windows: fix incorrect detection of broken pipe when writing to pager
Paging e.g. hg incoming on Windows and quitting the pager before the
output is consumed will print 'abort: Invalid argument'. This is
because the windows error 0xE8 (ERROR_NO_DATA) is mapped to EINVAL
even though it is documented as 'The pipe is being closed'.
Note that this fix assumes that Windows' last error code is still
valid in the exception handler. It works correctly in all my tests.
A simpler fix would be to just map EINVAL to EPIPE, like was done is
flush previously, but that would be less precise.
This error was not observed previously, when pager was an extension.
# scmutil.py - Mercurial core utility functions
#
# Copyright Matt Mackall <mpm@selenic.com> and other
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from . import repoview
def cachetocopy(srcrepo):
"""return the list of cache file valuable to copy during a clone"""
# In local clones we're copying all nodes, not just served
# ones. Therefore copy all branch caches over.
cachefiles = ['branch2']
cachefiles += ['branch2-%s' % f for f in repoview.filtertable]
cachefiles += ['rbc-names-v1', 'rbc-revs-v1']
cachefiles += ['tags2']
cachefiles += ['tags2-%s' % f for f in repoview.filtertable]
cachefiles += ['hgtagsfnodes1']
return cachefiles