A new 'diff.<driver>.process' configuration has been introduced to
allow a long-running external process to act as a hunk provider,
enabling external tools to control which lines Git considers changed
while leaving all output formatting (word diff, color, blame, etc.) to
Git's standard pipeline.
* mm/diff-process-hunks:
fixup! diff: consult oid-only hunk providers via diff.<driver>.process
diff: consult oid-only hunk providers via diff.<driver>.process
userdiff: add diff.<driver>.process config
sub-process: add a gentle status read
sub-process: separate process lifecycle from hashmap management
blame: read precomputed hunks
diff: read precomputed hunks for stat output
diff: record precomputed hunks during stat output
diff-hunks: add the store format, library, and command
diff: introduce a hunk provider interface
gitattributes: document how external diff drivers relate to diff features
e65d1295fe