rust: switch hg-core and hg-cpython to rust 2018 edition
Many interesting changes have happened in Rust since the Oxidation Plan was
introduced, like the 2018 edition and procedural macros:
- Opting in to the 2018 edition is a clear benefit in terms of future
proofing, new (nice to have) syntactical sugar notwithstanding. It
also has a new non-lexical, non-AST based borrow checker that has
fewer bugs(!) and allows us to write correct code that in some cases
would have been rejected by the old one.
- Procedural macros allow us to use the PyO3 crate which maintainers have
expressed the clear goal of compiling on stable, which would help in
code maintainability compared to rust-cpython.
In this patch are the following changes:
- Removing most `extern crate` uses
- Updating `use` clauses (`crate` keyword, nested `use`)
- Removing `mod.rs` in favor of an aptly named module file
Like discussed in the mailing list (
https://www.mercurial-scm.org/pipermail/mercurial-devel/2019-July/132316.html
), until Rust integration in Mercurial is considered to be out of the
experimental phase, the maximum version of Rust allowed is whatever the latest
version Debian packages.
Differential Revision: https://phab.mercurial-scm.org/D6597
#require fuzzywuzzy
$ cat >> $HGRCPATH << EOF
> [extensions]
> releasenotes=
> EOF
$ hg init simple-repo
$ cd simple-repo
A fix with a single line results in a bullet point in the appropriate section
$ touch fix1
$ hg -q commit -A -l - << EOF
> single line fix
>
> .. fix::
>
> Simple fix with a single line content entry.
> EOF
$ hg releasenotes -r . $TESTTMP/relnotes-single-line
$ cat $TESTTMP/relnotes-single-line
Bug Fixes
=========
* Simple fix with a single line content entry.
A fix with multiple lines is handled correctly
$ touch fix2
$ hg -q commit -A -l - << EOF
> multi line fix
>
> .. fix::
>
> First line of fix entry.
> A line after it without a space.
>
> A new paragraph in the fix entry. And this is a really long line. It goes on for a while.
> And it wraps around to a new paragraph.
> EOF
$ hg releasenotes -r . $TESTTMP/relnotes-multi-line
$ cat $TESTTMP/relnotes-multi-line
Bug Fixes
=========
* First line of fix entry. A line after it without a space.
A new paragraph in the fix entry. And this is a really long line. It goes on
for a while. And it wraps around to a new paragraph.
A release note with a title results in a sub-section being written
$ touch fix3
$ hg -q commit -A -l - << EOF
> fix with title
>
> .. fix:: Fix Title
>
> First line of fix with title.
>
> Another paragraph of fix with title. But this is a paragraph
> with multiple lines.
> EOF
$ hg releasenotes -r . $TESTTMP/relnotes-fix-with-title
$ cat $TESTTMP/relnotes-fix-with-title
Bug Fixes
=========
Fix Title
---------
First line of fix with title.
Another paragraph of fix with title. But this is a paragraph with multiple
lines.
$ cd ..
Formatting of multiple bullet points works
$ hg init multiple-bullets
$ cd multiple-bullets
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix::
>
> first fix
> EOF
$ touch fix2
$ hg -q commit -A -l - << EOF
> commit 2
>
> .. fix::
>
> second fix
>
> Second paragraph of second fix.
> EOF
$ touch fix3
$ hg -q commit -A -l - << EOF
> commit 3
>
> .. fix::
>
> third fix
> EOF
$ hg releasenotes -r 'all()' $TESTTMP/relnotes-multiple-bullets
$ cat $TESTTMP/relnotes-multiple-bullets
Bug Fixes
=========
* first fix
* second fix
Second paragraph of second fix.
* third fix
$ cd ..
Formatting of multiple sections works
$ hg init multiple-sections
$ cd multiple-sections
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix::
>
> first fix
> EOF
$ touch feature1
$ hg -q commit -A -l - << EOF
> commit 2
>
> .. feature::
>
> description of the new feature
> EOF
$ touch fix2
$ hg -q commit -A -l - << EOF
> commit 3
>
> .. fix::
>
> second fix
> EOF
$ hg releasenotes -r 'all()' $TESTTMP/relnotes-multiple-sections
$ cat $TESTTMP/relnotes-multiple-sections
New Features
============
* description of the new feature
Bug Fixes
=========
* first fix
* second fix
$ cd ..
Section with subsections and bullets
$ hg init multiple-subsections
$ cd multiple-subsections
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix:: Title of First Fix
>
> First paragraph of first fix.
>
> Second paragraph of first fix.
> EOF
$ touch fix2
$ hg -q commit -A -l - << EOF
> commit 2
>
> .. fix:: Title of Second Fix
>
> First paragraph of second fix.
>
> Second paragraph of second fix.
> EOF
$ hg releasenotes -r 'all()' $TESTTMP/relnotes-multiple-subsections
$ cat $TESTTMP/relnotes-multiple-subsections
Bug Fixes
=========
Title of First Fix
------------------
First paragraph of first fix.
