help: markup email addresses as inline literals
Otherwise we get useless links to user@example.org in the HTML version
of the man pages.
#!/bin/sh
hg init
echo a > a
hg add
hg ci -m1
# set mtime of a into the future
touch -t 202101011200 a
# status must not set a's entry to unset (issue1790)
hg status
hg debugstate