revlog: add a fast path for revision(raw=False) If cache hit and flags are empty, no flag processor runs and "text" equals to "rawtext". So we check flags, and return rawtext. This resolves performance issue introduced by a previous patch.

revlog: make _addrevision only accept rawtext All 3 users of _addrevision use raw: - addrevision: passing rawtext to _addrevision - addgroup: passing rawtext and raw=True to _addrevision - clone: passing rawtext to _addrevision There is no real user using _addrevision(raw=False). On the other hand, _addrevision is low-level code dealing with raw revlog deltas and rawtexts. It should not transform rawtext to non-raw text. This patch removes the "raw" parameter from "_addrevision", and does some rename and doc change to make it clear that "_addrevision" expects rawtext. Archeology shows 2df983125d37 added "raw" flag to "_addrevision", follow-ups e12c0fa1f65b and c1b7b2285522 seem to make the flag unnecessary. test-revlog-raw.py no longer complains.

revlog: use raw revisions in clone test-revlog-raw.py now shows "clone test passed", but there is more to fix.

revlog: use raw revisions in revdiff See the added comment. revdiff is meant to output the raw delta that will be written to revlog. It should use raw. test-revlog-raw.py now shows "addgroupcopy test passed", but there is more to fix.

revlog: use raw content when building delta Using external content provided by flagprocessor when building revlog delta is wrong, because deltas are applied to raw contents in revlog. This patch fixes the above issue by adding "raw=True". test-revlog-raw.py now shows "local test passed", but there is more to fix.

revlog: fix _cache usage in revision() As documented at revlog.__init__, revlog._cache stores raw text. The current read and write usage of "_cache" in revlog.revision lacks of raw=True check. This patch fixes that by adding check about raw, and storing rawtext explicitly in _cache. Note: it may slow down cache hit code path when raw=False and flags=0. That performance issue will be fixed in a later patch. test-revlog-raw now points us to a new problem.

revlog: rename some "text"s to "rawtext" This makes code easier to understand. "_addrevision" is left untouched - it will be changed in a later patch.

revlog: clarify flagprocessor documentation The words "text", "newtext", "bool" could be confusing. Use explicit "text" or "rawtext" and document more about the "bool".

revlog: add a stronger test for raw processing There are some issues about revlog raw processing (flag processor). The test is relatively strong covering many cases. It will verify fixes.

hook: add hook name information to external hook While we are here, we can also add the hook name information to external hook.