Second paragraph of first fix.
Title of Second Fix
-------------------
First paragraph of second fix.
Second paragraph of second fix.
Now add bullet points to sections having sub-sections
$ touch fix3
$ hg -q commit -A -l - << EOF
> commit 3
>
> .. fix::
>
> Short summary of fix 3
> EOF
$ hg releasenotes -r 'all()' $TESTTMP/relnotes-multiple-subsections-with-bullets
$ cat $TESTTMP/relnotes-multiple-subsections-with-bullets
Bug Fixes
=========
Title of First Fix
------------------
First paragraph of first fix.
Second paragraph of first fix.
Title of Second Fix
-------------------
First paragraph of second fix.
Second paragraph of second fix.
Other Changes
-------------
* Short summary of fix 3
$ cd ..
Multiple 'Other Changes' sub-sections for every section
$ hg init multiple-otherchanges
$ cd multiple-otherchanges
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix:: Title of First Fix
>
> First paragraph of fix 1.
> EOF
$ touch feature1
$ hg -q commit -A -l - << EOF
> commit 2
>
> .. feature:: Title of First Feature
>
> First paragraph of feature 1.
> EOF
$ touch feature2
$ hg -q commit -A -l - << EOF
> commit 3
>
> .. feature::
>
> Short summary of feature 2.
> EOF
$ touch fix2
$ hg -q commit -A -l - << EOF
> commit 4
>
> .. fix::
>
> Short summary of fix 2
> EOF
$ hg releasenotes -r 'all()' $TESTTMP/relnotes-multiple-otherchanges
$ cat $TESTTMP/relnotes-multiple-otherchanges
New Features
============
Title of First Feature
----------------------
First paragraph of feature 1.
Other Changes
-------------
* Short summary of feature 2.
Bug Fixes
=========
Title of First Fix
------------------
First paragraph of fix 1.
Other Changes
-------------
* Short summary of fix 2
$ cd ..
Using custom sections in notes
$ hg init custom-section
$ cd custom-section
$ cat >> .hgreleasenotes << EOF
> [sections]
> testsection=Name of Section
> EOF
$ touch a
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. testsection::
>
> First paragraph under this admonition.
> EOF
$ hg releasenotes -r . $TESTTMP/relnotes-custom-section
$ cat $TESTTMP/relnotes-custom-section
Name of Section
===============
* First paragraph under this admonition.
Overriding default sections (For eg. by default feature = New Features)
$ cat >> .hgreleasenotes << EOF
> [sections]
> feature=Feature Additions
> EOF
$ touch b
$ hg -q commit -A -l - << EOF
> commit 2
>
> .. feature::
>
> Adds a new feature.
> EOF
$ hg releasenotes -r . $TESTTMP/relnotes-override-section
$ cat $TESTTMP/relnotes-override-section
Feature Additions
=================
* Adds a new feature.
$ cd ..
Testing output for the --check (-c) flag
$ hg init check-flag
$ cd check-flag
$ touch a
$ hg -q commit -A -l - << EOF
> .. asf::
>
> First paragraph under this admonition.
> EOF
Suggest similar admonition in place of the invalid one.
$ hg releasenotes -r . -c
Invalid admonition 'asf' present in changeset 4026fe9e1c20
$ touch b
$ hg -q commit -A -l - << EOF
> .. fixes::
>
> First paragraph under this admonition.
> EOF
$ hg releasenotes -r . -c
Invalid admonition 'fixes' present in changeset 0e7130d2705c
(did you mean fix?)
$ cd ..
Usage of --list flag
$ hg init relnotes-list
$ cd relnotes-list
$ hg releasenotes -l
feature: New Features
bc: Backwards Compatibility Changes
fix: Bug Fixes
perf: Performance Improvements
api: API Changes
$ cd ..
Raise error on simultaneous usage of flags
$ hg init relnotes-raise-error
$ cd relnotes-raise-error
$ hg releasenotes -r . -l
abort: cannot use both '--list' and '--rev'
[255]
$ hg releasenotes -l -c
abort: cannot use both '--list' and '--check'
[255]
Display release notes for specified revs if no file is mentioned
$ hg init relnotes-nofile
$ cd relnotes-nofile
$ touch fix1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. fix:: Title of First Fix
>
> First paragraph of fix 1.
> EOF
$ hg releasenote -r .
Bug Fixes
=========
Title of First Fix
------------------
First paragraph of fix 1.
$ cd ..
Using multiple admonitions in same changeset
$ hg init relnotes-multiadmon
$ cd relnotes-multiadmon
$ touch file1
$ hg -q commit -A -l - << EOF
> commit 1
>
> .. feature::
>
> Details about new feature.
>
> .. perf::
>
> Improves the execution by 2x
> EOF
$ hg releasenotes -r . $TESTTMP/relnotes-multiple-admonitions
$ cat $TESTTMP/relnotes-multiple-admonitions
New Features
============
* Details about new feature.
Performance Improvements
========================
* Improves the execution by 2x