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" Vim filetype plugin
" Language: Racket
" Maintainer: D. Ben Knoble <ben.knoble+github@gmail.com>
" Previous Maintainer: Will Langstroth <will@langstroth.com>
" URL: https://github.com/benknoble/vim-racket
" Last Change: 2022 Aug 29
if exists("b:did_ftplugin")
finish
endif
let b:did_ftplugin = 1
let s:cpo_save = &cpo
set cpo&vim
" quick hack to allow adding values
setlocal iskeyword=@,!,#-',*-:,<-Z,a-z,~,_,94
" Enable auto begin new comment line when continuing from an old comment line
setlocal comments=:;;;;,:;;;,:;;,:;
setlocal formatoptions+=r
"setlocal commentstring=;;%s
setlocal commentstring=#\|\ %s\ \|#
setlocal formatprg=raco\ fmt
" Undo our settings when the filetype changes away from Racket
" (this should be amended if settings/mappings are added above!)
let b:undo_ftplugin =
\ "setlocal iskeyword< lispwords< lisp< comments< formatoptions< formatprg<"
\. " | setlocal commentstring<"
if !exists("no_plugin_maps") && !exists("no_racket_maps")
" Simply setting keywordprg like this works:
" setlocal keywordprg=raco\ docs
" but then vim says:
" "press ENTER or type a command to continue"
" We avoid the annoyance of having to hit enter by remapping K directly.
function s:RacketDoc(word) abort
execute 'silent !raco docs --' shellescape(a:word)
redraw!
endfunction
nnoremap <buffer> <Plug>RacketDoc :call <SID>RacketDoc(expand('<cword>'))<CR>
nmap <buffer> K <Plug>RacketDoc
" For the visual mode K mapping, it's slightly more convoluted to get the
" selected text:
function! s:Racket_visual_doc()
try
let l:old_a = @a
normal! gv"ay
call system("raco docs '". @a . "'")
redraw!
return @a
finally
let @a = l:old_a
endtry
endfunction
xnoremap <buffer> <Plug>RacketDoc :call <SID>Racket_visual_doc()<cr>
xmap <buffer> K <Plug>RacketDoc
let b:undo_ftplugin .=
\ " | silent! execute 'nunmap <buffer> K'"
\. " | silent! execute 'xunmap <buffer> K'"
endif
if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
let b:browsefilter =
\ "Racket Source Files (*.rkt *.rktl)\t*.rkt;*.rktl\n"
\. "All Files (*.*)\t*.*\n"
let b:undo_ftplugin .= " | unlet! b:browsefilter"
endif
if exists("loaded_matchit") && !exists("b:match_words")
let b:match_words = '#|:|#'
let b:undo_ftplugin .= " | unlet! b:match_words"
endif
let &cpo = s:cpo_save
unlet s:cpo_save