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" Haredoc plugin -- Hare documentation in vim
" Maintainer: Byron Torres <b@torresjrjr.com>
" Maintainer: Polesznyák Márk <contact@pml68.dev>
" Last Updated: 2025-12-06
" License: Vim License
command -nargs=? Haredoc :call Haredoc(<q-args>)
function Haredoc(symbol)
let symbol = a:symbol
let popup = symbol == '.'
let goto = symbol == ';'
if (symbol == '.' || symbol == ',' || symbol == ';')
let oldiskeyword = &iskeyword
setlocal iskeyword+=:
let symbol = expand('<cword>')
let &iskeyword = oldiskeyword
" resolve possibly non-complete symbols (chrono::moment)
if match(symbol, "::") != -1 && &buftype == ''
let [submodule, ident] = split(symbol, "::")[-2:-1]
" try joining symbol with a use statement.
" example: 'use time::chrono' -> 'time::chrono::moment'
let use = getline(search('^use *.*::'..submodule, 'bnw'))
if use != ''
let symbol = substitute(
\ use,
\ '\(use *\|;\)',
\ '',
\ 'g'
\ )..'::'..ident
endif
endif
endif
if goto
let line = search('^fn '..symbol, 'bnw')
if line != 0
execute line
else
let haredoc_output = system('haredoc -N '..symbol)
if match(haredoc_output, ":") != 1
let [filepath, line] = split(haredoc_output, ":")[-2:-1]
execute 'edit +'..line..' '..filepath
else
execute "echo '"..haredoc_output.."'"
endif
endif
elseif popup && has('popupwin') && has('terminal')
let buf = term_start(
\ [
\ 'sh', '-c',
\ "haredoc -Ftty '"..symbol.."' | LESS= less -RKX",
\ ],
\ #{
\ term_name: '[haredoc] '..symbol,
\ hidden: 1,
\ term_finish: 'close',
\ },
\ )
call setbufvar(buf, "&bufhidden", 'wipe')
let minheight = 1 + system(
\ "haredoc -Ftty '"..symbol.."' 2>&1 | wc -l"
\ )
let winid = popup_atcursor(
\ buf,
\ #{
\ title: "[haredoc] "..symbol,
\ col: 'cursor-'..virtcol('.'),
\ minwidth: 84,
\ minheight: minheight,
\ fixed: v:false,
\ wrap: v:false,
\ border: [1, 1, 1, 1],
\ },
\ )
elseif has('terminal')
call term_start(
\ [
\ 'sh', '-c',
\ "haredoc -Ftty '"..symbol.."' | less -RKX",
\ ],
\ #{
\ term_name: '[haredoc] '..symbol,
\ },
\ )
set nonumber filetype=hare bufhidden=wipe
nnoremap <buffer> q :close<CR>
nnoremap <buffer> <nowait> u <C-U>
nnoremap <buffer> <nowait> d <C-D>
elseif has('nvim')
let buf = nvim_create_buf(0, 1)
let win = nvim_open_win(buf, 1, #{
\ relative: 'cursor',
\ width: 80,
\ height: 20,
\ bufpos: [0, 0],
\ })
hi NormalFloat ctermbg=Black
execute 'terminal haredoc '..symbol
tnoremap <buffer> q <C-\><C-N>
nnoremap <buffer> q :close<CR>
nnoremap <buffer> <nowait> u <C-U>
nnoremap <buffer> <nowait> d <C-D>
startinsert
else
execute '!haredoc '..symbol
endif
endfunction
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