.editorconfig

rebase: extract function for rebasing a single node

We currently have _performrebase() and _performrebasesubset(), but we
don't have a method for rebasing a single node (that's inside a loop
in _performrebasesubset()). I think it makes sense to have such a
method, so that's what this patch does. I think it may simplify future
patches I'm working on that have to do with transactions, but I think
this patch makes sense on its own whether or not that future work
happens.

Differential Revision: https://phab.mercurial-scm.org/D2809

# See http://EditorConfig.org for the specification

root = true

[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true

[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true