plugins/ruby: prepare for shellcheck

plugins/available/ruby.plugin.bash

@@ -6,13 +6,14 @@ about-plugin 'ruby and rubygems specific functions and settings'
 # ~/.gem/ruby/${RUBY_VERSION}/bin/
 if _command_exists ruby && _command_exists gem
 then
-  pathmunge "$(ruby -e 'print Gem.user_dir')/bin" after
+	pathmunge "$(ruby -e 'print Gem.user_dir')/bin" after
 fi
 
-function remove_gem {
-  about 'removes installed gem'
-  param '1: installed gem name'
-  group 'ruby'
+function remove_gem()
+{
+	about 'removes installed gem'
+	param '1: installed gem name'
+	group 'ruby'
 
-  gem list | grep $1 | awk '{ print $1; }' | xargs sudo gem uninstall
+	gem list | grep "$1" | awk '{ print $1; }' | xargs sudo gem uninstall
 }