wireproto: add out-of-band error class to allow remote repo to report errors
Older clients will still print the provided error message and not much else:
over ssh, this will be each line prefixed with 'remote: ' in addition to an
"abort: unexpected response: '\n'"; over http, this will be the '---%<---'
banners in addition to the 'does not appear to be a repository' message.
Currently, clients with this patch will display 'abort: remote error:\n' and
the provided error text, but it is trivial to style the error text however is
deemed appropriate.
run only on case-insensitive filesystems, because collision check at
"hg update" is done only on case-insensitive filesystems
$ "$TESTDIR/hghave" icasefs || exit 80
setup repository, and target files
$ HGENCODING=cp932
$ export HGENCODING
$ hg init t
$ cd t
$ python << EOF
> names = ["\x83\x41", # cp932(0x83, 0x41='A'), UNICODE(0x30a2)
> "\x83\x5A", # cp932(0x83, 0x5A='Z'), UNICODE(0x30bb)
> "\x83\x61", # cp932(0x83, 0x61='a'), UNICODE(0x30c2)
> "\x83\x7A", # cp932(0x83, 0x7A='z'), UNICODE(0x30db)
> ]
> for num, name in zip(range(len(names)), names):
> # file for getting target filename of "hg add"
> f = file(str(num), 'w'); f.write(name); f.close()
> # target file of "hg add"
> f = file(name, 'w'); f.write(name); f.close()
> EOF
test filename collison check at "hg add"
$ hg add --config ui.portablefilenames=abort `cat 0`
$ hg add --config ui.portablefilenames=abort `cat 1`
$ hg add --config ui.portablefilenames=abort `cat 2`
$ hg add --config ui.portablefilenames=abort `cat 3`
$ hg status -a
A \x83A (esc)
A \x83Z (esc)
A \x83a (esc)
A \x83z (esc)
test filename collision check at "hg update"
$ hg commit -m 'revision 0'
$ hg update null
0 files updated, 0 files merged, 4 files removed, 0 files unresolved
$ hg update tip
4 files updated, 0 files merged, 0 files removed, 0 files unresolved