save settings from untrusted config files in a separate configparser
This untrusted configparser is a superset of the trusted configparser,
so that interpolation still works.
Also add an "untrusted" argument to ui.config* to allow querying
ui.ucdata.
With --debug, we print a warning when we read an untrusted config
file, and when we try to access a trusted setting that has one value
in the trusted configparser and another in the untrusted configparser.
#!/bin/sh
hg init a
cd a
echo start > start
hg ci -Amstart -d '0 0'
echo new > new
hg ci -Amnew -d '0 0'
echo '% new file'
hg diff --git -r 0
hg cp new copy
hg ci -mcopy -d '0 0'
echo '% copy'
hg diff --git -r 1:tip
hg mv copy rename
hg ci -mrename -d '0 0'
echo '% rename'
hg diff --git -r 2:tip
hg rm rename
hg ci -mdelete -d '0 0'
echo '% delete'
hg diff --git -r 3:tip
cat > src <<EOF
1
2
3
4
5
EOF
hg ci -Amsrc -d '0 0'
chmod +x src
hg ci -munexec -d '0 0'
echo '% chmod 644'
hg diff --git -r 5:tip
hg mv src dst
chmod -x dst
echo a >> dst
hg ci -mrenamemod -d '0 0'
echo '% rename+mod+chmod'
hg diff --git -r 6:tip
echo '% nonexistent in tip+chmod'
hg diff --git -r 5:6
echo '% binary diff'
cp $TESTDIR/binfile.bin .
hg add binfile.bin
hg diff --git > b.diff
cat b.diff
echo '% import binary diff'
hg revert binfile.bin
rm binfile.bin
hg import -mfoo b.diff
cmp binfile.bin $TESTDIR/binfile.bin