1 files changed, 111 insertions, 0 deletions
diff --git a/mnv/runtime/ftplugin/html.mnv b/mnv/runtime/ftplugin/html.mnv
new file mode 100644
index 0000000000..1fe30d2690
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+++ b/mnv/runtime/ftplugin/html.mnv
@@ -0,0 +1,111 @@
+" MNV filetype plugin file
+" Language:		HTML
+" Maintainer:		Doug Kearns <dougkearns@gmail.com>
+" Previous Maintainer:	Dan Sharp
+" Last Change:		2025 Sep 12
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:save_cpo = &cpo
+set cpo-=C
+
+setlocal matchpairs+=<:>
+setlocal commentstring=<!--\ %s\ -->
+setlocal comments=s:<!--,m:\ \ \ \ ,e:-->
+
+if exists('b:undo_ftplugin')
+  " no whitespace before |, handle possible :unmap at end of current value
+  let b:undo_ftplugin ..= "| setlocal comments< commentstring< matchpairs<"
+else
+  let b:undo_ftplugin = "setlocal comments< commentstring< matchpairs<"
+endif
+
+if get(g:, "ft_html_autocomment", 0)
+  setlocal formatoptions-=t formatoptions+=croql
+  let b:undo_ftplugin ..= " | setlocal formatoptions<"
+endif
+
+if exists('&omnifunc')
+  setlocal omnifunc=htmlcomplete#CompleteTags
+  call htmlcomplete#DetectOmniFlavor()
+  let b:undo_ftplugin ..= " | setlocal omnifunc<"
+endif
+
+" HTML: thanks to Johannes Zellner and Benji Fisher.
+if exists("loaded_matchit") && !exists("b:match_words")
+  let b:match_ignorecase = 1
+  let b:match_words = '<!--:-->,' ..
+	\	      '<:>,' ..
+	\	      '<\@<=[ou]l\>[^>]*\%(>\|$\):<\@<=li\>:<\@<=/[ou]l>,' ..
+	\	      '<\@<=dl\>[^>]*\%(>\|$\):<\@<=d[td]\>:<\@<=/dl>,' ..
+	\	      '<\@<=\([^/!][^ \t>]*\)[^>]*\%(>\|$\):<\@<=/\1>'
+  let b:html_set_match_words = 1
+  let b:undo_ftplugin ..= " | unlet! b:match_ignorecase b:match_words b:html_set_match_words"
+endif
+
+" Change the :browse e filter to primarily show HTML-related files.
+if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter")
+  let  b:browsefilter = "HTML Files (*.html, *.htm)\t*.html;*.htm\n" ..
+	\		"JavaScript Files (*.js)\t*.js\n" ..
+	\		"Cascading StyleSheets (*.css)\t*.css\n"
+  if has("win32")
+    let b:browsefilter ..= "All Files (*.*)\t*\n"
+  else
+    let b:browsefilter ..= "All Files (*)\t*\n"
+  endif
+  let b:html_set_browsefilter = 1
+  let b:undo_ftplugin ..= " | unlet! b:browsefilter b:html_set_browsefilter"
+endif
+
+if has("folding") && get(g:, "html_expr_folding", 0)
+  function! HTMLTagFold() abort
+    if empty(get(b:, "foldsmap", {}))
+      if empty(get(b:, "current_syntax", ''))
+	return '0'
+      else
+	let b:foldsmap = htmlfold#MapBalancedTags()
+      endif
+    endif
+
+    return get(b:foldsmap, v:lnum, '=')
+  endfunction
+
+  setlocal foldexpr=HTMLTagFold()
+  setlocal foldmethod=expr
+  let b:undo_ftplugin ..= " | setlocal foldexpr< foldmethod<"
+
+  if !get(g:, "html_expr_folding_without_recomputation", 0)
+    augroup htmltagfold
+      autocmd! htmltagfold
+      autocmd TextChanged,InsertLeave <buffer> let b:foldsmap = {}
+    augroup END
+
+    " XXX: Keep ":autocmd" last in "b:undo_ftplugin" (see ":help :bar").
+    let b:undo_ftplugin ..= " | silent! autocmd! htmltagfold * <buffer>"
+  endif
+endif
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" See ":help mnv9-mix".
+if !has("mnv9script")
+  finish
+endif
+
+if exists("*g:HTMLTagFold")
+  def! g:HTMLTagFold(): string
+    if empty(get(b:, "foldsmap", {}))
+      if empty(get(b:, "current_syntax", ''))
+	return '0'
+      else
+	b:foldsmap = g:htmlfold#MapBalancedTags()
+      endif
+    endif
+
+    return get(b:foldsmap, v:lnum, '=')
+  enddef
+endif