ui: do not use rawinput() when we have to replace sys.stdin/stdout
See the inline comment for why. The current Python3 hack doesn't work if
more than one user inputs are expected because TextIOWrapper fills its
internal buffer at the first read() request.
Maybe we could write an unbuffered TextIOWrapper, but I don't want to make
things more complicated. Instead, this patch reinvents raw_input(' ') of
no readline support.
#!/usr/bin/env python
#
# An example hgweb CGI script, edit as necessary
# See also https://mercurial-scm.org/wiki/PublishingRepositories
# Path to repo or hgweb config to serve (see 'hg help hgweb')
config = "/path/to/repo/or/config"
# Uncomment and adjust if Mercurial is not installed system-wide
# (consult "installed modules" path from 'hg debuginstall'):
#import sys; sys.path.insert(0, "/path/to/python/lib")
# Uncomment to send python tracebacks to the browser if an error occurs:
#import cgitb; cgitb.enable()
from mercurial import demandimport; demandimport.enable()
from mercurial.hgweb import hgweb, wsgicgi
application = hgweb(config)
wsgicgi.launch(application)