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worker: raise exception instead of calling sys.exit() with child's code...
worker: raise exception instead of calling sys.exit() with child's code When a worker process returns an error code, we would call `sys.exit()` with that exit code on the main process. The `SystemExit` exception would then get caught in `scmutil.callcatch()`, which would return that error code. The comment there says "Commands shouldn't sys.exit directly", which I agree with. This patch changes it so we raise a specific exception when a worker fails so we can catch instead. I think that means that `SystemExit` is now always an internal error. (I had earlier thought that this call to `sys.exit()` was from within the child process until Matt Harbison made me look again, so thanks for that!) Differential Revision: https://phab.mercurial-scm.org/D9287
Valentin Gatien-Baron - - Load All Authors

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Yuya Nishihara
chg: import frontend sources...
 r28060 cHg
===
A fast client for Mercurial command server running on Unix.
Install:
$ make
$ make install
Usage:
$ chg help # show help of Mercurial
$ alias hg=chg # replace hg command
$ chg --kill-chg-daemon # terminate background server
Environment variables:
Although cHg tries to update environment variables, some of them cannot be
changed after spawning the server. The following variables are specially
handled:
Jun Wu
chg: remove manual reload logic...
 r28454 * configuration files are reloaded automatically by default.
Yuya Nishihara
chg: import frontend sources...
 r28060 * CHGHG or HG specifies the path to the hg executable spawned as the
background command server.
The following variables are available for testing:
* CHGDEBUG enables debug messages.
* CHGSOCKNAME specifies the socket path of the background cmdserver.
Jun Wu
chg: make timeout adjustable...
 r29345 * CHGTIMEOUT specifies how many seconds chg will wait before giving up
Jun Wu
chg: change default connect timeout to 60 seconds...
 r29357 connecting to a cmdserver. If it is 0, chg will wait forever. Default: 60
Valentin Gatien-Baron
chg: make is possible to call by default an hg binary located next to chg...
 r46128
Build environment variables:
* HGPATH: the path to the hg executable to call when CHGHG and HG are not set,
instead of "hg"
* HGPATHREL=1: when CHGHG and HG are not set, the hg executable will be ./hg
relative to the chg executable. Only works on linux, falls back to "hg"
otherwise.