Improve dynamic context building for multi-diff hunks

[lwsli]

Feature request

Proposed Improvements

1. Merge Multiple Changes within Same Function

Proposed Implementation:

• Detect multiple diff segments within the same function
• Merge them into a unified change block
• Fetch the complete function context only once
• Reduce redundant context retrieval operations

2. Extend Context Retrieval Direction

Proposed Implementation:

• Maintain existing upward retrieval to function start
• Add support for downward retrieval to function end
• Provide complete function-level context
• Ensure suggestion accuracy and completeness

Motivation

Current Limitations

1. Redundancy with Multiple Changes

Currently, when multiple changes exist within a single function, each diff segment triggers a separate fetch of the entire function content
This leads to unnecessary context duplication and performance overhead
2. Context Retrieval Direction Limitation

The current implementation only supports retrieving context upward to the function's start position
Lacks the ability to fetch context downward to the function's end
May result in incomplete context and potentially affect suggestion accuracy

[mrT23]

Thanks for the suggestion @lwsli

Your proposal has potential, but it's quite complicated to implement.

let's start from this:

The current implementation only supports retrieving context upward to the function's start position
Lacks the ability to fetch context downward to the function's end

How do you propose to do this ?
We currently search upward using github mechanism that tells you (sometimes) what is the function header.
How do you suggest methodically searching downward (in any programming language)?