How can I reload a VIM plugin after VIM was started?
vim, vim-plugin
Solution
If there weren't an inclusion guard (`if ! exists('g:loaded_pluginname') ...`), you could simply `:runtime! plugin/pluginname.vim` (or `:source %` if it's currently opened) and all plugin definitions would be re-read.
But as most plugins (correctly) use such a guard, you need to `:unlet` that variable first:
:unlet g:loaded_pluginname | runtime! plugin/pluginname.vim
My ReloadScript plugin can do this with one command if the guard name adheres to the canonical naming, and the scriptease plugin has such a command, too.
Edit: Some plugins use differently named guard variables, or other ways that prevent reloading. The plugins from mattn (like emmet.vim) are quite elaborate; maybe there's some special mechanism; I don't use that plugin. You could ask the author for advice, though.
Problem
I am modifying an installed VIM plugin and in another Terminal tab I am testing the results. Each time I want to test the changes I have to restart VIM. Is there any faster way to do this process? How can I reload a VIM plugin after VIM was started? The plugin is installed via Vundle I have tried to run `:so %` that is supposed to reload the `.vimrc` file but I still cannot see my changes.