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.

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#!/bin/sh

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echo 'raise Exception("bit bucket overflow")' > badext.py

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abspath=`pwd`/badext.py

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echo '[extensions]' >> $HGRCPATH

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echo "gpg =" >> $HGRCPATH

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echo "hgext.gpg =" >> $HGRCPATH

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echo "badext = $abspath" >> $HGRCPATH

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hg -q help help