Update runtime files

runtime/autoload/freebasic.vim

@@ -0,0 +1,41 @@
+" Vim filetype plugin file
+" Language:	FreeBASIC
+" Maintainer:	Doug Kearns <dougkearns@gmail.com>
+" Last Change:	2021 Mar 16
+
+" Dialects can be one of fb, qb, fblite, or deprecated
+" Precedence is forcelang > #lang > lang
+function! freebasic#GetDialect() abort
+  if exists("g:freebasic_forcelang")
+    return g:freebasic_forcelang
+  endif
+
+  if exists("g:freebasic_lang")
+    let dialect = g:freebasic_lang
+  else
+    let dialect = "fb"
+  endif
+
+  " override with #lang directive or metacommand
+
+  let skip = "has('syntax_items') && synIDattr(synID(line('.'), col('.'), 1), 'name') =~ 'Comment$'"
+  let pat = '\c^\s*\%(#\s*lang\s\+\|''\s*$lang\s*:\s*\)"\([^"]*\)"'
+
+  let save_cursor = getcurpos()
+  call cursor(1, 1)
+  let lnum = search(pat, 'n', '', '', skip)
+  call setpos('.', save_cursor)
+
+  if lnum
+    let word = matchlist(getline(lnum), pat)[1]
+    if word =~? '\%(fb\|deprecated\|fblite\|qb\)'
+      let dialect = word
+    else
+      echomsg "freebasic#GetDialect: Invalid lang, found '" .. word .. "' at line " .. lnum .. " " .. getline(lnum)
+    endif
+  endif
+
+  return dialect
+endfunction
+
+" vim: nowrap sw=2 sts=2 ts=8 noet fdm=marker: