SourceTree for Windows
As of version 1.5, you can now do interactive rebases, which will allow you to squash.
SourceTree for Mac
Interactive rebase has been available in SourceTree for Mac since version 1.6 (emphasis mine):
git rebase –interactivecommand allows you to reorganise your commits after you’ve created them (but before you’ve made them public), and now you can do this inside SourceTree. Combine (squash) multiple commits together, or re-order them, simply by dragging & dropping. You can also change the commit message, or edit the content of the commits. Just right-click on a commit in the log and choose ‘Rebase children of
<sha>interactively’ to kick the process off.
Apparently squashing commits is a feature in SourceTree version 1.6 for the Mac.
However, the feature doesn’t seem to be available in the Windows version of SourceTree, which is currently still at version 1.0.8.
Using the command line
You still have the option of using the command line to squash commits:
git rebase -i <sha-of-base-commit>
TODO list, put an
s (for squash) next to commits to squash into the previous commit:
pick e953225 Add meow meow meow s def892d Add master