How to figure out key map redefined in vim plugin?

Question

I installed many plugins by vundle. I found there maybe multiple plugins use the same hotkey. Is there smart way to figure out which plugin contains such hotkey?

There are some tutorial about key map. But I still haven't any idea.

Answer 1

A warning

Don't just install many plugins; you'll end up with a complex, slow, and indecipherable mess over time. Especially with plugin managers like Vundle, it's very easy to check out plugins. That benefit can turn bad if you forget to remove plugins that don't turn out to be useful for you.

How to check

In general, the plugin should advertise its features and defaults mappings (and hopefully provides configuration to change those!)

If you indeed have overlapping mappings, you should check:

1. The plugin's documentation.
2. The plugin's source code; look for :*[nore]map commands in the plugin/pluginname.vim script.
3. The actual existing mappings; the :map command lists those. You can restrict the command by modes (e.g. :imap for insert mode mappings) and starting keys (e.g. :map <Leader> lists all mappings that begin with the (configurable) Leader key).

How to change mappings

The canonical way to change plugin mappings is by defining your own mapping to <Plug>... targets that the plugin provides, e.g. :nmap <F1> <Plug>PluginNameMapping, in your ~/.vimrc. Some plugins also use global variables; refrain from modifying the plugin script itself; rather, complain to its author!

Answer 2

Yes, there is.

Use :verbose map <YOURKEY>. It will show you which file was the latest to modify this mapping.