For testing I have changed some files in vendor but now can not find the correct files which I have changed. I don't want to delete and reinstall vendor, I want to revert all changes.
Any suggestions on how to find all changed files in vendor?
You seem to use git, so you can right click on the vendor folder, click Git
then Revert...
and choose the files you want revert.
I would also recommend to change your PhpStorm setting as follows: Go to settings and then Version Control
then tick the checkbox for Show directories with changed descendants
. Now you see which folders/files are changed in your Project Explorer on the left side.