Renaming Tab after sucessful build causes build failure

[HattonLe]

Describe the problem

Renaming source file Tabs in a multi-file .cpp and .h project causes a build failure because the original files are not renamed\deleted in the arduino project .cache folder.

This bug has been present for years.

To reproduce

Successfully compile a multi-file .cpp and .h project.
Then rename the Tabs for a .cpp and .h file to be a different filename.
Then try to recompile.
It will fail saying duplicate definitions of methods etc...
To get a successful compile again, browse to the users ".cache/arduino/sketches" folder and either delete all the cache folders or find the relevant subfolder and delete the old files out of there.

Expected behavior

A clean recompile without errors.

Arduino IDE version

Doesn't matter

Operating system

N/A

Operating system version

Doen't matter

Additional context

This bug has been present for years. It occurs regardless of OS.

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details

[per1234]

Hi @HattonLe. Thanks for taking the time to submit an issue.

I see we have another report about this at #1240.

It is best to have only a single issue per subject so we can consolidate all relevant discussion to one place, so I'll go ahead and close this in favor of the other.

[HattonLe]

Ah, okie dokie. I did have a look but didn't see an equivalent report listed against Tabs. Sent with [Proton Mail](https://proton.me/mail/home) secure email.

…

On Thursday, 20 March 2025 at 08:12, Per Tillisch ***@***.***> wrote: Hi ***@***.***(https://github.com/HattonLe). Thanks for taking the time to submit an issue. I see we have another report about this at [#1240](#1240). It is best to have only a single issue per subject so we can consolidate all relevant discussion to one place, so I'll go ahead and close this in favor of the other. — Reply to this email directly, [view it on GitHub](#2870 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AEF5O3EGUXI6HXUGUUNRTG32VJZ5RAVCNFSM6AAAAABZMYNFL6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDOMZZGUZDIOJSGU). You are receiving this because you were mentioned.Message ID: ***@***.***> [per1234]per1234 left a comment [(arduino/arduino-cli#2870)](#2870 (comment)) Hi ***@***.***(https://github.com/HattonLe). Thanks for taking the time to submit an issue. I see we have another report about this at [#1240](#1240). It is best to have only a single issue per subject so we can consolidate all relevant discussion to one place, so I'll go ahead and close this in favor of the other. — Reply to this email directly, [view it on GitHub](#2870 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AEF5O3EGUXI6HXUGUUNRTG32VJZ5RAVCNFSM6AAAAABZMYNFL6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDOMZZGUZDIOJSGU). You are receiving this because you were mentioned.Message ID: ***@***.***>