lent support makes tryGet returns the wrong value

[2-towns]

I am trying to update Codex and its sub-dependencies to Nim version 2.x (currently testing with 2.0.12), and I found an error with nim-results that has lent support when running the tests on the nim-datastore repository. The tryGet method returns the wrong value. Here is the part of the test that is failing:

    let
      key = Key.init("/a:b/c/d:e").tryGet()
    echo key.parent
    # success(/a:b/c)
    echo key.parent.tryGet()
    # /a:b/c
    echo key.parent.?parent
    # success(/a:b)
    echo key.parent.?parent.tryGet()
    # /a:a  
    # Expected: /a:b

It works with the previous before the lent support (commit hash bf8a958).
I tried to look at the code and found something that may be related:

# TODO https://github.com/nim-lang/Nim/issues/22216

The tests output are:

==========
  /home/share/arnaud/Work/codex/nim-datastore/tests/testall 'Key::key parent'
----------
    /home/share/arnaud/Work/codex/nim-datastore/tests/datastore/testkey.nim(249, 34): Check failed: key.parent .? parent.tryGet() == Key.init("a:b").tryGet()
    key.parent .? parent.tryGet() was /
    Key.init("a:b").tryGet() was /a:b

  [FAILED ] (  0.00s) key parent

========
  /home/share/arnaud/Work/codex/nim-datastore/tests/testall 'Key::key path'
--------
    /home/share/arnaud/Work/codex/nim-datastore/tests/datastore/testkey.nim(258, 30): Check failed: key.parent .? path.tryGet == Key.init("a:b/c").tryGet()
    key.parent .? path.tryGet was //
    Key.init("a:b/c").tryGet() was /a:b/c
    /home/share/arnaud/Work/codex/nim-datastore/tests/datastore/testkey.nim(260, 41): Check failed: Key.init("a:b/c:d") .? path.tryGet() == Key.init("a:b/c").tryGet()
    Key.init("a:b/c:d") .? path.tryGet() was //
    Key.init("a:b/c").tryGet() was /a:b/c
    /home/share/arnaud/Work/codex/nim-datastore/tests/datastore/testkey.nim(261, 43): Check failed: Key.init("a:b/c/d:e") .? path.tryGet() == Key.init("a:b/c/d").tryGet()
    Key.init("a:b/c/d:e") .? path.tryGet() was ///
    Key.init("a:b/c/d").tryGet() was /a:b/c/d

  [FAILED ] (  0.00s) key path

The failing tests are located at https://github.com/codex-storage/nim-datastore/blob/b3d4bd40fc4e45a76aa4e3b6d9aa3a2d064fc6b1/tests/datastore/testkey.nim#L233 and https://github.com/codex-storage/nim-datastore/blob/b3d4bd40fc4e45a76aa4e3b6d9aa3a2d064fc6b1/tests/datastore/testkey.nim#L256.

[arnetheduck]

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