Fix UTF-8 corruption in Custom G-code editor (°C and other Unicode characters) #1473

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MrUnknownDE · 2026-04-05T17:56:19+02:00

MrUnknownDE commented

2026-04-05 17:56:19 +02:00

Originally created by @kisslorand on 11/29/2025

This PR fixes an issue where certain characters (for example the degree symbol ° used in °C) became corrupted after opening and saving the Custom G-code editor multiple times.

What was the problem?

When users added symbols like ° inside Start/End G-code, the editor would show them correctly the first time, but after reopening the dialog a few times the text would slowly change into strange characters.

How to reproduce

Open any Custom G-code field
Add a line containing °C
Save the dialog
Reopen it several times
The text begins to change into unreadable characters

What this PR changes

The Custom G-code editor now properly loads and saves text that contains symbols such as °, so these characters stay exactly as the user typed them. This keeps Custom G-code stable across editing sessions and prevents slow corruption of Unicode characters.

Result

°C and similar symbols remain correct
No more “weird characters” appearing after multiple reopen/save cycles
Custom G-code is preserved accurately

Fixes #11502

*Originally created by @kisslorand on 11/29/2025* This PR fixes an issue where certain characters (for example the degree symbol ° used in °C) became corrupted after opening and saving the Custom G-code editor multiple times. #### What was the problem? When users added symbols like ° inside Start/End G-code, the editor would show them correctly the first time, but after reopening the dialog a few times the text would slowly change into strange characters. #### How to reproduce - Open any Custom G-code field - Add a line containing °C - Save the dialog - Reopen it several times - The text begins to change into unreadable characters #### What this PR changes The Custom G-code editor now properly loads and saves text that contains symbols such as °, so these characters stay exactly as the user typed them. This keeps Custom G-code stable across editing sessions and prevents slow corruption of Unicode characters. #### Result - °C and similar symbols remain correct - No more “weird characters” appearing after multiple reopen/save cycles - Custom G-code is preserved accurately Fixes #11502

MrUnknownDE closed this issue

2026-04-05 17:56:19 +02:00

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Reference: github/OrcaSlicer#1473