Conditionally load bundles

[kevinjqiu]

Add a mechanism for loading bundles based on conditions, such as filetype detection?
For example, if I'm editing a Python file, I don't necessarily need to load all the Ruby plugins.

Feel free to close this issue if there's already a workaround I'm not aware of.

[gmarik]

Hey kevinjqiu!

Vim handles plugin loading, Vundle only manages runtimepath.
The only case when Vundle sources scripts is when script is installed explicitly using :BundleInstall plugin_name command.

Let me know if we're on same page!
Thanks

[kevinjqiu]

Hi,

I was referring to my vim state after BundleInstall. Hypothetically I have

Bundle "Python.vim"
Bundle "Ruby.vim"

and then did a :BundleInstall, now both plugins are in my .vim/bundle folder, and are automatically loaded because their paths are in the runtimepath. But if I'm editing foo.rb, I don't need to load Python.vim and its related files.

I'm wondering if there's a way to conditionally load the plugins.

[gmarik]

So you're suggesting that Vundle should remove ruby.vim from runtimepath in case you're editing python file?

That's sounds like a feature to me if I'm understanding you correctly.
Or do you have specific issue that is caused by this behaviour?

[kevinjqiu]

Yeah, it is a feature request rather than an "issue". Sorry if it was misleading :)
I'd be better if the filetype (or other criteria) determines which runtime paths to include, and hence which plugins to include.

[gmarik]

I see now.
Vim automatically loads scripts, no matter what file type, that reside in script_name/plugin/*.vim dir. I believe if script's author considers putting scripts there instead ftplugin/ then that's "design" issue.
This might save couple CPU cycles of traversing "unrelated" plugins, but it adds lots of complexity(cuz i have no idea how to do that now, unless you know ;)

I may be mistaken though...

[kevinjqiu]

It may very well be an optimization that's not necessary. My idea is something like autocmd BufRead *.py Call function_that_adds_python_plugins_to_runtime_path()
I may give it a swing, but I'm not fluent at VimScript, so don't hold your breath :)

[gmarik]

Ya, it would be great if you could play with that...
In meantime I will try to resolve other issues ;)
Thanks! )

[gmarik]

you may want to look into tplugin (on demand loader)

[rainux]

Load bundles based on filetype is an interesting idea. Before read this issue, I already implemented a on demand mechanism that use tags and the new command BundleBind! manually. I'll try to figure out if it possible to implement this.

[MarcWeber]

#364