chunkiter: handle large reads more efficiently
- for large reads, don't attempt to read more than necessary
- if we've gathered the exact number of bytes needed, avoid a string copy
"""
i18n.py - internationalization support for mercurial
Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
This software may be used and distributed according to the terms
of the GNU General Public License, incorporated herein by reference.
"""
import gettext
t = gettext.translation('hg', fallback=1)
gettext = t.gettext
_ = gettext