File vim-7.3-sh_is_bash.patch of Package vim

Index: vim-8.1.1467/runtime/syntax/sh.vim
===================================================================
--- vim-8.1.1467.orig/runtime/syntax/sh.vim
+++ vim-8.1.1467/runtime/syntax/sh.vim
@@ -64,6 +64,13 @@ if !exists("b:is_kornshell") && !exists(
   endif
 endif
 
+" Neither is_kornshell nor is_bash was explicitly set, and
+" /bin/sh is a bash on SUSE LINUX.
+if exists("b:is_sh")
+  let b:is_bash= 1
+  unlet b:is_sh
+endif
+
 " set up default g:sh_fold_enabled {{{1
 " ================================
 if !exists("g:sh_fold_enabled")