Add basic bash-completion wrt #109

.bash-completion

@@ -0,0 +1,11 @@
+_ghcup()
+{
+	local cur
+	COMPREPLY=()
+	cur="${COMP_WORDS[COMP_CWORD]}"
+	if [[ ${#COMP_WORDS[*]} -le 2 ]]; then
+		COMPREPLY=($(compgen -W "$(ghcup --list-commands)" -- $cur))
+	fi
+	return 0
+} &&
+complete -F _ghcup ghcup

ghcup

@@ -2049,6 +2049,18 @@ while [ $# -gt 0 ] ; do
     -V|--version)
         printf "%s\\n" "${VERSION}"
         exit 0;;
+    --list-commands)
+        echo "changelog
+compile
+debug-info
+install
+install-cabal
+list
+print-system-reqs
+rm
+set
+upgrade"
+        exit 0;;
     -h|--help)
         usage;;
     -w|--wget)