Search Completion

Vimium supports search completion for custom search engines (not for the default search engine). Search completion is activated whenever the search URL of a custom search engine matches one of the completion engines built into Vimium.

Here are a couple of examples of how the vomnibar looks with search completion.

Available completion engines

The current list of completion engines (and the regular expressions which their search URLs must match) is available here.

Here is a list of some example custom search engines for which completion is available.

# Wikipedia.
w: http://en.wikipedia.org/w/index.php?title=Special:Search&search=%s Wikipedia

# Google.
g: https://www.google.ie/search?q=%s Google
l: https://www.google.ie/search?btnI&q=%s I'm feeling lucky...
gm: https://www.google.ie/maps?q=%s Google maps

# Youtube.
y: http://www.youtube.com/results?search_query=%s Youtube

#DuckDuckGo
d: https://duckduckgo.com/?ia=about&q=%s DuckDuckGo

# Amazon
az: http://www.amazon.co.uk/s/?field-keywords=%s Amazon

# Dictionary (Merriam-Webster).
dw: http://www.merriam-webster.com/dictionary/%s Merriam-Webster

# Bing
b: https://www.bing.com/search?q=%s Bing

Contributing completion engines

PRs contributing completion engines are most welcome. Completion engines are not hard to write. Here's an example:

class DuckDuckGo extends RegexpEngine
  # Example search URL: https://duckduckgo.com/?q=%s
  constructor: -> super "^https?://([a-z]+\.)?duckduckgo\.com/"
  getUrl: (queryTerms) -> Utils.createSearchUrl queryTerms, "https://duckduckgo.com/ac/?q=%s"
  parse: (xhr) ->
    suggestion.phrase for suggestion in JSON.parse xhr.responseText

For details and more examples, see here.