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