hgweb: break templater -> templater circular reference The problem were some functions passed in the "defaults" argument during the templater creation which use "self.t" directly. This creates the cycle: hgweb object -> templater object -> defaults dict -> footer function -> hgweb object Instead of completely avoding the cycle, we break it after using the templater.

#!/bin/sh

hg init a
cd a
echo bar > foo
hg add foo
hg ci -m 'add foo' -d '1000000 0'

echo foobar > foo
hg ci -m 'change foo' -d '1000001 0'

echo 'quiet:'
hg --quiet diff -r 0 -r 1
echo

echo 'normal:'
hg diff -r 0 -r 1
echo

echo 'verbose:'
hg --verbose diff -r 0 -r 1
echo

echo 'debug:'
hg --debug diff -r 0 -r 1
echo