Update runtime files
diff --git a/runtime/ftplugin/dosbatch.vim b/runtime/ftplugin/dosbatch.vim
index 070bdc4..0c5cde2 100644
--- a/runtime/ftplugin/dosbatch.vim
+++ b/runtime/ftplugin/dosbatch.vim
@@ -1,7 +1,7 @@
" Vim filetype plugin file
" Language: MS-DOS .bat files
" Maintainer: Mike Williams <mrw@eandem.co.uk>
-" Last Change: 14th April 2019
+" Last Change: 7th May 2020
" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
@@ -19,12 +19,21 @@
setlocal commentstring=::\ %s
setlocal formatoptions-=t formatoptions+=rol
+" Lookup DOS keywords using Windows command help.
+if executable('help.exe')
+ if has('terminal')
+ setlocal keywordprg=:term\ help.exe
+ else
+ setlocal keywordprg=help.exe
+ endif
+endif
+
" Define patterns for the browse file filter
if has("gui_win32") && !exists("b:browsefilter")
let b:browsefilter = "DOS Batch Files (*.bat, *.cmd)\t*.bat;*.cmd\nAll Files (*.*)\t*.*\n"
endif
-let b:undo_ftplugin = "setlocal comments< formatoptions<"
+let b:undo_ftplugin = "setlocal comments< formatoptions< keywordprg<"
\ . "| unlet! b:browsefiler"
let &cpo = s:cpo_save