wireprotov2: allow multiple fields to follow revision maps The *data wire protocol commands emit a series of CBOR values. Because revision/delta data may be large, their data is emitted outside the map as a top-level bytestring value. Before this commit, we'd emit a single optional bytestring value after the revision descriptor map. This got the job done. But it was limiting in that we could only send a single field. And, it required the consumer to know that the presence of a key in the map implied the existence of a following bytestring value. This commit changes the encoding strategy so top-level bytestring values in the stream are explicitly denoted in a "fieldsfollowing" key. This key contains an array defining what fields that follow and the expected size of each field. By defining things this way, we can easily send N bytestring values without any ambiguity about their order. In addition, clients only need to know how to parse ``fieldsfollowing`` to know if extra values are present. Because this breaks backwards compatibility, we've bumped the version number of the wire protocol version 2 API endpoint. Differential Revision: https://phab.mercurial-scm.org/D4620

     1

Mercurial

     2

=========

     3

     4

Mercurial is a fast, easy to use, distributed revision control tool

     5

for software developers.

     6

     7

Basic install::

     8

     9

 $ make            # see install targets

    10

 $ make install    # do a system-wide install

    11

 $ hg debuginstall # sanity-check setup

    12

 $ hg              # see help

    13

    14

Running without installing::

    15

    16

 $ make local      # build for inplace usage

    17

 $ ./hg --version  # should show the latest version

    18

    19

See https://mercurial-scm.org/ for detailed installation

    20

instructions, platform-specific notes, and Mercurial user information.