Vim reduce delay after issuing a command

Question

I have mappings within my .vimrc to open or switch to commonly used applications.

Use Case: I have 10 open applications and I'm in MacVim. It's faster to issue <Leader>sc which is mapped to map <Leader>sc :silent !open /Applications/Google\ Chrome.app<CR>, than to Command+Tab several times to get to the Chrome app.

However, there is a delay by vim from the time I issue <Leader>sc to when it executes the action.

How can I reduce this delay just for this mapping? I'd like this to be as instantaneous as running open /Applications/Google\ Chrome.app from the command line, however vim introduces a slight delay before it executes that command.

Edit: I noticed there is a timeoutlen setting, however that is global. I'd like something similar just for these mappings.

Answer 1

This is most likely because you have another mapping that begins with <Leader>sc and Vim is waiting to see if you are just typing the shorter mapping, or intend to type the other, longer mapping.

The only way around this problem is to change one of the mappings so Vim knows there is no ambiguity, which should cause it to instantly run the command.

Typing ":map <leader>sc" and pressing enter should show you all mappings that start with that sequence.

Answer 2

You can't adjust timeoutlen for specific commands/mappings in Vim. You could probably do that for a specific buffer/window/tab but it would still be the same value for any command/mapping in that specific context.

But I think that the delay is caused by the use of open here.

Why don't you use Quicksilver? I've used it for years: it provides the same mechanism whatever context I happen to be in. Whether I'm in Vim, iTunes, Outlook or Preview I can type the exact same key sequence to switch to Chrome. This ubiquity alone makes it a must have for me. That and the speed of <C-Space>c<CR>.

In your system, you could theoretically save time when doing Vim > Chrome but how do you do Chrome > Vim? AFAIK you can't use <leader>sv in Chrome so you must resort to another mechanism. That's at least two systems to setup and maintain or at least a custom very effective one and a default less effective one.