effectflag: allow to save effect of change in obsmarkers Obsmarkers lack a precious information, what are the changes between the source and the destination. This could be several thing: - The description has changed, with a amend -e for example - The parent has changed, with a rebase for example - The content has changed, with a amend for example - The meta, like the user, has change, with a amend -u for example Or any combination of them. We hijack the createobsmarkers in order to compute the modification and store the effect flag which is basically a bitfield of the changes list above and we store it in the metadata for the moment. The advantage of computing the flag just before creating the obs marker is that all commands will immediately be compatible and we can start working on the UI display of the flag. As a future optimization, the commands will be able to pass the flag directly or data to help computing them, for example amend knows if the description has changed or rebase now if the parent has changed, virtually removing the overhead. To start simple, this patch add the detection and storage of the effect flag when the description has changed. And hide it behind an experimental flag disabled by default 'experimental.evolution.effect-flags'. More flag will follow.

     1

Test the 'effect-flags' feature

     2

     3

Global setup

     4

============

     5

     6

  $ . $TESTDIR/testlib/common.sh

     7

  $ cat >> $HGRCPATH <<EOF

     8

  > [ui]

     9

  > interactive = true

    10

  > [phases]

    11

  > publish=False

    12

  > [extensions]

    13

  > evolve =

    14

  > [experimental]

    15

  > evolution.effect-flags = 1

    16

  > EOF

    17

    18

  $ hg init $TESTTMP/effect-flags

    19

  $ cd $TESTTMP/effect-flags

    20

  $ mkcommit ROOT

    21

    22

Test simple amend touching the description only

    23

-----------------------------------------------

    24

    25

amend the description only

    26

    27

  $ mkcommit A0

    28

  $ hg amend -m "A1"

    29

    30

check result

    31

    32

  $ hg debugobsolete

    33

  471f378eab4c5e25f6c77f785b27c936efb22874 fdf9bde5129a28d4548fadd3f62b265cdd3b7a2e 0 (*) {'ef1': '1', 'user': 'test'} (glob)

    34

  $ hg obslog .

    35

  @  fdf9bde5129a (2) A1

    36

  |

    37

  x  471f378eab4c (1) A0

    38

       rewritten by test (*) as fdf9bde5129a (glob)

    39