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.

#!/bin/sh

hg init a
cd a
echo a > foo
hg rm foo
hg add foo
hg commit -m 1 -d "1000000 0"
hg remove
rm foo
hg remove foo
hg revert --all
rm foo
hg remove --after
hg commit -m 2 -d "1000000 0"
hg export --nodates 0
hg export --nodates 1
hg log -p -r 0
hg log -p -r 1

echo a > a
hg add a
hg rm a
hg rm -f a
echo b > b
mkdir c
echo d > c/d
hg ci -A -m 3 -d "1000001 0"
echo c >> b
hg rm b
hg rm -f b
hg rm -A c/d
hg st
cat c/d
hg revert c
hg rm -A
hg st
hg rm -A c
hg st
rm c/d
hg rm -A
hg st

cd ..
hg clone a b