1 files changed, 89 insertions, 0 deletions
diff --git a/mnv/runtime/ftplugin/racket.mnv b/mnv/runtime/ftplugin/racket.mnv
new file mode 100644
index 0000000000..e46b28b87b
--- /dev/null
+++ b/mnv/runtime/ftplugin/racket.mnv
@@ -0,0 +1,89 @@
+" MNV 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/mnv-racket
+" Last Change:          2025 Aug 09
+" 2026 Mar 31 by MNV project: use shellescape for the K mapping
+" 2026 Apr 01 by MNV project: make K mapping more robust for shell injection
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&mnv
+
+" quick hack to allow adding values
+setlocal iskeyword=@,!,#-',*-:,<-Z,a-z,~,_,94
+
+setlocal shiftwidth=2 softtabstop=2
+
+" Enable auto begin new comment line when continuing from an old comment line
+setlocal comments=:;;;;,:;;;,:;;,:;
+setlocal formatoptions+=r
+
+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< shiftwidth< softtabstop< 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 mnv 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, v:true)
+    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 -- ". string(shellescape(@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"
+  if has("win32")
+    let b:browsefilter .= "All Files (*.*)\t*\n"
+  else
+    let b:browsefilter .= "All Files (*)\t*\n"
+  endif
+  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