Update runtime files.

runtime/indent/bash.vim

@@ -0,0 +1,18 @@
+" Vim indent file
+" Language:	bash
+" Maintainer:	Bram
+" Last Change:	2019 Sep 27
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+   finish
+endif
+
+" The actual indenting is in sh.vim and controlled by buffer-local variables.
+unlet! b:is_sh
+unlet! b:is_kornshell
+let b:is_bash = 1
+
+runtime! indent/sh.vim
+
+" vim: ts=8