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Issue #22314: pydoc now works when the LINES environment variable is set.

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This commit is contained in:
Serhiy Storchaka 2014-11-28 00:11:07 +02:00
commit f1fc9fb33d
2 changed files with 13 additions and 2 deletions
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10
Lib/pydoc.py
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@ -1477,12 +1477,18 @@ def ttypager(text):
old = tty.tcgetattr(fd)
tty.setcbreak(fd)
getchar = lambda: sys.stdin.read(1)
except (ImportError, AttributeError):
except (ImportError, AttributeError, io.UnsupportedOperation):
tty = None
getchar = lambda: sys.stdin.readline()[:-1][:1]
try:
r = inc = os.environ.get('LINES', 25) - 1
try:
h = int(os.environ.get('LINES', 0))
except ValueError:
h = 0
if h <= 1:
h = 25
r = inc = h - 1
sys.stdout.write('\n'.join(lines[:inc]) + '\n')
while lines[r:]:
sys.stdout.write('-- more --')