The cli option --exclude doesn't work with absolute paths

[Wtyd]

• PHPMD version: 2.10.0
• PHP Version: 7.4.16
• Installation type: composer
• Operating System / Distribution & Version: Debian 10

Current Behavior

I use --exclude option and the execution ignore it. The path to source and the path to exclude are absolute. If the exclude path is relative the behavior is right.

Expected Behavior

The file in the exclude path must be ignored.

Steps To Reproduce:

1. Create a file with any violation.
2. Execute phpmd with the violated rule against the file (or the path of the file) with the option --exclude in absolute path.
3. Enjoy!

# Doesn't Work
vendor/bin/phpmd /var/www/html2/tests/../testsDir/src/File.php ansi unusedcode --exclude "/var/www/html2/tests/../testsDir/src/File.php"

FILE: /var/www/html2/testsDir/src/File.php
------------------------------------------
 21 | VIOLATION | Avoid unused local variables such as '$myVariable'.

Found 1 violation and 0 errors in 109ms

# Works
vendor/bin/phpmd /var/www/html2/tests/../testsDir/src/File.php ansi unusedcode --exclude "testsDir/src/File.php"                                                                    

Found 0 violations and 0 errors in 53ms

No mess detected

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• [ X] I have added every step to reproduce the bug.
• [X ] If possible I added relevant code examples.
• [ X] This issue is about 1 bug and nothing more.
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[tvbeek]

@Wtyd thanks for the report, this is a nice situation that I personally didn't think about.

I think it is a nice feature to support absolute paths, do you have the option to create a PR?

[Wtyd]

I've downloaded the project, taken a look at it, and really don't know where to start. Sorry I can not be of more help.