delta-find: use a single snapshot cache when applying a group to an object
This will avoid walking the revlog over and over again in some situations.
The difference is hard to show in our current benchmark suite, as the gain is
lower than their overall instability.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
end_of_line = lf
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
end_of_line = lf
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false
end_of_line = lf