Don't try to determine interactivity if ui() called with interactive=False. WSGI applications are not supposed to refer to sys.stdin. In ed6df6b1c29a, hgweb and hgwebdir were fixed to pass interactive=False to their ui()'s, but sys.stdin.isatty() was still called by the ui objects. This change makes sure only the ui.fixconfig() method will call ui.isatty() (by making the ui._readline() method, which is currently only called from ui.prompt(), private). ui.fixconfig() is changed to let config files override the initial interactivity setting, but not check isatty() if interactive=False was specified in the creation of the ui.

#!/bin/sh

echo % test --time
hg --time help -q help 2>&1 | grep Time > /dev/null || echo --time failed

echo % test --profile
if "$TESTDIR/hghave" -q hotshot; then
    # hotshot might be missing for licensing issues
    hg --profile help -q help 2>&1 | grep ncalls > /dev/null || echo --profile failed
fi

echo % test --lsprof
if "$TESTDIR/hghave" -q lsprof; then
    hg --lsprof help -q help 2>&1 | grep CallCount > /dev/null || echo --lsprof failed
fi