* fix: directory incorrectly listed as object in S3 ListObjects
Regular directories (without MIME type) were only added to CommonPrefixes
when delimiter was exactly '/'. This caused directories to be silently
skipped for other delimiter values.
Changed the condition from 'delimiter == "/"' to 'delimiter != ""' to
ensure directories are correctly added to CommonPrefixes for any delimiter.
Fixes issue where directories like 'data/file.vhd' were being returned as
objects instead of prefixes in ListObjects responses.
* fix: complete the directory listing fix for all delimiters
Address reviewer feedback:
- Changed doListFilerEntries line 549 from 'delimiter != "/"' to 'delimiter == ""'
This ensures directories are yielded to the callback for ANY delimiter, not just "/"
- Parameterized test to verify fix works with multiple delimiters (/, _, :)
The previous fix only addressed line 260 but line 549 was still causing
recursion for non-"/" delimiters, preventing directories from being
added to CommonPrefixes.
* docs: update test comment to reflect multiple delimiters
Address reviewer feedback - clarify that the test verifies behavior
for any non-empty delimiter, not just '/'.
* docs: clarify test comment with delimiter examples
Add specific examples of delimiters ('/', '_', ':') to make it clear
that the test verifies behavior with multiple delimiter types.
* fix: revert line 549 to original logic, only line 260 needed changing
The fix for directories being listed as objects only required changing
line 260 from 'delimiter == "/"' to 'delimiter != ""'.
Line 549 should remain as 'delimiter != "/"' to allow recursion for
delimiters that don't exist in paths (e.g., delimiter=z for paths like
b/a/c). This is correct S3 behavior.
Updated test to only verify delimiter="/" since other delimiters should
recurse into directories to find actual files.
* docs: clarify test scope in directory listing test
f2373f9e8d