WowAce

Elephant caused an error when loading:

1x Elephant\Initialize.lua:49: bad argument #1 to 'sub' (string expected, got nil)
[C]: in function `sub'
Elephant\Initialize.lua:49: in function <Elephant\Initialize.lua:45>
Elephant\Initialize.lua:90: in function <Elephant\Initialize.lua:65>
(tail call): ?
[C]: ?
[string "safecall Dispatcher[1]"]:9: in function <[string "safecall Dispatcher[1]"]:5>
(tail call): ?
...xternal\Wildpants\libs\AceAddon-3.0\AceAddon-3.0-12.lua:558: in function `EnableAddon'
...xternal\Wildpants\libs\AceAddon-3.0\AceAddon-3.0-12.lua:651: in function <...xternal\Wildpants\libs\AceAddon-3.0\AceAddon-3.0.lua:636>
[C]: in function `LoadAddOn'
FrameXML\UIParent.lua:353: in function `UIParentLoadAddOn'
FrameXML\UIParent.lua:424: in function `TimeManager_LoadUI'
FrameXML\UIParent.lua:693: in function <FrameXML\UIParent.lua:658>

I am not sure how shall I submit an PR to fix the issue, thus I put the patch here:

diff --git a/Core.lua b/Core.lua
index e07a842..e3151cf 100644
--- a/Core.lua
+++ b/Core.lua
@@ -1,6 +1,7 @@
 --[[ Creating AddOn ]]
 Elephant = LibStub("AceAddon-3.0"):NewAddon("Elephant", "AceConsole-3.0", "AceEvent-3.0")
 Elephant.L = LibStub("AceLocale-3.0"):GetLocale("Elephant")
+Elephant.IsClassic = (_G.WOW_PROJECT_ID == _G.WOW_PROJECT_CLASSIC)
 
 --[[ Bindings ]]
 BINDING_HEADER_ELEPHANT = "Elephant"
diff --git a/Initialize.lua b/Initialize.lua
index d763cc8..f413d69 100644
--- a/Initialize.lua
+++ b/Initialize.lua
@@ -86,10 +86,12 @@ function Elephant:OnEnable()
     ElephantFrameRaidTabButton,
     Elephant.L['chatnames']['raid'],
     'RAID')
+  if not Elephant.IsClassic then
   SetTabButtonProperties(
     ElephantFrameInstanceTabButton,
     Elephant.L['chatnames']['instance'],
     'INSTANCE_CHAT')
+  end
   SetTabButtonProperties(
     ElephantFrameSayTabButton,
     Elephant.L['chatnames']['say'],

Tried it in WoW Classic and works pretty well, thank you.

PS: If you dislike the name "INSTANCE" in the tooltip of the chat bubble in Elephant, just edit the ["instance"] value in the

corresponding Locale-LUA of your language.

L['chatnames'] = {
...
['instance'] = INSTANCE
}

Will update in version 1.13.3d-classic+