glob should show only directories when used with `*/`

[phcerdan]

The POSIX glob and python glob.glob make this distinction.
glob("/path/*") shows all the files and directories
glob("/path/*/") shows only directories

There was a bug in pathlib with the same issue: python/cpython#10349 . Fixed in Python 3.11

Related: #407

Also, s3fs.glob("/path/*") should show keys for folders ending with "/", and keys for files without ending "/", for consistency with aws docs.

[martindurant]

Agree, that glob("...*/") should only return keys ending with "/". These are not necessarily "folders" (any key name is valid in s3). The question of whether a path that corresponds to a common prefix (this is aws's nomenclature) should match with or without the "/" is tricky to answer and implement, since it can be used in both variants is different places; e.g., you would expect ls("bucket/path") and ls("bucket/path/") to give the same results.

s3fs.glob("/path/*") should show keys for folders ending with "/", and keys for files without ending "/", for consistency with aws docs.

Disagree with this: s3fs should show the actual names of the keys it finds. The link here is to the aws console, which has it's own ideas about folders over and above what the actual s3 service and API supports. If you want to know if an entry is a regular file, use detail=True.