patch 9.1.0235: filetype: supertux files are not recognized

Problem:  filetype: supertux files are not recognized
Solution: Supertux uses lisp to store hotkeys in config and game stage information,
          so add a pattern for supertux files.
          (Wu, Zhenyu)

Reference: https://github.com/SuperTux/supertux/wiki/S-Expression

closes: #14356

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 0937fba..67dd9a4 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -1203,9 +1203,9 @@
 " Lisp (*.el = ELisp, *.cl = Common Lisp)
 " *.jl was removed, it's also used for Julia, better skip than guess wrong.
 if has("fname_case")
-  au BufNewFile,BufRead *.lsp,*.lisp,*.asd,*.el,*.cl,*.L,.emacs,.sawfishrc setf lisp
+  au BufNewFile,BufRead *.lsp,*.lisp,*.asd,*.el,*.cl,*.L,.emacs,.sawfishrc,*.stsg,*/supertux2/config setf lisp
 else
-  au BufNewFile,BufRead *.lsp,*.lisp,*.asd,*.el,*.cl,.emacs,.sawfishrc setf lisp
+  au BufNewFile,BufRead *.lsp,*.lisp,*.asd,*.el,*.cl,.emacs,.sawfishrc,*.stsg,*/supertux2/config setf lisp
 endif
 
 " SBCL implementation of Common Lisp
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 881fab2..6a891a4 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -383,7 +383,7 @@
     limits: ['/etc/limits', '/etc/anylimits.conf', '/etc/anylimits.d/file.conf', '/etc/limits.conf', '/etc/limits.d/file.conf', '/etc/some-limits.conf', '/etc/some-limits.d/file.conf', 'any/etc/limits', 'any/etc/limits.conf', 'any/etc/limits.d/file.conf', 'any/etc/some-limits.conf', 'any/etc/some-limits.d/file.conf'],
     liquidsoap: ['file.liq'],
     liquid: ['file.liquid'],
-    lisp: ['file.lsp', 'file.lisp', 'file.asd', 'file.el', 'file.cl', '.emacs', '.sawfishrc', 'sbclrc', '.sbclrc'],
+    lisp: ['file.lsp', 'file.lisp', 'file.asd', 'file.el', 'file.cl', '.emacs', '.sawfishrc', 'sbclrc', '.sbclrc', 'file.stsg', 'any/local/share/supertux2/config'],
     lite: ['file.lite', 'file.lt'],
     litestep: ['/LiteStep/any/file.rc', 'any/LiteStep/any/file.rc'],
     logcheck: ['/etc/logcheck/file.d-some/file', '/etc/logcheck/file.d/file', 'any/etc/logcheck/file.d-some/file', 'any/etc/logcheck/file.d/file'],
diff --git a/src/version.c b/src/version.c
index a5395e9..439c4e7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    235,
+/**/
     234,
 /**/
     233,