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I would like to use case-ignoring completion in the file arguments I pass to (n)vim in the internal command prompt:

  1. For example, :edit case<tab> should suggest caselower.txt and Caseupper.txt.

  2. Or :edit some-<tab> should offer completions including some_underscore.txt in addition to some-dash.txt)

I'm calling this completion suggestions in the prompt line (I'm not sure what else to search for in (n)vim :help, :com[mands] is not quite right.) I would like behavior equivalently to setting completion-ignore-case and completion-map-case in bash/readline. (bash: bind '[set ... on]' .inputrc: set [...] on).

Can I set up this completion ignore & map case in vim? If so, how? (Interested for vi/vim/Neovim)

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  • Could you tell us which OS your are using (Windows, MacOS, Linux)?
    – Vivian De Smedt
    Jan 21 at 8:06
  • On Windows the completion is case insensitive like the file system is. But - and _ are treated as different characters. Could I ask you why you would like completion to be case insensitive? Are you looking for some kind of fuzzy completion like in (CtrlP, FZF or Clap)?
    – Vivian De Smedt
    Jan 21 at 9:31
  • I use macOS & Linux.
    – mcint
    Jan 22 at 4:22
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    It seems - and _ are not case-insensitive matches in vim/nvim.
    – mcint
    Jan 22 at 4:23

2 Answers 2

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Vim provides file completion based on the filesystem characteristics (i.e. case sensitive for Linux, case insensitive for Windows).

As Matt mention you can force case insensitiveness using:

set wildignorecase

It also provide completion based on wildcard (e.g. ?, *)

But it doesn't provide fuzzy completion.

:help wildoption

Currently fuzzy matching based completion
is not supported for file and directory names and
instead wildcard expansion is used.

There are a number of plugin that helps user to find their files using some fuzzy logic the most famous are:

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  • Thanks for the more extensive clarification of the limitations! :)
    – mcint
    Jan 22 at 4:24
  • Welcome to Vim :-) Thanks for the feedback, @Matt also clarifed the wildignorecase flag.
    – Vivian De Smedt
    Jan 22 at 5:10
2

Can I set up this completion ignore & map case in vim? If so, how?

Yes, :set wildignorecase

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