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Currently, I'm trying to make a pretty minimal custom status line that suits my needs. One element of it, however, is a diagnostics report that depends on another plugin (coc.nvim). With a function, I can display this report on my status line conditionally, that is, only when there are errors in my code.

Although I can modify the string presented in my status bar when there are errors to report, I cannot set whitespaces, as I'm using line characters in fillchars. This does not seems to affect whitespaces set by set statusline+=\ , however, I don't know how to include this command inside a string produced by another function.

As such, is there any special invisible character that can be set inside of a string, that could be ignored by set fillchars?

function! StatusDiagnostic() abort
  let info = get(b:, 'coc_diagnostic_info', {})
  if empty(info) | return '' | endif
  let msgs = []
  if get(info, 'error', 0)
    call add(msgs,'['. 'E' . info['error']  . ']'. ' ')
  endif
  if get(info, 'warning', 0)
    call add(msgs, '[' . 'W ' . info['warning'] . ']'. ' ')
  endif
  return join(msgs, ' '). '' . get(g:, 'coc_status', '')
endfunction

set fillchars=stl:─,stlnc:─
set laststatus=2
set statusline=
set statusline+=%m
set statusline+=\ 
set statusline+=%t
set statusline+=\ 
set statusline+=
set statusline+=\
set statusline+=%{StatusDiagnostic()}
set statusline+=%=
set statusline+=\ 
set statusline+=
set statusline+=\
set statusline+=%l
set statusline+=:
set statusline+=%L
set statusline+=\ 
set statusline+=
set statusline+=\
set statusline+=%P

Here is my status line: statusline with - instead of whitespace If I've failed to be clear, I want to put a whitespace after the closing bracket in E1.

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  • 1
    I'm not sure I follow; maybe you just don't want to adjust fillchars? But you could try a non-breaking space (0xA0, I think)
    – D. Ben Knoble
    Jan 31, 2023 at 15:00
  • Also, welcome to Vi and Vim!
    – D. Ben Knoble
    Jan 31, 2023 at 15:00
  • Thank you for the welcome! A non-breaking space seems to be what I'm looking after. Any idea for how I should include that inside a string returned by the StatusDiagnostic() funcion?
    – Idervas
    Jan 31, 2023 at 15:32
  • Sure; change the spaces in your strings to the nbsp. For example, C-v xA0 should work to insert it. Or C-k NS.
    – D. Ben Knoble
    Jan 31, 2023 at 16:21
  • It worked! Thank you so much for your time!
    – Idervas
    Jan 31, 2023 at 16:33

1 Answer 1

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@Ben is right :-| the solution is:

function! StatusDiagnostic() abort
  let info = get(b:, 'coc_diagnostic_info', {})
  if empty(info) | return '' | endif
  let msgs = []
  if get(info, 'error', 0)
    call add(msgs,'['. 'E' . info['error']  . ']'. "\<char 0xA0>")
  endif
  if get(info, 'warning', 0)
    call add(msgs, '[' . 'W ' . info['warning'] . ']'. "\<char 0xA0>")
  endif
  return join(msgs, "\<char 0xA0>"). '' . get(g:, 'coc_status', '')
endfunction
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  • Thank you for your answer! However, although your suggestion works for whitespaces set by set statusline, they do not work inside of strings. I want to include a whitespace in the string returned by StatusDiagnostic(), that is ignored by fillchars.
    – Idervas
    Jan 31, 2023 at 15:17
  • Have you tried the second option with set &statusline="Hello World "? In my test it works even with fillchars set. Jan 31, 2023 at 15:20
  • Yes, all whitespaces inside any string are being affected by fillchars, the only exception being whitespaces set with "set statusline=\ ". I've included your exemple without the "&" before "statusline=", however, since including your line with this character was not recognized.
    – Idervas
    Jan 31, 2023 at 15:30
  • And what if you use the form with the leading & (set &statusline+=StatusDiagnostic())? Jan 31, 2023 at 15:49
  • 2
    :set &statusline+= is not valid. And let &statusline+=func() eliminates the OP's dynamic statusline behavior
    – D. Ben Knoble
    Jan 31, 2023 at 16:20

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