Add: give ‘does not exist ERROR’ if a file with a leading question mark is given

[samuelkees]

Bug Report

Description

see Issue name.

Reproduce

I have a dvc folder data with has two files test?test.txt and ?test.txt:

.
└── data
    ├── test?test.txt
    └── ?test.txt

1 directory, 3 files

If I try to add ?test.txt I get this error:

$ dvc add data/\?test.txt
Adding...                                                                               
ERROR: output 'data?test.txt' does not exist

Apparently DVC things I want to add data?test.txt and yes this file does not exist, but this is not what I wanna add. The other file data/test?test.txt I can add without any problems. I thing there is a problem with the leading question mark. I also tested this witch a leading ‘#’, same problem.

My question is: Is this on purpose? I noticed the behavior in DVC version 2.18.1 or so. Befor I hat no problem with leading question marks.

Expected

Just add the file.

Environment information

DVC version: 2.20.0 (deb)
---------------------------------
Platform: Python 3.8.3 on Linux-5.4.0-125-generic-x86_64-with-glibc2.14
Supports:
	http (aiohttp = 3.8.1, aiohttp-retry = 2.8.3),
	https (aiohttp = 3.8.1, aiohttp-retry = 2.8.3),
	ssh (sshfs = 2022.6.0)
Cache types: hardlink, symlink
Cache directory: ext4 on /dev/sda2
Caches: local
Remotes: None
Workspace directory: ext4 on /dev/sda2
Repo: dvc, git

Additional Information (if any):

[karajan1001]

Hi, @samuelkees .

Sorry I can not reproduce it.

$ dvc add data/?ext.txt                                                                                                -127-[ins][18:43:11]
100% Adding...|████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████|1/1 [00:00, 68.11file/s]

To track the changes with git, run:

	git add data/.gitignore data/text.txt.dvc

To enable auto staging, run:

	dvc config core.autostage true
$ dvc add data?text.txt                                                                                                     [ins][18:43:21]
100% Adding...|███████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████|1/1 [00:00, 124.39file/s]

To track the changes with git, run:

	git add .gitignore data_text.txt.dvc

To enable auto staging, run:

	dvc config core.autostage true
$ tree
.
├── data
│   ├── text.txt
│   └── text.txt.dvc
├── data_text.txt
└── data_text.txt.dvc

1 directory, 4 files

And If I remember correctly that this wild match was done by the shell instead of DVC, for example

$ cat data/?ext.txt      

show a correct result on my zsh.

[samuelkees]

I use Bash and cat is working

$ cat data/\?test.txt 
testtesttesttest
testtesttesttest
testtesttesttest

? is part of the name...

cat data/?????.txt 
testtesttesttest
testtesttesttest
testtesttesttest

? is used as wildcard character...

Maybe I miss communicated. The name of the file starts with a ?. I don’t use ? as a wildcard character or something. You can see this in my first cat command the ? is escaped \?. If I understand you example correctly, your file has the name data/text.txt but my file name is data/?test.txt (again the ? is part of the name). Can you try your example with a file named ?text.txt ?

[daavoo]

@samuelkees Can you try running the command but wrapping the argument with quotes 'data/?test.txt'?

[samuelkees]

@daavoo i did its as well, same behavior for me.

dvc add 'data/?test.txt' 
Adding...                                                                                                            
ERROR: output 'data?test.txt' does not exist

[samuelkees]

I tested it with DVC version 2.18.0; all cool. DVC version 2.18.1 i get the same error.

$ tree
.
`-- data
    `-- ?test.txt

1 directory, 1 file

$ dvc --version
2.18.0

$ dvc add data/\?test.txt 
WARNING: 'data/?test.txt' is empty.                                                                                                               
100% Adding...|██████████████████████████████████████████████████████████████████████████████████████████████████████████|1/1 [00:00, 24.07file/s]
                                                                                                                                                  
To track the changes with git, run:

	git add data/.gitignore 'data/?test.txt.dvc'

To enable auto staging, run:

	dvc config core.autostage true

[daavoo]

This was introduced in iterative/dvc-objects@23e87bb cc @efiop