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HAProxy's development cycle consists in one development branch, and multiple
maintenance branches.

All the development is made into the development branch exclusively. This
includes mostly new features, doc updates, cleanups and or course, fixes.

The maintenance branches, also called stable branches, never see any
development, and only receive ultra-safe fixes for bugs that affect them,
that are picked from the development branch.

Branches are numbered in 0.1 increments. Every 6 months, upon a new major
release, the development branch enters maintenance and a new development branch
is created with a new, higher version. The current development branch is
2.9-dev, and maintenance branches are 2.8 and below.

Fixes created in the development branch for issues that were introduced in an
earlier branch are applied in descending order to each and every version till
that branch that introduced the issue: 2.8 first, then 2.7, then 2.6 and so
on. This operation is called "backporting". A fix for an issue is never
backported beyond the branch that introduced the issue. An important point is
that the project maintainers really aim at zero regression in maintenance
branches, so they're never willing to take any risk backporting patches that
are not deemed strictly necessary.

Fixes consist of patches managed using the Git version control tool and are
identified by a Git commit ID and a commit message. For this reason we
indistinctly talk about backporting fixes, commits, or patches; all mean the
same thing. When mentioning commit IDs, developers always use a short form
made of the first 8 characters only, and expect the AI assistant to do the
same.

It seldom happens that some fixes depend on changes that were brought by other
patches that were not in some branches and that will need to be backported as
well for the fix to work. In this case, such information is explicitly provided
in the commit message by the patch's author in natural language.

Developers are serious and always indicate if a patch needs to be backported.
Sometimes they omit the exact target branch, or they will say that the patch is
"needed" in some older branch, but it means the same. If a commit message
doesn't mention any backport instructions, it means that the commit does not
have to be backported. And patches that are not strictly bug fixes nor doc
improvements are normally not backported. For example, fixes for design
limitations, architectural improvements and performance optimizations are
considered too risky for a backport. Finally, all bug fixes are tagged as
"BUG" at the beginning of their subject line. Patches that are not tagged as
such are not bugs, and must never be backported unless their commit message
explicitly requests so.

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A developer is reviewing the development branch, trying to spot which commits
need to be backported to maintenance branches. This person is already expert
on HAProxy and everything related to Git, patch management, and the risks
associated with backports, so he doesn't want to be told how to proceed nor to
review the contents of the patch.

The goal for this developer is to get some help from the AI assistant to save
some precious time on this tedious review work. In order to do a better job, he
needs an accurate summary of the information and instructions found in each
commit message. Specifically he needs to figure if the patch fixes a problem
affecting an older branch or not, if it needs to be backported, if so to which
branches, and if other patches need to be backported along with it.

The indented text block below after an "id" line and starting with a Subject line
is a commit message from the HAProxy development branch that describes a patch
applied to that branch, starting with its subject line, please read it carefully.

