py3: partially fix pager spawning on Windows
Previously, spinning up the pager crashed because the command and environment
was in bytes. (See also 543a788eea2d.) Now it aborts with an invalid handle:
$ HGMODULEPOLICY=py py -3 ../hg --traceback --config extensions.evolve=!
Traceback (most recent call last):
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 967, in _write
self.fout.write(''.join(msgs))
File "c:\Users\Matt\projects\hg\mercurial\windows.py", line 173, in write
self.fp.write(s[start:end])
OSError: [WinError 6] The handle is invalid
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "c:\Users\Matt\projects\hg\mercurial\scmutil.py", line 164, in callcatch
return func()
File "c:\Users\Matt\projects\hg\mercurial\dispatch.py", line 350, in _runcatchfunc
return _dispatch(req)
File "c:\Users\Matt\projects\hg\mercurial\dispatch.py", line 930, in _dispatch
return commands.help_(ui, 'shortlist')
File "c:\Users\Matt\projects\hg\mercurial\commands.py", line 2930, in help_
ui.write(formatted)
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 948, in write
self._writenobuf(*args, **opts)
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 960, in _writenobuf
self._write(*msgs, **opts)
File "c:\Users\Matt\projects\hg\mercurial\ui.py", line 969, in _write
raise error.StdioError(err)
mercurial.error.StdioError: [Errno 9] The handle is invalid
abort: The handle is invalid
The interesting bit here is that the abort message is marked with ANSI color,
but the OSError is not.
#require reporevlogstore
A repo with unknown revlogv2 requirement string cannot be opened
$ hg init invalidreq
$ cd invalidreq
$ echo exp-revlogv2.unknown >> .hg/requires
$ hg log
abort: repository requires features unknown to this Mercurial: exp-revlogv2.unknown!
(see https://mercurial-scm.org/wiki/MissingRequirement for more information)
[255]
$ cd ..
Can create and open repo with revlog v2 requirement
$ cat >> $HGRCPATH << EOF
> [experimental]
> revlogv2 = enable-unstable-format-and-corrupt-my-data
> EOF
$ hg init empty-repo
$ cd empty-repo
$ cat .hg/requires
dotencode
exp-revlogv2.0
fncache
store
$ hg log
Unknown flags to revlog are rejected
>>> with open('.hg/store/00changelog.i', 'wb') as fh:
... fh.write(b'\x00\x04\xde\xad') and None
$ hg log
abort: unknown flags (0x04) in version 57005 revlog 00changelog.i!
[255]
$ cd ..
Writing a simple revlog v2 works
$ hg init simple
$ cd simple
$ touch foo
$ hg -q commit -A -m initial
$ hg log
changeset: 0:96ee1d7354c4
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: initial
Header written as expected (changelog always disables generaldelta)
$ f --hexdump --bytes 4 .hg/store/00changelog.i
.hg/store/00changelog.i:
0000: 00 01 de ad |....|
$ f --hexdump --bytes 4 .hg/store/data/foo.i
.hg/store/data/foo.i:
0000: 00 03 de ad |....|