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

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cat > .hg/hgrc <<EOF

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[encode]

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*.gz = gunzip

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[decode]

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*.gz = gzip

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EOF

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echo "this is a test" | gzip > a.gz

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hg add a.gz

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hg ci -m "test" -d "1000000 0"

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echo %% no changes

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hg status

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touch a.gz

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echo %% no changes

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hg status

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echo %% uncompressed contents in repo

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hg debugdata .hg/store/data/a.gz.d 0

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echo %% uncompress our working dir copy

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gunzip < a.gz

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rm a.gz

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hg co

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echo %% uncompress our new working dir copy

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gunzip < a.gz