patch 8.0.0056
Problem: When setting 'filetype' there is no check for a valid name.
Solution: Only allow valid characters in 'filetype', 'syntax' and 'keymap'.
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index 21dd7fe..dee435c 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -48,3 +48,52 @@
endif
endfunc
+func Test_filetype_valid()
+ set ft=valid_name
+ call assert_equal("valid_name", &filetype)
+ set ft=valid-name
+ call assert_equal("valid-name", &filetype)
+
+ call assert_fails(":set ft=wrong;name", "E474:")
+ call assert_fails(":set ft=wrong\\\\name", "E474:")
+ call assert_fails(":set ft=wrong\\|name", "E474:")
+ call assert_fails(":set ft=wrong/name", "E474:")
+ call assert_fails(":set ft=wrong\\\nname", "E474:")
+ call assert_equal("valid-name", &filetype)
+
+ exe "set ft=trunc\x00name"
+ call assert_equal("trunc", &filetype)
+endfunc
+
+func Test_syntax_valid()
+ set syn=valid_name
+ call assert_equal("valid_name", &syntax)
+ set syn=valid-name
+ call assert_equal("valid-name", &syntax)
+
+ call assert_fails(":set syn=wrong;name", "E474:")
+ call assert_fails(":set syn=wrong\\\\name", "E474:")
+ call assert_fails(":set syn=wrong\\|name", "E474:")
+ call assert_fails(":set syn=wrong/name", "E474:")
+ call assert_fails(":set syn=wrong\\\nname", "E474:")
+ call assert_equal("valid-name", &syntax)
+
+ exe "set syn=trunc\x00name"
+ call assert_equal("trunc", &syntax)
+endfunc
+
+func Test_keymap_valid()
+ call assert_fails(":set kmp=valid_name", "E544:")
+ call assert_fails(":set kmp=valid_name", "valid_name")
+ call assert_fails(":set kmp=valid-name", "E544:")
+ call assert_fails(":set kmp=valid-name", "valid-name")
+
+ call assert_fails(":set kmp=wrong;name", "E474:")
+ call assert_fails(":set kmp=wrong\\\\name", "E474:")
+ call assert_fails(":set kmp=wrong\\|name", "E474:")
+ call assert_fails(":set kmp=wrong/name", "E474:")
+ call assert_fails(":set kmp=wrong\\\nname", "E474:")
+
+ call assert_fails(":set kmp=trunc\x00name", "E544:")
+ call assert_fails(":set kmp=trunc\x00name", "trunc")
+endfunc