gemini-cli - 💡(How to fix) Fix The functionality to read code by sections (Line 100 to 250) is completely useless VS to reading the entire file code. [1 participants]

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google-gemini/gemini-cli#26271Fetched 2026-05-01 05:52:57
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Root Cause

I've been testing for days and have come to a conclusion: when you work with Gemini and request small modifications or even move sections of your application—for example, when I ask it to move part of a function (moving this functionality so it's before the last one, i.e., reordering functionalities)—Gemini starts reading in sections, line by line, e.g., from line 100 to 350. This is awful because I've discovered that sometimes when Gemini finds the line, it makes the replacement and puts it in the requested location, but it forgets to delete the old part to avoid creating duplicate code. Therefore, it would be better if, instead of reading the code in sections, it read it completely and had an overview of the entire code file.

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What happened?

I've been testing for days and have come to a conclusion: when you work with Gemini and request small modifications or even move sections of your application—for example, when I ask it to move part of a function (moving this functionality so it's before the last one, i.e., reordering functionalities)—Gemini starts reading in sections, line by line, e.g., from line 100 to 350. This is awful because I've discovered that sometimes when Gemini finds the line, it makes the replacement and puts it in the requested location, but it forgets to delete the old part to avoid creating duplicate code. Therefore, it would be better if, instead of reading the code in sections, it read it completely and had an overview of the entire code file.

What did you expect to happen?

Gemini should be efficient at reading code (files) to make efficient changes, by reading the file completely instead of in sections, thus gaining a more accurate understanding of all the methods in that file.

I hope this part of GEMINI be improved

Client information

About Gemini CLI

CLI Version 0.42.0-nightly.20260428.g59b2dea0e
Model gemini-3-flash-preview
Sandbox no sandbox
OS win32
Auth Method Signed in with Google Tier Gemini Code Assist for individuals

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Anything else we need to know?

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extent analysis

TL;DR

The issue can be mitigated by requesting Gemini to read the entire code file instead of in sections to avoid duplicate code.

Guidance

  • Verify the issue by testing Gemini with small modifications and reordering functionalities to see if it creates duplicate code.
  • Check if there are any existing configuration options or flags in Gemini CLI that allow for reading the entire code file at once.
  • Consider reporting this issue to the Gemini development team as an improvement request, providing detailed steps to reproduce the problem.
  • Test Gemini with different file sizes and complexity to see if the issue persists.

Notes

The provided information suggests that Gemini's current behavior may lead to duplicate code when making modifications, but without direct access to the Gemini codebase or documentation, it's difficult to provide a definitive fix.

Recommendation

Apply workaround: Report the issue to the Gemini development team and request an improvement to read the entire code file instead of in sections, as this may require changes to the underlying Gemini architecture.

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