Using a function as a list in a contain effect doesn't work

[AzonFR]

Description

When using a function as a list in a contain effect it doesn't work
But we can use if whitelist() where [input = {_p}'s name] is set:

Steps to Reproduce

function whitelist() :: texts:
  return "Azon_FR", "Azon_DC1", "Azon_DC2" and "Azon_DC3"

function connect(p: player, s: text):
  loop whitelist():
    broadcast "%loop-value% %{_p}'s name%"
    loop-value = {_p}'s name
    broadcast "&atrue"
  if whitelist() contain {_p}'s name:
    broadcast "&acontain"
  else:
    broadcast "&cdoesn't contain"

Expected Behavior

It should send "contain" because whitelist() contain my name

Errors / Screenshots

Server Information

• Server version/platform: Spigot 1.8.8
• Skript version: 2.5.3 fork for 1.8

[bluelhf]

The issue tracker supports only 1.9.4 and above

[Matocolotoe]

The issue tracker supports only 1.9.4 and above

This issue occurs in 1.9+ though :)

function whitelist() :: texts:
  return "Giovanni75", "Azon_DC1", "Azon_DC2" and "Azon_DC3"

function connect(p: player, s: text):
  loop whitelist():
    broadcast "%loop-value% %{_p}'s name%"
    loop-value = {_p}'s name
    broadcast "&atrue"
  if whitelist() contain {_p}'s name:
    broadcast "&acontain"
  else:
    broadcast "&cdoesn't contain"

[TPGamesNL]

This happens because CondContains handles string differently from other objects, examples:
("abc" and "def") contains "abc" returns false, because abc does contain the text abc, but def doesn't.
("abc" or "def") contains "abc" returns true, because now or is used instead of and.
You can use the alternative syntax [the] list [of] %objects% contain[s] %objects% to always use object list comparisons.

The reason this behaviour isn't noticed that much, is because it doesn't work properly for list variables, these are checked as a list of objects.
Related: #2439, #3014