"cloc --git-diff-rel --csv --by-file refs/tags/first-tag refs/tags/second-tag" returns a wrong number of records

[EnricoPicci]

Describe the bug
The command "cloc --git-diff-rel --csv --by-file refs/tags/first-tag refs/tags/second-tag" returns 3 record but the difference between "first-tag" and "second-tag" is only of 2 records.

cloc; OS; OS version

• cloc version: 2.0
• If running the cloc source, Perl version:
• OS (eg Linux, Windows, macOS, etc): Ubuntu
• OS version: 22.04.3 LTS

To Reproduce

• Clone the repo https://github.com/EnricoPicci/gitlab-tools.git
• Run the command "cloc --git-diff-rel --csv --by-file refs/tags/first-tag refs/tags/second-tag" -> this returns 3 records (2 records actually refer to the same file README.md)
• Run the command "git diff refs/tags/first-tag refs/tags/second-tag --name-only" and this returns 2 files
• Moreover the number of lines changed, deleted, added returned by "cloc --git-diff-rel" is wrong

Expected result
"cloc --git-diff-rel --csv --by-file refs/tags/first-tag refs/tags/second-tag" should return 2 records and the right number of lines changed, added, removed

Additional context
Add any other context about the problem here.

[AlDanial]

I can duplicate the problem. May be a couple of weeks for a fix.

[AlDanial]

Please give 62b9c4b a try. This uses smarter logic based on git itself to align file names (and identify file renames, a long overdue issue). If it works for you I'll add new test cases before closing.