George A Duckett - Vi and Vim: Questions and Answers
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I was about to answer a question but realized that my answer depends on a key binding provided by a plugin I have installed. Even worse, I don't know which plugin provides it.
The only way I know to solve this problem would be to "binary search" my installed plugins by disabling half and enabling the other half. I use Vundle to manage my plugins so each iteration would only require me to comment out part of a plugin list but that's still a clumsy procedure.
Is there a better way to determine which plugin is responsible for a given key binding? Is there a way to determine if a given key binding is instead provided by my vimrc file directly?
I realize Vim doesn't have a builtin notion of plugins, so maybe the question is more precisely phrased as "How can I determine which file containing vimscript is responsible for a given key binding?".
You can use the following: :verbose map replacing with the key bind you're looking for. Prints something like this:
Last set from ~/.vim/bundle/ctrlp.vim/plugin/ctrlp.vim
How can I figure out which key is set as my , and how do I remap it?
By default your is \, backslash. You can check it with:
:echo mapleaderIf this gives you an E121: Undefined variable: mapleader, it means it's set to the default of \. If it gives you something else, then it's that :-)
You can easily remap it. I mapped it to the space-bar:
:let mapleader = "\"Note that the value of mapleader is used at the moment the mapping is defined. So this example:
let mapleader = ","nnoremap a :echo "Hey there ,"let mapleader = "\"nnoremap a :echo "Hey there space"Will produce two mappings: ,a and a.
This means that the current value of mapleader is not necessarily the value that was used to define your mappings!
In addition, there's the maplocalleader, which is the same as mapleader, except that it's used by and that it's local to the current buffer.
More information about can be found in Vim's help with :help mapleader.
You can display the current leader key like this :let mapleader
Pressing Ctrl-w in Insert mode will delete the previous word. It is equivalent to Ctrl-Backspace in Windows, and Opt-Delete in OS X, and really speeds up typing.
Vim has the separate concepts of word and WORD (see :help word). This is invaluable for text navigation: it is the difference between w and W, b and B, and so on.
Ctrl-w operates on word. Is there a similar instruction for WORD?
I don't believe there is one built in, but you can map one yourself in your vimrc:
inoremap vBdaI'm currently doing a lot of work with both Ruby and JavaScript. I know that I can run my Ruby files with :! ruby % and likewise my JavaScript with :! node %, and that I can bind either of those to, eg, ,b. How can I set things up so that I can just bind a single command that will check the extension of the file I'm editing and run the appropriate command?
You could use :make for this; you can set makeprg (short for make program) to any command.
Some examples:
au FileType ruby set makeprg=ruby\ %au FileType javascript set makeprg=node\ %au FileType python set makeprg=python\ %au FileType coffeescript set makeprg=coffee\ -c\ %noremap ,b :make:make was originally intended to run the make tool to build the project, but languages such as Ruby or Javascript don't need compiling, to setting it to something that will run the code makes sense.
I can already map a key combination in insert mode:
:inoremap abcHowever, this has a few drawbacks:
When typing a partial version of the sequence, such as
ab, the characters aren't actually displayed for a short amount of time, since it's "waiting" to see whether you're going to type the full command. This is undesirable; I want to map a chain of letters without pausing if a partial substring of the chain is entered.If I type
ab, then pause (and wait until the characters actually appear as mentioned in the above point), then type thec, the command is not executed. I want the command to be executed no matter how long I wait.
I would use an iab, but that doesn't work because:
- It requires entering a space after the string
- I can't execute arbitrary commands with it, only insert a string of text.
Is there any way to execute a command or keystrokes if a certain string is entered in insert mode, without using a map (which will annoyingly pause every time I type an
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