From: nobu@ruby-lang.org
To: ruby-core@ruby-lang.org
Subject: [ruby-core:100530] [Ruby master Bug#17283] Why does Dir.glob's ** match files in current directory?
Date: Sun, 25 Oct 2020 13:14:57 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-88154.20201025131456.45555@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-17283.20201024195755.45555@ruby-lang.org
Issue #17283 has been updated by nobu (Nobuyoshi Nakada).
Eregon (Benoit Daloze) wrote in #note-2:
> Interestingly this behavior differs between Bash and Zsh:
Bash **doesn't** support `**`, and it just equals `*`.
----------------------------------------
Bug #17283: Why does Dir.glob's ** match files in current directory?
https://bugs.ruby-lang.org/issues/17283#change-88154
* Author: Yanir (Yanir Name)
* Status: Closed
* Priority: Normal
* ruby -v: ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x64-mingw32]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
----------------------------------------
If my current directory has 1 file and 1 dir, and I use `Dir.glob("**/*")` or even just `**`, both the dir and the file would be matched.
I would expect that only the dir will be matched, since the glob starts with `**`, which wants to match a directory.
This is a behavior that's different from bash. In bash only the directory would be matched.
Ruby:
```
Directory of C:\Users\User\z
10/24/2020 10:42 PM <DIR> .
10/24/2020 10:42 PM <DIR> ..
10/24/2020 10:42 PM <DIR> dir
10/24/2020 10:41 PM 4 file
1 File(s) 4 bytes
3 Dir(s) 256,993,574,912 bytes free
C:\Users\User\z>irb
irb(main):001:0> Dir.glob("**/*")
=> ["dir", "file"]
irb(main):002:0> Dir.glob("**")
=> ["dir", "file"]
```
In Bash:
```
root@debian:~/rubytest# ls -lah
total 12K
drwxr-xr-x 3 root root 4.0K Oct 23 17:44 .
drwx------ 19 root root 4.0K Oct 23 17:43 ..
drwxr-xr-x 2 root root 4.0K Oct 23 17:44 dir
-rw-r--r-- 1 root root 0 Oct 23 17:44 file
root@debian:~/rubytest# ls -lah **/*
-rw-r--r-- 1 root root 0 Oct 23 17:44 dir/subfile
```
**I know the behavior is not meant to be 1:1 to bash**. But this is still unexpected and doesn't make sense to me. Is this intended?
The documentation says:
```
**
Matches directories recursively.
```
--
https://bugs.ruby-lang.org/
prev parent reply other threads:[~2020-10-25 13:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-24 19:57 [ruby-core:100525] [Ruby master Bug#17283] Why does Dir.glob's ** match files in current directory? tyanir
2020-10-25 12:23 ` [ruby-core:100526] " eregontp
2020-10-25 13:14 ` nobu [this message]
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