patch 8.2.2856: get readonly error for device that can't be written to
Problem: Get readonly error for device that can't be written to.
Solution: Check for being able to write first. (closes #8205)
diff --git a/src/testdir/test_writefile.vim b/src/testdir/test_writefile.vim
index 8470d4e..75dda81 100644
--- a/src/testdir/test_writefile.vim
+++ b/src/testdir/test_writefile.vim
@@ -285,7 +285,7 @@
\ && getftype('/dev/loop0') == 'bdev' && !IsRoot()
new
edit /dev/loop0
- call assert_fails('write', 'E505: ')
+ call assert_fails('write', 'E503: ')
call assert_fails('write!', 'E503: ')
close!
endif