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_hist_get_portion try islice first

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laerus 2016-07-28 20:44:34 +03:00
parent d2536198ae
commit a1d742e7d0
1 changed files with 8 additions and 0 deletions
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8
xonsh/history.py
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@ -9,6 +9,7 @@ import uuid
import argparse
import builtins
import functools
import itertools
import operator
import threading
import collections
@ -414,6 +415,13 @@ def _hist_get_session(session='session', location=None):
def _hist_get_portion(commands, slices):
"""Yield from portions of history commands. """
if len(slices) == 1:
s = ensure_slice(slices[0])
try:
yield from itertools.islice(commands, s.start, s.stop, s.step)
return
except ValueError: # islice failed
pass
commands = list(commands)
for s in slices:
s = ensure_slice(s)