manifest: define and implement addgroup() on manifestlog Changegroup code was bypassing our manifest interface and calling a method on the private revlog attribute. This commit formalizes the interface for adding a group of revisions from deltas and changes the changegroup code to use it. This enables alternate manifest storage to work with changegroup application operations (like `hg unbundle` and `hg pull`). Differential Revision: https://phab.mercurial-scm.org/D3883

manifest: define and implement rev() on manifestlog Various code is accessing repo.manifestlog._revlog - a private attribute. This bypasses our interface and makes it difficult to implement non-revlog manifest storage. This commit adds a rev() method to the manifestlog interface and class and teaches callers to use it. Ideally this method wouldn't exist, as very few consumers should need to resolve the revision number of a manifest. Again, the primary goal of interface work is to establish and use interfaces first and to improve them later. Differential Revision: https://phab.mercurial-scm.org/D3882

tests: don't allow reodering of glob/re lines across non-glob/re lines As shown in the test case added in the previous patch, it can be really hard to interpret diffs from the test runner if there are multiple lines that would match a given glob or regular expression. It looks like this has been the case since 1ad0ddf8cccc (run-tests: teach _processoutput to handle multiple lines of churn, 2016-03-17). It seems like the point of that was to preserve the "(glob)" annotation on lines even if they got moved. This patch tries to preserve that but only allows the lines to be moved past other glob/re lines. Differential Revision: https://phab.mercurial-scm.org/D3881

tests: add test showing puzzling test output with (glob) lines When using multiple (glob) lines, the test runner often moves the lines around in the output on failure. I have run into this problem many times. The added test shows one example of this. Note that it doesn't show the mismatching lines and instead shows diff hunks that appear to replace a literal by a glob, and other hunks that should clearly match. Differential Revision: https://phab.mercurial-scm.org/D3880

tests: move handling of None "el" out of linematch() It just seems odd for linematch() to know what None means. Differential Revision: https://phab.mercurial-scm.org/D3879

tests: remove some redundant code in run-tests These two lines also happen below if "r" is truthy, which it is in this case since it's equal to "retry". Differential Revision: https://phab.mercurial-scm.org/D3878

tests: don't reimplement enumerate() in run-tests Differential Revision: https://phab.mercurial-scm.org/D3877

histedit: improve help text for --no-backup option Improved help text for --no-backup option to clearly define it's meaning. Differential Revision: https://phab.mercurial-scm.org/D3885