Respect locale environment variables on darwin. In python 2.4+ on darwin, locale.getpreferredencoding() returns mac-roman regardless of what LC_CTYPE, LANG etc are set to. This can produce hard-to-notice conversion errors if input text is not in mac-roman. So this patch overrides it with setlocale/getlocale if the environment has been customized, on the assumption that the user has done so deliberately.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "patchbomb=" >> $HGRCPATH

hg init
echo a > a
hg commit -Ama -d '1 0'

hg email --date '1970-1-1 0:1' -n -f quux -t foo -c bar tip | \
  sed -e 's/\(Message-Id:.*@\).*/\1/'

echo b > b
hg commit -Amb -d '2 0'

hg email --date '1970-1-1 0:2' -n -f quux -t foo -c bar -s test 0:tip | \
  sed -e 's/\(Message-Id:.*@\|In-Reply-To:.*@\).*/\1/'