Use unsigned version format. This way can use one additional bit, and when encountering invalid revlogs with the first bit set don't produce python warnings or strange error messages.

     1

#!/bin/sh

     2

     3

hg init

     4

touch a

     5

hg add a

     6

hg ci -m "a" -d "1000000 0"

     7

     8

echo 123 > b

     9

hg add b

    10

hg diff --nodates

    11

    12

hg diff --nodates -r tip

    13

    14

echo foo > a

    15

hg diff --nodates