dev/null
 # Stop iTunes from responding to the keyboard media keys
 #launchctl unload -w /System/Library/LaunchAgents/com.apple.rcd.plist 2> /dev/null
 
+###############################################################################
+# Energy saving                                                               #
+###############################################################################
+
+# Enable lid wakeup
+sudo pmset -a lidwake 1
+
+# Restart automatically on power loss
+sudo pmset -a autorestart 1
+
+# Restart automatically if the computer freezes
+sudo systemsetup -setrestartfreeze on
+
+# Sleep the display after 15 minutes
+sudo pmset -a displaysleep 15
+
+# Disable machine sleep while charging
+sudo pmset -c sleep 0
+
+# Set machine sleep to 5 minutes on battery
+sudo pmset -b sleep 5
+
+# Set standby delay to 24 hours (default is 1 hour)
+sudo pmset -a standbydelay 86400
+
+# Never go into computer sleep mode
+sudo systemsetup -setcomputersleep Off > /dev/null
+
+# Hibernation mode
+# 0: Disable hibernation (speeds up entering sleep mode)
+# 3: Copy RAM to disk so the system state can still be restored in case of a
+#    power failure.
+sudo pmset -a hibernatemode 0
+
+# Remove the sleep image file to save disk space
+sudo rm /private/var/vm/sleepimage
+# Create a zero-byte file instead…
+sudo touch /private/var/vm/sleepimage
+# …and make sure it can’t be rewritten
+sudo chflags uchg /private/var/vm/sleepimage
+
 ###############################################################################
 # Screen                                                                      #
 ###############################################################################
@@ -308,7 +326,7 @@ defaults write com.apple.finder OpenWindowForNewRemovableDisk -bool true
 /usr/libexec/PlistBuddy -c "Set :StandardViewSettings:IconViewSettings:iconSize 80" ~/Library/Preferences/com.apple.finder.plist
 
 # Use list view in all Finder windows by default
-# Four-letter codes for the other view modes: `icnv`, `clmv`, `Flwv`
+# Four-letter codes for the other view modes: `icnv`, `clmv`, `glyv`
 defaults write com.apple.finder FXPreferredViewStyle -string "Nlsv"
 
 # Disable the warning before emptying the Trash
@@ -318,7 +336,7 @@ defaults write com.apple.finder WarnOnEmptyTrash -bool false
 defaults write com.apple.NetworkBrowser BrowseAllInterfaces -bool true
 
 # Show the ~/Library folder
-chflags nohidden ~/Library
+chflags nohidden ~/Library && xattr -d com.apple.FinderInfo ~/Library
 
 # Show the /Volumes folder
 sudo chflags nohidden /Volumes
@@ -424,6 +442,7 @@ sudo ln -sf "/Applications/Xcode.app/Contents/Developer/Applications/Simulator (
 # 10: Put display to sleep
 # 11: Launchpad
 # 12: Notification Center
+# 13: Lock Screen
 # Top left screen corner → Mission Control
 defaults write com.apple.dock wvous-tl-corner -int 2
 defaults write com.apple.dock wvous-tl-modifier -int 0
@@ -505,6 +524,7 @@ defaults write com.apple.Safari com.apple.Safari.ContentPageGroupIdentifier.WebK
 # Disable Java
 defaults write com.apple.Safari WebKitJavaEnabled -bool false
 defaults write com.apple.Safari com.apple.Safari.ContentPageGroupIdentifier.WebKit2JavaEnabled -bool false
+defaults write com.apple.Safari com.apple.Safari.ContentPageGroupIdentifier.WebKit2JavaEnabledForLocalFiles -bool false
 
 # Block pop-up windows
 defaults write com.apple.Safari WebKitJavaScriptCanOpenWindowsAutomatically -bool false
diff --git a/.osx b/.osx
index 4eacb4e03b7..df12aac66b3 100644
--- a/.osx
+++ b/.osx
@@ -1 +1 @@
-# 301 https://github.com/mathiasbynens/dotfiles/blob/master/.macos
+# 301 https://github.com/mathiasbynens/dotfiles/blob/main/.macos
diff --git a/README.md b/README.md
index c6fed2ea8f5..d7bca276ad5 100644
--- a/README.md
+++ b/README.md
@@ -31,14 +31,14 @@ set -- -f; source bootstrap.sh
 To install these dotfiles without Git:
 
 ```bash
-cd; curl -#L https://github.com/mathiasbynens/dotfiles/tarball/master | tar -xzv --strip-components 1 --exclude={README.md,bootstrap.sh,.osx,LICENSE-MIT.txt}
+cd; curl -#L https://github.com/mathiasbynens/dotfiles/tarball/main | tar -xzv --strip-components 1 --exclude={README.md,bootstrap.sh,.osx,LICENSE-MIT.txt}
 ```
 
 To update later on, just run that command again.
 
 ### Specify the `$PATH`
 
-If `~/.path` exists, it will be sourced along with the other files, before any feature testing (such as [detecting which version of `ls` is being used](https://github.com/mathiasbynens/dotfiles/blob/aff769fd75225d8f2e481185a71d5e05b76002dc/.aliases#L21-26)) takes place.
+If `~/.path` exists, it will be sourced along with the other files, before any feature testing (such as [detecting which version of `ls` is being used](https://github.com/mathiasbynens/dotfiles/blob/aff769fd75225d8f2e481185a71d5e05b76002dc/.aliases#L21-L26)) takes place.
 
 Here’s an example `~/.path` file that adds `/usr/local/bin` to the `$PATH`:
 
diff --git a/bootstrap.sh b/bootstrap.sh
index 6844b84a624..5894c6c22f2 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -2,7 +2,7 @@
 
 cd "$(dirname "${BASH_SOURCE}")";
 
-git pull origin master;
+git pull origin main;
 
 function doIt() {
 	rsync --exclude ".git/" \
diff --git a/brew.sh b/brew.sh
index 5c8963d6e6d..26508ee43dd 100755
--- a/brew.sh
+++ b/brew.sh
@@ -22,7 +22,7 @@ brew install moreutils
 brew install findutils
 # Install GNU `sed`, overwriting the built-in `sed`.
 brew install gnu-sed --with-default-names
-# Install Bash 4.
+# Install a modern version of Bash.
 brew install bash
 brew install bash-completion2
 
@@ -83,6 +83,7 @@ brew install ack
 #brew install exiv2
 brew install git
 brew install git-lfs
+brew install gs
 brew install imagemagick --with-webp
 brew install lua
 brew install lynx