Update runtime files.
diff --git a/runtime/syntax/maxima.vim b/runtime/syntax/maxima.vim
index ca982d7..27dcc18 100644
--- a/runtime/syntax/maxima.vim
+++ b/runtime/syntax/maxima.vim
@@ -227,7 +227,7 @@
" Comments:
" maxima supports /* ... */ (like C)
syn keyword maximaTodo contained TODO Todo DEBUG
-syn region maximaCommentBlock start="/\*" end="\*/" contains=maximaString,maximaTodo
+syn region maximaCommentBlock start="/\*" end="\*/" contains=maximaString,maximaTodo,maximaCommentBlock
" synchronizing
syn sync match maximaSyncComment grouphere maximaCommentBlock "/*"