Way to enable “Services” menu for an application

Make sure that the service is being saved to ~/Library/Services as a .workflow file. It only seems to include Services in the menubar when they are saved to this path.

Additionally, ensure that the Services folder is not an alias to another folder. It should show up as a normal folder in finder. I had a similar problem and was able to resolve it by removing the alias I created in ~/Library/. Instead of my Services alias, I created the Services folder as a normal folder. Once I did that, every script that was saved there began to appear in the menu as expected.

WikiPedia places underscores for its entry URLs, but you can search any string (actually with spaces) with this URL scheme:

http://en.wikipedia.org/w/index.php?search=[query]

Replace [query] with you search query.

Try this for example: Search for "stack overflow"

It redirects to correct page. If it can't determine which entry to show, it shows a list of possible entries you can select from: Search for "stack overfloww".

TL;DR

Moreover, if you separate words in query with +, it works just fine. So all you need to do is replace

                               ↓↓↓↓↓↓
open "https://en.wikipedia.org/wiki/$(ruby -rcgi -e 'print CGI.escape $<.read.chomp')"

with this:

                               ↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
open "https://en.wikipedia.org/w/index.php?search=$(ruby -rcgi -e 'print CGI.escape $<.read.chomp')"