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Omni completion

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created February 16, 2008 · complexity basic · author Metacosm · version 7.0

Omni completion provides smart autocompletion for programs. When invoked, the text before the cursor is inspected to guess what might follow. A popup menu offers word completion choices that may include struct and class members, system functions, and more. A similar feature in Microsoft Visual Studio is known as IntelliSense.


To turn on omnicompletion, add the following to your vimrc:

filetype plugin on
set ofu=syntaxcomplete#Complete

Various languages are supported in Vim 7, including C. Omni completion scripts can be written to support other languages, and to customize behavior. :help new-omni-completion :help compl-omni

Windows users need to install a recent version of Exuberant Ctags (Ctags 5.7, released September 2007, or newer, is recommended). :help ft-c-omni

See C++ code completion for omni completion in C++ programs.

Related tips


  • This is to be an overview of omnicompletion, with links to more detailed tips as required.
  • Need to make sense of related tips, and probably merge a few.
  • Meanwhile, keep the following list as a useful reference for readers and editors.

Popup menu and mappings

Random thoughts on IDE

Usage with Python



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