cmdutil.command wasn't a member of the registrar framework only for a
historical reason. Let's make that happen. This patch keeps cmdutil.command
as an alias for extension compatibility.
Previously, when runcommand raises, chg aborts with, and does not wait for
pager. The call stack is like:
hgc_runcommand -> handleresponse -> readchannel -> debugmsg("failed to
read channel") -> exit(255)
That means, chg returns to the shell, then both the pager and the shell will
read from the terminal at the same time, causing problems.
This patch fixes that by using "atexit" to register the pager cleanup
function so chg will always wait for pager even if runcommand raises.
Since a33895509ccb changed the signature of ui.system(), chgui.system()
should have been updated. This patch factors out the util.system() call
so that chg can override how a shell command is executed.
We've made chg utilize the common code path implemented in pager.py (by
e8fb65f5e551 and e97133c7a9dc), but the chg server does not always start
with a tty. Because of this, uisetup() of the pager extension could be
skipped on the chg server.
Kudos given to Sean Farley for dogfooding new chg and spotting this problem.
See the previous patch for motivation. Previously, the server is started at
a globally shared address. This patch appends pid to the address so it
becomes unique.
Note: with Linux pid namespace, the address may be non-unique, but it does
not affect correctness of chg - chg client will receive an redirection and
that's it.
It doesn't make sense to run test-chg.t without chg, so ignore it with vanilla
hg, and specify chg executable explicitly.
test-chg.t can host chg-specific tests.
Since we expand environment variables in alias lazily, the _clearenvaliases
hack is no longer necessary.
This resolves an issue that a non-shell alias which has environment variables
in its arguments and is set to use pager will not use pager running with chg.
Currently the validate command in chgserver expects config can be loaded
without issues but the config can be broken and chg will print a stacktrace
instead of the parsing error, if a chg server is already running.
This patch adds a handler for ParseError in validate and a new instruction
"exit" to make the client exit without abortmsg. A test is also added to make
sure it will behave as expected.
