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I'd like to have case-insensitive ex command completion in Vim.

I can accomplish this with:

set ignorecase " Maybe with set smartcase

However, the problem with this is that this (obviously) makes the search with / case-insensitive, which I don't want.

https://github.com/thinca/vim-ambicmd

This plugin did enable case-insensitive ex command completion (and even more functionality), but it also disabled the completion after that. For example, when I mapped <Tab> to the "expand" key, :NeoBundleUpdate <Tab> didn't list all the plugins managed by neobundle.vim but entered the <Tab> character.

I tried doing something like:

nmap / :set noignorecase<CR>/ nmap : :set ignorecase<CR>:

but this made Vim go crazy...

Is there any way I can achieve my goal of having case-insensitive command completion while retaining case-sensitive search?

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4 Answers 4

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7

The help :h /c says:

7. Ignoring case in a pattern /ignorecase If the 'ignorecase' option is on, the case of normal letters is ignored. 'smartcase' can be set to ignore case when the pattern contains lowercase letters only. /\c /\C When "\c" appears anywhere in the pattern, the whole pattern is handled like 'ignorecase' is on. The actual value of 'ignorecase' and 'smartcase' is ignored. "\C" does the opposite: Force matching case for the whole pattern. {only Vim supports \c and \C} Note that 'ignorecase', "\c" and "\C" are not used for the character classes. Examples: pattern 'ignorecase' 'smartcase' matches foo off - foo foo on - foo Foo FOO Foo on off foo Foo FOO Foo on on Foo \cfoo - - foo Foo FOO foo\C - - foo

That would suggest something like nnoremap / /\c or \C (if you need to change case-sensitivity) in your proposed way.

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1 Comment

Awesome! Minor thing, but uppercase \C worked for me :) Thanks!
3

I think you are looking for the 'wildignorecase' option.

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2 Comments

That's closer to what I want, but I also want user-defined commands to be case-insensitive; not just the files and directories.
This is exactly what I wanted. Put set wildignorecase in ~/.vimrc. Reference
1

You can keep ignorecase and smartcase for command-line completion and make your search case-sensitive with this mapping:

nnoremap / /\C

See :help \C.

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0

After getting a hint from @mike that going down the nmap path is the right way, I came up with the following functions:

nnoremap : :call IgnoreCase()<CR>: function! IgnoreCase() set ignorecase endfunction nnoremap / :call NoIgnoreCase()<CR>/ function! NoIgnoreCase() set noignorecase endfunction

This solved my problem just how I wanted. The only tiny thing that bugs me is that the text :call IgnoreCase() flickers when I hit :, but I guess that can't be helped.

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Regarding the verbose display of your command: I think there is a "silent" option somewhere,.. Please refer to the help/google. This should also be possible.
@mike <silent> mapping is no good because it doesn't show the : when I first hit it. The :silent command still shows the call to IgnoreCase because the whole :silent call IgnoreCase() is the one who's flickering. I think this is something that can't be helped.

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