cmdstate: introduce a "saver" contextmanager and use it in place of save()
Previously, the state was only saved in some paths out of these functions. This
can be problematic, if the user ctrl-c's (or `kill -9`'s) the process, or we
exit out of `relocate` for anything besides the "expected" reason, we won't
record that we were in the middle of an evolve.
One of our users has discovered that this leaves hg in a weird state; the user
did something like this:
```
$ hg evolve
<something goes wrong with the merge tool, hits ctrl-c>
<deals with the merge conflicts>
$ hg evolve --continue
abort: no interrupted evolve to continue
$ hg evolve
abort: uncommitted changes
# Note: commands.status.verbose=True is set.
$ hg status
M foo
# The repository is in an unfinished *update* state.
# No unresolved merge conflicts
# To continue: hg update
```
The user did an `hg update`, but it didn't actually do anything besides take it
out of the unfinished update state (the files were still dirty in the working
directory).
VERSION=$(shell python setup.py --version)
PYTHON=python
all: help
deb-prepare:
python setup.py sdist --dist-dir ..
mv -f ../hg-evolve-$(VERSION).tar.gz ../mercurial-evolve_$(VERSION).orig.tar.gz
tar xf ../mercurial-evolve_$(VERSION).orig.tar.gz
rm -rf ../mercurial-evolve_$(VERSION).orig
mv hg-evolve-$(VERSION) ../mercurial-evolve_$(VERSION).orig
cp -r debian/ ../mercurial-evolve_$(VERSION).orig/
@cd ../mercurial-evolve_$(VERSION).orig && echo 'debian build directory ready at' `pwd`
install-home:
$(PYTHON) setup.py install --home="$(HOME)" --prefix="" --force
# test targets
TESTFLAGS ?= $(shell echo $$HGTESTFLAGS)
HGTESTS=$(HGROOT)/tests
help:
@echo 'Commonly used make targets:'
@echo ' deb-prepare - prepare the build of a debian package'
@echo ' tests - run all tests in the automatic test suite'
@echo ' all-version-tests - run all tests against many hg versions'
@echo ' tests-%s - run all tests in the specified hg version'
all: help
_check_hgroot:
ifeq ($(HGROOT),)
$(error HGROOT is not set to the root of the hg source tree)
endif
tests: _check_hgroot
cd tests && $(PYTHON) $(HGTESTS)/run-tests.py $(TESTFLAGS)
# /!\ run outside of the compatibility branch output test will likely fails
test-%: _check_hgroot
cd tests && $(PYTHON) $(HGTESTS)/run-tests.py $(TESTFLAGS) $@
tests-%: _check_hgroot
hg -R $(HGROOT) checkout $$(echo $@ | sed s/tests-//) && \
(cd $(HGROOT) ; $(MAKE) clean ) && \
cd tests && $(PYTHON) $(HGTESTS)/run-tests.py $(TESTFLAGS)
# build a script to extract declared version
all-version-tests: tests-@
.PHONY: tests all-version-tests