tests/test-update-reverse

hgext: more patchbomb documentation

+ Add a description of how to enable this extension

+ Note which command it provides (it's not very easy to guess
  that "hgext.patchbomb" enables the "email" command, unless one
  can read Python sources)

+ Expand the descriptions of the -n and -m options of "hg email".

+ Mention that formail is (commonly) part of the procmail package.

#!/bin/sh

hg init
touch a
hg add a
hg commit -m "Added a" -d "1000000 0"

touch main
hg add main
hg commit -m "Added main" -d "1000000 0"
hg checkout 0

echo Main should be gone
ls

touch side1
hg add side1
hg commit -m "Added side1" -d "1000000 0"
touch side2
hg add side2
hg commit -m "Added side2" -d "1000000 0"

hg log

echo Should have two heads, side2 and main
hg heads

echo Should show "a side1 side2"
ls

hg update --debug -C 1
echo Should only show "a main"
ls