How to use and customize eleline without forking the repo?

[renkam]

Is there a way to define some magic variable like let g:eleline_custom_status_func = "MyStatusLine" or something similar?

[rockyzhang24]

I think the best way to customize eleline is to fork it and tweak it. The code is very straightforward and clear.

For example, if you want to add an item on the statusline, you just need a few steps:

1. Define a function say ElelineItem() that returns the contents you want to show on the statusline

function! ElelineItem() abort
  ...
  return "abc"
endfunction

2. Colorize it by calling s:def('ElelineItem') in s:StatusLine().

function! s:StatusLine() abort
  ...
  let l:item = s:def('ElelineItem')
  ...
endfunction

3. Finally, insert it to the return

function! s:StatusLine() abort
  ...
  let l:item = s:def('ElelineItem')
  ...
  return l:prefix . l:tot . '%<' . l:fsize . l:common . l:item
        \ .'%='.l:m_r_f.l:pos.l:enc.l:ff.l:pct
endfunction

You can also refer to my customization here if you want. I attached the effect of my customization below.

Hope this is helpful.