Set up complete-alias for bash

See: https://github.com/cykerway/complete-alias

.bash_completion

@@ -6,3 +6,17 @@
 
 
 complete -W '--force' dotfiles-install dotfiles-update
+
+
+# Automagical completion for all ~/.config/shell/aliases
+#
+# See: https://github.com/cykerway/complete-alias
+
+# shellcheck disable=SC2034  # Read by complete_alias sourced below
+COMPAL_AUTO_UNMASK=1
+# shellcheck disable=SC1091  # Third-party file, not linted
+. "${XDG_CONFIG_HOME:-$HOME/.config}/bash/complete_alias"
+
+if [ "${#BASH_ALIASES[@]}" -gt 0 ]; then
+    complete -F _complete_alias "${!BASH_ALIASES[@]}"
+fi

.config/bash/README.md

@@ -0,0 +1,5 @@
+# `bash`-related Configurations
+
+This folder contains
+    [`complete_alias`](./complete_alias),
+    which is sourced by [`~/.bash_completion`](../../.bash_completion).