fernrc.vim

" Author        : Jan Claussen
" Created       : 10/03/2023
" License       : MIT " Description   :
"

let g:fern#renderer = "nerdfont"

nnoremap <silent> <C-n> :Fern . -drawer -toggle<CR>

if has_key(plugs, 'glyph-palette.vim')
augroup my-glyph-palette
	autocmd! *
	autocmd FileType fern call glyph_palette#apply()
	autocmd FileType nerdtree,startify call glyph_palette#apply()
augroup END
endif

" Disable line numbers
augroup FernGroup
	autocmd! *
	autocmd FileType fern setlocal nornu | setlocal nonu
	autocmd FileType fern call s:init_fern()
augroup END

function! s:init_fern() abort
	nnoremap <buffer> <LeftRelease> <Plug>(fern-action-open-or-expand)
	nnoremap <buffer> <leader>l <Plug>(fern-action-git-unstage)
	nnoremap <buffer> <leader>h <Plug>(fern-action-git-stage)
	nnoremap <buffer> s <Plug>(fern-action-open:split)
	nnoremap <buffer> v <Plug>(fern-action-open:side)
endfunction

function UpdateIfTerm()
    const bufnr = str2nr(expand('<abuf>'))
    if getbufvar(bufnr, '&buftype') != 'terminal'
        return
    endif
	exec 'FernDo e -drawer -stay'
endfunction

" Update the fern buffer under a set of conditions
autocmd BufWritePost * ++nested :FernDo e -drawer -stay
if has_key(plugs, 'vim-fugitive')
	autocmd User FugitiveCommit ++nested :FernDo e -drawer -stay
endif
augroup FernUpdateGroup
	autocmd!
	autocmd BufWipeOut * ++nested call UpdateIfTerm()
augroup END

if has_key(plugs, 'fern-git-status.vim')
" Improve drawer performance u
let g:fern_git_status#disable_ignored = 1
" let g:fern_git_status#disable_untracked = 1
" let g:fern_git_status#disable_submodules = 1
" let g:fern_git_status#disable_directories = 1
endif

let hide_dirs  = '^\%(\node_modules\)$'  " here you write the dir names
let hide_files = '\%(\.o$\|\.mod$\|\.d$\)\+'    " here you write the file names

let g:fern#default_exclude = hide_dirs . '\|' . hide_files  " here you exclude them