functests: Replace execute with either command or feed_command

Hope this will make people using feed_command less likely: this hides bugs.
Already found at least two:

1. msgpackparse() will show internal error: hash_add() in case of duplicate
   keys, though it will still work correctly. Currently silenced.
2. ttimeoutlen was spelled incorrectly, resulting in option not being set when
   expected. Test was still functioning somehow though. Currently fixed.

1 files changed, 7 insertions, 7 deletions

diff --git a/test/functional/legacy/join_spec.lua b/test/functional/legacy/join_spec.lua
index 3c4da8119c..d683d25eb0 100644
--- a/test/functional/legacy/join_spec.lua
+++ b/test/functional/legacy/join_spec.lua
@@ -2,19 +2,19 @@
 
 local helpers = require('test.functional.helpers')(after_each)
 local clear, eq = helpers.clear, helpers.eq
-local eval, execute = helpers.eval, helpers.execute
+local eval, command = helpers.eval, helpers.command
 
 describe('joining lines', function()
   before_each(clear)
 
   it('is working', function()
-    execute('new')
-    execute([[call setline(1, ['one', 'two', 'three', 'four'])]])
-    execute('normal J')
+    command('new')
+    command([[call setline(1, ['one', 'two', 'three', 'four'])]])
+    command('normal J')
     eq('one two', eval('getline(1)'))
-    execute('%del')
-    execute([[call setline(1, ['one', 'two', 'three', 'four'])]])
-    execute('normal 10J')
+    command('%del')
+    command([[call setline(1, ['one', 'two', 'three', 'four'])]])
+    command('normal 10J')
     eq('one two three four', eval('getline(1)'))
   end)
 end)