Prework

• Read and agree to the code of conduct and contributing guidelines.
• If there is already a relevant issue, whether open or closed, comment on the existing thread instead of posting a new issue.
• New features take time and effort to create, and they take even more effort to maintain. So if the purpose of the feature is to resolve a struggle you are encountering personally, please consider first posting a "trouble" or "other" issue so we can discuss your use case and search for existing solutions first.
• Format your code according to the tidyverse style guide.

Proposal

When this first came up, I originally decided against it because of the ~6% speed penalty if there are many skipped targets. However, I am realizing how important it is to see skipped targets as part of the overall picture when monitoring progress. Working on a patch to log skipped targets and show them in tar_progress(), tar_poll(), tar_watch(), tar_progress_branches(), and tar_progress_summary().