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 "[extensions]" >> $HGRCPATH

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echo "convert=" >> $HGRCPATH

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hg init a

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cd a

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echo a > a

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hg ci -d'0 0' -Ama

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hg cp a b

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hg ci -d'1 0' -mb

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hg rm a

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hg ci -d'2 0' -mc

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hg mv b a

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hg ci -d'3 0' -md

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echo a >> a

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hg ci -d'4 0' -me

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cd ..

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hg convert a 2>&1 | grep -v 'subversion python bindings could not be loaded'

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hg --cwd a-hg pull ../a