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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cat > abortcommit.py <<EOF

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from mercurial import util

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def hook(**args):

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    raise util.Abort("no commits allowed")

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def reposetup(ui, repo):

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    repo.ui.setconfig("hooks", "pretxncommit.nocommits", hook)

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EOF

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abspath=`pwd`/abortcommit.py

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echo "[extensions]" >> $HGRCPATH

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echo "mq=" >> $HGRCPATH

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echo "abortcommit = $abspath" >> $HGRCPATH

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hg init foo

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cd foo

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echo foo > foo

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hg add foo

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# mq may keep a reference to the repository so __del__ will not be called

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# and .hg/journal.dirstate will not be deleted:

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hg ci -m foo

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hg ci -m foo

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exit 0