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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hg init repo

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cd repo

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touch foo

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hg add foo

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for i in 0 1 2 3 4 5 6 7 8 9 10 11; do

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    echo "foo-$i" >> foo

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    hg ci -m "foo-$i" -d "0 0"

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done

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for out in "%nof%N" "%%%H" "%b-%R" "%h" "%r"; do

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    echo "# foo-$out.patch"

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    hg export -v -o "foo-$out.patch" 2:tip

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done