Conflicts with ST autocomplete popup when using tab as completion key

[GorgeRonde]

Pre-requisites :

• to have auto_complete_commit_on_tab set to true in ST user settings (i think it is set to false by default).
• using the tab key as this plugin autocomplete key (copying bindings found in Tabs.sublime-keymap).

Steps to reproduce the issue:

• write in a new, blank file

afunctionname
anotherfunctionname
athirdfunctionname

• type a one line under athirdfunctionname, then wait for ST native autocomplete box to pop up.
• imagine we want to autocomplete a to afunctionname. Let's select afunctionname in the popup by highlighting it using the up/down arrow keys. Then press tab.

Expected result : pressing tab should commit afunctionname (at least if we stick to the auto_complete_on_tab logic).

Observed result : athirdfunctionname gets commited instead, since it is closer to the cursor.

Workaround : edit Tabs.sublime-keymap/your user keymap to

{
    "keys": ["tab"],
    "command": "alternative_autocomplete",
    "args": {"default": "\t"},
    "context": [
      { "key": "num_selections", "operator": "equal", "operand": 1 },
      { "key": "auto_complete_visible", "operator": "equal", "operand": false}
    ]
},