contextcomplete is a plugin that decides what kind of insert completion to use based on the text that is before the cursor. This is triggered by a key which is customizable by the user. Regexes are used to determine which type of completion is used, which can also be defined by the user.
If you don't have any other preferred installation method, I recommend using
pathogen. Then, all you have to do is
cd ~/.vim/bundle and do git clone https://github.com/4Evergreen4/vim-contextcomplete.git
See doc/contextcomplete.txt.
Thank you to bairu for helping me debug and write this plugin.
contextcomplete is distributed under the same terms as Vim itself. See
:help license