setup-util: replace sd help dependency with echo-regexp

Author: balupton

Diff for: commands/setup-util

@@ -116,10 +116,12 @@ function setup_util() (
 	local invocation="$0 $*"
 	function help {
 		# get content of this file between <installer-options> and </installer-options>
-		if __command_exists -- sd; then
-			installer_options="$(sd --flags=s '.+# <installer-options>\s+|\s+# </installer-options>.+|\t|local ' '' <"${BASH_SOURCE[0]}")"
+		local installer_options
+		# prevent endless `setup-util` recursion
+		if __command_exists -- deno; then
+			installer_options="$(echo-regexp -smgf '.+# <installer-options>\s+|\s+# </installer-options>.+|\t|local ' '' <"${BASH_SOURCE[0]}")"
 		else
-			installer_options="$(echo-style --notice='[sd] is required to display the installer option help, install with [setup-util-sd]')"
+			installer_options="$(echo-style --notice='[deno] is required to display the installer options, install with [setup-util-deno]')"
 		fi
 
 		# output the help