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Some build-in search engine of Opera have auto-complete feature. How can I add these capability to my custom search engines? `

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Do you mean auto-suggest or auto-complete? Auto-suggest is indeed depending on the actual search engine. And what Opera version and OS are you using? –  nixda Jun 15 '13 at 8:01
    
@nixda I mean what you called it "auto-suggest". Version 12.15 Build 1748 Platform Win32 System Windows 7 –  PHPst Jun 15 '13 at 11:58

1 Answer 1

up vote 1 down vote accepted

Maybe the Opera extension AutoComplete is what you are looking for.

This extension provides Autocomplete for the text input box. Data which was 
input previously can be shared with any sites. And presents words suggested 
by search engines.

= Features
* Complete from data you input before
* Complete from suggests by search engines

AutoComplete works together with auto suggested words from search engines. There are a couple of search engines out there which support auto suggest beside google, wikipedia and bing. But opera hasn't added them to their default search.ini file so far. Fortunately you can add them on your own.

You will find your search.ini file at one of these paths (after you have added a custom search engine)

  • Installed mode: C:\Users\USERNAME\AppData\Roaming\Opera\Opera\search.ini
  • Portable mode: ..\Opera\profile\search.ini

The highlighted part is the important part which can be added manually. The Suggest URL must be known. I found some Suggest URLs simply by googling around.

enter image description here

tested list of Suggest URLs for Opera

You find a good explanation how the search.ini works on this blog.

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Thanks. How can I create a simpe opera extension that add my site to search engine with auto-suggestion capability? –  PHPst Jun 15 '13 at 12:00
    
@PHPst I'm sorry. This is beyond my knowledge –  nixda Jun 15 '13 at 12:38

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