$ cat << EOF >> $HGRCPATH

  > [format]

  > usegeneraldelta=yes

  > EOF

  $ hg init debugrevlog

  $ cd debugrevlog

  $ echo a > a

  $ hg ci -Am adda

  adding a

  $ hg debugrevlog -m

  format : 1

  flags  : inline, generaldelta

  revisions     :  1

      merges    :  0 ( 0.00%)

      normal    :  1 (100.00%)

  revisions     :  1

      full      :  1 (100.00%)

      deltas    :  0 ( 0.00%)

  revision size : 44

      full      : 44 (100.00%)

      deltas    :  0 ( 0.00%)

  chunks        :  1

      0x75 (u)  :  1 (100.00%)

  chunks size   : 44

      0x75 (u)  : 44 (100.00%)

  avg chain length  : 0

  max chain length  : 0

  compression ratio : 0

  uncompressed data size (min/max/avg) : 43 / 43 / 43

  full revision size (min/max/avg)     : 44 / 44 / 44

  delta size (min/max/avg)             : 0 / 0 / 0

Test debugindex, with and without the --debug flag

  $ hg debugindex a

     rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

       0         0       3   ....       0 b789fdd96dc2 000000000000 000000000000 (re)

  $ hg --debug debugindex a

     rev    offset  length  ..... linkrev nodeid                                   p1                                       p2 (re)

       0         0       3   ....       0 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 (re)

  $ hg debugindex -f 1 a

     rev flag   offset   length     size  .....   link     p1     p2       nodeid (re)

       0 0000        0        3        2   ....      0     -1     -1 b789fdd96dc2 (re)

  $ hg --debug debugindex -f 1 a

     rev flag   offset   length     size  .....   link     p1     p2                                   nodeid (re)

       0 0000        0        3        2   ....      0     -1     -1 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 (re)

debugdelta chain basic output

  $ hg debugdeltachain -m

      rev  chain# chainlen     prev   delta       size    rawsize  chainsize     ratio   lindist extradist extraratio

        0       1        1       -1    base         44         43         44   1.02326        44         0    0.00000

  $ hg debugdeltachain -m -T '{rev} {chainid} {chainlen}\n'

  0 1 1

  $ hg debugdeltachain -m -Tjson

  [

   {

    "chainid": 1,

    "chainlen": 1,

    "chainratio": 1.02325581395,

    "chainsize": 44,

    "compsize": 44,

    "deltatype": "base",

    "extradist": 0,

    "extraratio": 0.0,

    "lindist": 44,

    "prevrev": -1,

    "rev": 0,

    "uncompsize": 43

   }

  ]

Test max chain len

  $ cat >> $HGRCPATH << EOF

  > [format]

  > maxchainlen=4

  > EOF

  $ printf "This test checks if maxchainlen config value is respected also it can serve as basic test for debugrevlog -d <file>.\n" >> a

  $ hg ci -m a

  $ printf "b\n" >> a

  $ hg ci -m a

  $ printf "c\n" >> a

  $ hg ci -m a

  $ printf "d\n" >> a

  $ hg ci -m a

  $ printf "e\n" >> a

  $ hg ci -m a

  $ printf "f\n" >> a

  $ hg ci -m a

  $ printf 'g\n' >> a

  $ hg ci -m a

  $ printf 'h\n' >> a

  $ hg ci -m a

  $ hg debugrevlog -d a

  # rev p1rev p2rev start   end deltastart base   p1   p2 rawsize totalsize compression heads chainlen

      0    -1    -1     0   ???          0    0    0    0     ???      ????           ?     1        0 (glob)

      1     0    -1   ???   ???          0    0    0    0     ???      ????           ?     1        1 (glob)

      2     1    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)

      3     2    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)

      4     3    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        4 (glob)

      5     4    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        0 (glob)

      6     5    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        1 (glob)

      7     6    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)

      8     7    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)

  $ cd ..

Test internal debugstacktrace command

  $ cat > debugstacktrace.py << EOF

  > from mercurial.util import debugstacktrace, dst, sys

  > def f():

  >     debugstacktrace(f=sys.stdout)

  >     g()

  > def g():

  >     dst('hello from g\\n', skip=1)

  >     h()

  > def h():

  >     dst('hi ...\\nfrom h hidden in g', 1)

  > f()

  > EOF

  $ python debugstacktrace.py

  stacktrace at:

   debugstacktrace.py:10 in * (glob)

   debugstacktrace.py:3  in f

   debugstacktrace.py:10 in * (glob)

   debugstacktrace.py:4  in f

  hi ...

  from h hidden in g at:

   debugstacktrace.py:10 in * (glob)

   debugstacktrace.py:4  in f

   debugstacktrace.py:7  in g