https://www.mercurial-scm.org/repo/hg/rev/964212780daf
"Rust: implementation of `hg`
This commit provides a mostly-working implementation of the
`hg` script in Rust along with scaffolding to support Rust in
the repository.
If you are familiar with Rust, the contents of the added rust/
directory should be pretty straightforward. We create an "hgcli"
package that implements a binary application to run Mercurial.
The output of this package is an "hg" binary.
Our Rust `hg` (henceforth "rhg") essentially is a port of the existing
`hg` Python script. The main difference is the creation of the embedded
CPython interpreter is handled by the binary itself instead of relying
on the shebang. In that sense, rhg is more similar to the "exe wrapper"
we currently use on Windows. However, unlike the exe wrapper, rhg does
not call the `hg` Python script. Instead, it uses the CPython APIs to
import mercurial modules and call appropriate functions. The amount of
code here is surprisingly small.
It is my intent to replace the existing C-based exe wrapper with rhg.
Preferably in the next Mercurial release. This should be achievable -
at least for some Mercurial distributions. The future/timeline for
rhg on other platforms is less clear. We already ship a hg.exe on
Windows. So if we get the quirks with Rust worked out, shipping a
Rust-based hg.exe should hopefully not be too contentious."
Объясните мне, знатоки меркуриала, в чём дело.
В документации на hg update ( http://www.selenic.com/mercurial/hg.1.html#update ) говорится: "If the changeset is not a descendant or ancestor of the working directory's parent, the update is aborted.".
Я создал репку с примерно таким hg glog: http://paste.in.ua/10168/raw/
Если рабочая копия имеет родителя 1, то hg up 2 не должен проходить (согласно документации), а он проходит.
Наверное, они имели в виду что-то другое в документации?
«Mercurial: The Definitive Guide» гласит:
In most cases, trailing whitespace is unnecessary, invisible noise, but it is occasionally problematic
Что-то я не могу представить себе ситуацию, в которой trailing whitespace может создавать проблемы. Кто-то может привести пример?
http://mercurial.selenic.com/wiki/NearestExtension
При помощи этого почему–то нестандартного расширения в моём сборщике теперь проставляется подверсия.
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