cext: shut-up sign compare warnings
Differential Revision: https://phab.mercurial-scm.org/D9627
errors: respect ui.detailed-exit-code in chg
This fixes `test-globalopts.t`, which has been failing since
db5dddb38f5b (errors: raise InputError on early parse error in
dispatch, 2020-11-23).
Differential Revision: https://phab.mercurial-scm.org/D9630
relnotes: document automatically setting `HGPLAIN=1` for external hooks
Differential Revision: https://phab.mercurial-scm.org/D9629
cext: isolate hash size in the revlog handling in a single place
Differential Revision: https://phab.mercurial-scm.org/D9450
rust: document how to enable debug information in optimized builds
This is particularly useful when profiling.
Differential Revision: https://phab.mercurial-scm.org/D9625
filemerge: add support for the new "mergediff" marker style to premerge
This adds support for the new "mergediff" conflict marker style to
"merge-tools.<tool>.premerge" (the new value is called
"keep-mergediff").
Differential Revision: https://phab.mercurial-scm.org/D9606