From c12e4eecbb26cedca96e0810d3501043356eebaa Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Thu, 22 Jun 2023 12:18:57 +0100
Subject: patch 9.0.1643: filetype detection fails if file name ends in many
 '~'

Problem:    Filetype detection fails if file name ends in many '~'.
Solution:   Strip multiple '~' at the same time. (closes #12553)
---
 src/testdir/test_filetype.vim | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/testdir/test_filetype.vim')

diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 41b9106136..9c1b11d2a0 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -1,5 +1,16 @@
 " Test :setfiletype
 
+func Test_backup_strip()
+  filetype on
+  let fname = 'Xdetect.js~~~~~~~~~~~'
+  call writefile(['one', 'two', 'three'], fname, 'D')
+  exe 'edit ' .. fname
+  call assert_equal('javascript', &filetype)
+
+  bwipe!
+  filetype off
+endfunc
+
 func Test_detection()
   filetype on
   augroup filetypedetect
-- 
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