Update runtime files
diff --git a/runtime/syntax/gnuplot.vim b/runtime/syntax/gnuplot.vim
index 7777cc9..9c98e67 100644
--- a/runtime/syntax/gnuplot.vim
+++ b/runtime/syntax/gnuplot.vim
@@ -3,7 +3,7 @@
" Maintainer: Josh Wainwright <wainwright DOT ja AT gmail DOT com>
" Last Maintainer: Andrew Rasmussen andyras@users.sourceforge.net
" Original Maintainer: John Hoelzel johnh51@users.sourceforge.net
-" Last Change: 2015-08-25
+" Last Change: 2020 May 12
" Filenames: *.gnu *.plt *.gpi *.gih *.gp *.gnuplot scripts: #!*gnuplot
" URL: http://www.vim.org/scripts/script.php?script_id=4873
" Original URL: http://johnh51.get.to/vim/syntax/gnuplot.vim
@@ -479,7 +479,7 @@
" ---- Macros ---- "
-syn region gnuplotMacro start="@" end=" "
+syn match gnuplotMacro "@[a-zA-Z0-9_]*"
" ---- Todos ---- "