Current node is handled inconsistently when cursor is before a delimiter

[llakala]

Current behavior

Case 1

Given a file with these contents (cursor marked with |:

Demo |_file_

This is parsed as:

(source_file ; [0, 0] - [1, 0]
  (text) ; [0, 0] - [0, 4]
  (emph ; [0, 5] - [0, 11]
    "_" ; [0, 5] - [0, 6]
    (text) ; [0, 6] - [0, 10]
    "_")) ; [0, 10] - [0, 11]

The current node here is marked as the first anonymous _. This behavior is identical for other node types - $$, <>, **, etc.

Case 2

If the file only contains some node:

|#{}

This is parsed as:

(source_file ; [0, 0] - [1, 0]
  (code ; [0, 0] - [0, 3]
    "#" ; [0, 0] - [0, 1]
    (block ; [0, 1] - [0, 3]
      "{" ; [0, 1] - [0, 2]
      "}") ; [0, 2] - [0, 3]
    "end")) ; [0, 3] - [0, 3]

The current node here is actually source_file - before code and the anonymous #.

Expected behavior

I hit this because I was writing some query logic, and expected that if my cursor was before a delimiter starting a node, it wouldn't count as being within that node. For this reason, I think the logic should be adapted to consistently match case two. However, I can work around this if need be, so I'd be happy with any form of consistency.