Update runtime files
diff --git a/runtime/indent/vim.vim b/runtime/indent/vim.vim
index 5c02264..ca1e472 100644
--- a/runtime/indent/vim.vim
+++ b/runtime/indent/vim.vim
@@ -1,7 +1,7 @@
" Vim indent file
" Language: Vim script
" Maintainer: Bram Moolenaar <Bram@vim.org>
-" Last Change: 2021 Feb 18
+" Last Change: 2021 Apr 18
" Only load this indent file when no other was loaded.
if exists("b:did_indent")
@@ -71,7 +71,8 @@
" End of heredoc: use indent of matching start line
let lnum = v:lnum - 1
while lnum > 0
- if synIDattr(synID(lnum, 1, 1), "name") !~ 'vimLetHereDoc'
+ let attr = synIDattr(synID(lnum, 1, 1), "name")
+ if attr != '' && attr !~ 'vimLetHereDoc'
return indent(lnum)
endif
let lnum -= 1