demandimport: blacklist sqlalchemy.events as it has side effects (issue5085) Importing sqlalchemy.events cannot be delayed as it registers classes to their event mechanism. It worked fine before 4f1144c3c72b, since they use new-style imports. But now we have to blacklist it because our demandimport can handle new-style imports. This patch series isn't intended for stable as we don't guarantee API compatibility with 3rd-party extensions. They can temporarily disable the demand importer to work around the issue.

demandimport: enforce ignore list while processing modules in fromlist If a module is loaded as "from . import x" form, there has been no way to disable demand loading for that module because name is ''. This patch makes it possible to prevent demand loading by '<package-name>.x'. We don't use _hgextimport(_origimport) here since attr is known to be a sub-module name. Adding hgext_ to attr wouldn't make sense.

phases: use constants for phase values Magic numbers hinder readability.

test-paths: fix up json output to match $TESTTMP on Windows Without this, the paths were in the form "C:\\Users\\Matt\\AppData...". The test runner wouldn't collapse it down to $TESTTMP, which uses single backslashes.

test-obsolete: conditionalize a test dependent on chmod

progress: display progress bar when HGPLAINEXCEPT contains "progress" This patch changes "progress.shouldprint()" so a feature name is provided to "ui.plain()" to determine if there is an exception specificed in HGPLAINEXCEPT for the progress extension. This will allow user-facing scripts to provide progress output while HGPLAIN is enabled.

run-tests: stop allocating HGPORT3+HGPORT4 The only consumer was test-treemanifest.t, which has been fixed. In general, you should be able to use killdaemons.py to recycle ports instead of going over 3 ports (HGPORT, HGPORT1, HGPORT2). In the future, if you want to add a port, be sure to change portneeded in _getport.

run-tests: refactor port allocation into functions Adding a port reservation was too hard and someone did it wrong. By refactoring, such reservations can be managed more safely. This also adds documentation so that the next person who tries is more likely to update all the places correctly. Note that in this commit the reservation and consumers do not match, that will be fixed in the next commit.

tests: put test-treemanifest.t on a port diet test-treemanifest.t had introduced HGPORT3 and HGPORT4, which were improperly added to run-tests.py. It also was not using HGPORT1. This recycles HGPORT, and shifts everything into HGPORT1 + HGPORT2.

chg: pass sensitive command line flags to server We are going to make chgserver load repo config, remember what it is, and load repo config again to detect config change. This is the first step that passes config, repo, cwd options to server. Traceback is passed as well to cover errors before hitting chgserver.runcommand.