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censor: be more verbose about the other steps too...
censor: be more verbose about the other steps too If we informs the user about head checking, we should tell him when the other operation happens too. Otherwise the user can imagine to still be in the head checking part.
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rhg

The rhg executable implements a subset of the functionnality of hg
using only Rust, to avoid the startup cost of a Python interpreter.
This subset is initially small but grows over time as rhg is improved.
When fallback to the Python implementation is configured (see below),
rhg aims to be a drop-in replacement for hg that should behave the same,
except that some commands run faster.

Building

To compile rhg, either run cargo build --release from this rust/rhg/
directory, or run make build-rhg from the repository root.
The executable can then be found at rust/target/release/rhg.

Mercurial configuration

rhg reads Mercurial configuration from the usual sources:
the user’s ~/.hgrc, a repository’s .hg/hgrc, command line --config, etc.
It has some specific configuration in the [rhg] section.

See hg help config.rhg for details.

Installation and configuration example

For example, to install rhg as hg for the current user with fallback to
the system-wide install of Mercurial, and allow it to run even though the
rebase and absorb extensions are enabled, on a Unix-like platform:

  • Build rhg (see above)
  • Make sure the ~/.local/bin exists and is in $PATH
  • From the repository root, make a symbolic link with
    ln -s rust/target/release/rhg ~/.local/bin/hg
  • Configure ~/.hgrc with:
[rhg]
on-unsupported = fallback
fallback-executable = /usr/bin/hg
allowed-extensions = rebase, absorb
  • Check that the output of running
    hg notarealsubcommand
    starts with hg: unknown command, which indicates fallback.

  • Check that the output of running
    hg notarealsubcommand --config rhg.on-unsupported=abort
    starts with unsupported feature:.