Bryan O'Sullivan <bryano@fb.com> [Tue, 11 Apr 2017 14:54:12 -0700] rev 31962
stdio: raise StdioError if something goes wrong in ui._write_err
The prior code used to ignore certain classes of error, which was
not the right thing to do.
Bryan O'Sullivan <bryano@fb.com> [Tue, 11 Apr 2017 14:54:12 -0700] rev 31961
stdio: raise StdioError if something goes wrong in ui._write
Bryan O'Sullivan <bryano@fb.com> [Tue, 11 Apr 2017 14:54:12 -0700] rev 31960
stdio: catch StdioError in dispatch.run and clean up appropriately
We attempt to report what went wrong, and more importantly exit the
program with an error code.
(The exception we catch is not yet raised anywhere in the code.)
Bryan O'Sullivan <bryano@fb.com> [Tue, 11 Apr 2017 14:54:12 -0700] rev 31959
stdio: add machinery to identify failed stdout/stderr writes
Mercurial currently fails to notice failures to write to stdout or
stderr. A correctly functioning command line tool should detect
this and exit with an error code.
To achieve this, we need a little extra plumbing, which we start
adding here.