Adding Special Characters to iskeyword

Neovim
1

Hello everyone,

I have a quick question I wanted to ask. I use neovim for programming in a few languages, the main ones being python3, common-lisp, and POSIX shell script. I often set iskeyword for these languages so I can get better auto-completion (granted I recently started using nvim-compe which doesn’t support iskeyword), but have run into an issue.

In common-lisp , can be used for classes and I would like to add it to iskeyword so I can complete classes faster, but whenever I try to it:

opt.iskeyword:append({ '-' , ',' })

I get an error about an incorrect argument being passed. Having read the help page for iskeyword, :h iskeyword, I know this must be because it is a comma separated list of characters. Is there anyway to add , to iskeyword?

As an aside, while I don’t do much C I often have to deep dive into it to manage different projects. Is there anyway to add -> to iskeyword to help with completing structs?

Thank you for your time.

2

Hello, I’m doing exactly what your are doing there and It’s working as expected, added to iskeyword but I’m running nightly. I do get an error when I set iskeyboard for the second time appending said items.

-- Run
vim.opt.iskeyword:append({'-', ','})
print(vim.inspect(vim.opt.iskeyword))

-- Output
{
  _info = {
    allows_duplicates = false,
    commalist = true,
    default = "@,48-57,_,192-255",
    flaglist = false,
    global_local = false,
    last_set_chan = 0,
    last_set_linenr = 0,
    last_set_sid = 0,
    name = "iskeyword",
    scope = "buf",
    shortname = "isk",
    type = "string",
    was_set = false
  },
  _name = "iskeyword",
  _value = "@,48-57,_,192-255,-,,",
  <metatable> = <1>{
    __add = <function 1>,
    __index = <table 1>,
    __pow = <function 2>,
    __sub = <function 3>,
    _set = <function 4>,
    append = <function 5>,
    get = <function 6>,
    prepend = <function 7>,
    remove = <function 8>
  }
}

-- Run
vim.opt.iskeyword:append({'-', ','})
-- Output
/usr/share/nvim/runtime/lua/vim/_meta.lua:180: E474: Invalid argument
stack traceback:
	[C]: in function 'nvim_buf_set_option'
	/usr/share/nvim/runtime/lua/vim/_meta.lua:180: in function 'set_scoped_option'
	/usr/share/nvim/runtime/lua/vim/_meta.lua:682: in function </usr/share/nvim/runtime/lua/vim/_meta.lua:680>

So my recommendations would be to first use the “after” directory :h after and create a file for the languages you want python3.lua there put your vim.opt.iskey.... but make sure the things you are appending aren’t already there by first calling vim.opt.iskeyword:get() and doing your custom logic (to avoid errors). Also would recommend to use vim.opt_local insteadof opt to set the variables local to a buffer that has the filetype you want to avoid messing up with everything else.

3

Use opt_local and change just a specific filetype, in the sh files for example the dollar symbol matters most than in lua.

-- Filename: /home/sergio/.config/nvim/after/ftplugin/sh.lua
-- Last Change: Thu, 16 Jun 2022 - 12:38

vim.opt_local.iskeyword:append("$")