cmdutil: changeset_printer: use methods of filectx/changectx.
This allows extensions that modify changeset metadata (e.g.
description) by overriding methods of changectx to get consistent
behavior from all log-like commands, regardless of whether templates
or styles are used. Without this, overriding changectx methods works
if you use styles or templates, but not with default log format.
This meant adding filectx.extra() for consistency with changectx.
#!/bin/sh
# test that we don't interrupt the merge session if
# a file-level merge failed
hg init repo
cd repo
echo foo > foo
echo a > bar
hg ci -Am 'add foo'
hg mv foo baz
echo b >> bar
echo quux > quux1
hg ci -Am 'mv foo baz'
hg up -qC 0
echo >> foo
echo c >> bar
echo quux > quux2
hg ci -Am 'change foo'
# test with the rename on the remote side
HGMERGE=false hg merge
hg resolve -l
# test with the rename on the local side
hg up -C 1
HGMERGE=false hg merge
echo % show unresolved
hg resolve -l
echo % unmark baz
hg resolve -u baz
echo % show
hg resolve -l
hg st
echo % re-resolve baz
hg resolve baz
echo % after
hg resolve -l
echo % resolve all warning
hg resolve
echo % resolve all
hg resolve -a
echo % after
hg resolve -l
true