1 

     2   $ NO_FALLBACK="env RHG_ON_UNSUPPORTED=abort"

     3 

     4   $ cat << EOF >> $HGRCPATH

     5   > [format]

     6   > sparse-revlog = no

     7   > EOF

     8 

     9   $ hg init repo --config format.generaldelta=no --config format.usegeneraldelta=no

    10   $ cd repo

    11   $ (echo header; seq.py 20) > f

    12   $ hg commit -q -Am initial

    13   $ (echo header; seq.py 20; echo footer) > f

    14   $ hg commit -q -Am x

    15   $ hg update ".^"

    16   1 files updated, 0 files merged, 0 files removed, 0 files unresolved

    17   $ (seq.py 20; echo footer) > f

    18   $ hg commit -q -Am y

    19   $ hg debugdeltachain f --template '{rev} {prevrev} {deltatype}\n'

    20   0 -1 base

    21   1 0 prev

    22   2 1 prev

    23 

    24 rhg breaks on non-generaldelta revlogs:

    25 

    26   $ $NO_FALLBACK hg cat f -r . | f --sha256 --size

    27   abort: corrupted revlog (rhg !)

    28   size=0, sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 (rhg !)

    29   size=58, sha256=0cf0386dd4813cc3b957ea790146627dfc0ec42ad3fcf47221b9842e4d5764c1 (no-rhg !)