patch 9.0.0544: minor issues with setting a string option
Problem: Minor issues with setting a string option.
Solution: Adjust the code, add a test. (closes #11192)
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index a0ee53b..a890009 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -1343,4 +1343,18 @@
only!
endfunc
+" :set empty string for global 'keywordprg' falls back to ":help"
+func Test_keywordprg_empty()
+ let k = &keywordprg
+ set keywordprg=man
+ call assert_equal('man', &keywordprg)
+ set keywordprg=
+ call assert_equal(':help', &keywordprg)
+ set keywordprg=man
+ call assert_equal('man', &keywordprg)
+ call assert_equal("\n keywordprg=:help", execute('set kp= kp?'))
+ let &keywordprg = k
+endfunc
+
+
" vim: shiftwidth=2 sts=2 expandtab