commit 8f130eda4747e4a4d68353cdb650f359fd01469b
author Bram Moolenaar <Bram@vim.org> Wed Apr 10 22:15:19 2019 +0200
committer Bram Moolenaar <Bram@vim.org> Wed Apr 10 22:15:19 2019 +0200
tree 0c07f9b0d8203788f1929ad8383839020f1f41cb
parent 3fb01a53c685d8d7e7bd83c33500de80aed0d7c8

patch 8.1.1143: may pass weird strings to file name expansion

Problem:    May pass weird strings to file name expansion.
Solution:   Check for matching characters.  Disallow control characters.

src/testdir/test_spell.vim

diff --git a/src/testdir/test_spell.vim b/src/testdir/test_spell.vim
index 76ad12e..6bf43ac 100644
--- a/src/testdir/test_spell.vim
+++ b/src/testdir/test_spell.vim
@@ -149,6 +149,12 @@
   set nospell spelllang=en
   call assert_fails('spellinfo', 'E756:')
 
+  call assert_fails('set spelllang=foo/bar', 'E474:')
+  call assert_fails('set spelllang=foo\ bar', 'E474:')
+  call assert_fails("set spelllang=foo\\\nbar", 'E474:')
+  call assert_fails("set spelllang=foo\\\rbar", 'E474:')
+  call assert_fails("set spelllang=foo+bar", 'E474:')
+
   set enc& spell& spelllang&
   bwipe
 endfunc