tests: fix missing (glob) annotations in test-bundle2-exchange.t

util: fix %-formatting on docstring by moving a closing parenthesis We have to do the % formatting over the sysstr, since the things we're going to splat into it are themselves sysstrs. This is probably technically wrong-ish, since bt is probably actually a bytestr here, but this fixes the immediate issue, which was that hg was broken on Python 3.

revset: stop supporting plain list as input set (API) There was no deprecwarn(), but this is the same kind of API compatibility as the one removed by the previous patch.

revset: stop supporting predicate that returns plain list (API) It's said to be removed after 3.9.

mdiff: add a hunkinrange helper function This factors out hunk filtering logic by line range that is similar in mdiff.blocksinrange() and hgweb.webutil.diffs().

templater: provide loop counter as "index" keyword This was originally written for JSON templating where we would have to be careful to not add extra comma, but seems generally useful. Inner loop started by % operator has its own counter.

templater: rename variable "i" to "v" in runmap() I want to reuse "i" for index.

formatter: reorder code that builds template mapping This makes the future patch slightly simpler.

revlog: avoid applying delta chain on cache hit Previously, revlog.revision(raw=False) may try to apply the delta chain on _cache hit. That happens if flags are non-empty. This patch makes rawtext reused so delta chain application is avoided. "_cache" and "rev" are moved a bit to avoid unnecessary assignments.

revlog: indent block to make review easier