mail: encode long unicode lines in emails properly (issue5687) 3e544c074459 introduced a bug: emails Content-Transfer-Encoding is silently replaced with 'quoted-printable' while any other encoding could be used by underlying code. The problem is revealed when a long unicode line is encoded. The patch implements proper check which works for any text and encoding.

chg: show timestamp with debug messages Like `strace -tr`, this helps finding performance bottlenecks. Differential Revision: https://phab.mercurial-scm.org/D807

keepalive: add more context to bad status line errors As the TODO in the test said, the previous error message was not very helpful. Let's improve things. Differential Revision: https://phab.mercurial-scm.org/D811

tests: add interface checks for bundle, statichttp, and union peers I forgot to add these when I initially wrote the test. They inherit from localrepo.localpeer, so they should be explicitly tested. Differential Revision: https://phab.mercurial-scm.org/D810

alias: make alias command lazily resolved With many aliases, resolving them could have some visible overhead. Below is part of traceprof [1] output of `hg bookmark --hidden`: (time unit: ms) 37 \ addaliases dispatch.py:526 37 | __init__ (60 times) dispatch.py:402 33 | findcmd (108 times) cmdutil.py:721 16 | findpossible (49 times) cmdutil.py:683 It may get better by optimizing `findcmd` to do a bisect, but we don't really need to resolve an alias if it's not used, so let's make those command entries lazy. After this patch, `addalias` takes less than 1ms. .. perf:: improved performance when many aliases are defined [1]: https://bitbucket.org/facebook/hg-experimental/src/9aca0dbdbdfc48457e5d2581ca2d6e662fced2e6/hgext3rd/traceprof.pyx Differential Revision: https://phab.mercurial-scm.org/D805

alias: test duplicated definition earlier This patch moves the old definition checking logic introduced by f4b7be3f8430 earlier. So that the test itself does not depend on `aliasdef`. The check is to avoid wrapping a same alias multiple times. It can be done by checking the config name and value (`definition` in code), without constructing a `cmdalias` instance. This makes the next patch easier to review. Differential Revision: https://phab.mercurial-scm.org/D804

uncommit: add a test for uncommit with uncommitondirtywdir config in merge Differential Revision: https://phab.mercurial-scm.org/D809

largefiles: force an on-disk merge Largefiles isn't a good candidate for in-memory merge (it uses a custom dirstate, matcher, and the files might not fit in memory) so have it always run an old-style merge. Differential Revision: https://phab.mercurial-scm.org/D683