I would really love the ability to select multiple files and ignore them all by exact match. I run into this often when setting up a new tool for a project; Unity3D is particularly egregious about generating loads of files for every new asset.

Currently, my workaround is to add them to .hgignore or .gitignore manually, but it would be so much easier to select them right in the SourceTree UI and hit "Ignore...".

Thanks!