Allow negative line spacing for the script editor in Editor Settings

[Calinou]

This can be used to make text even more compact with certain fonts.

In the meantime, you can edit editor_settings-4.tres while the editor is closed and manually input a negative value for text_editor/appearance/whitespace/line_spacing (add that line if it's not present in your configuration file).

• This closes Code Editor line spacing too large even at zero #76385.

[Rindbee]

I don't think this is a good workaround. Using negative line_spacing on CodeEdit may cause a crash in some cases (when changing font_size/line_spacing, resulting in the condition font_size + line_spacing = -3 being met).

[RedworkDE]

Suggested change

	EDITOR_SETTING(Variant::INT, PROPERTY_HINT_RANGE, "text_editor/appearance/whitespace/line_spacing", 4, "-10,50,1")
	EDITOR_SETTING(Variant::INT, PROPERTY_HINT_RANGE, "text_editor/appearance/whitespace/line_spacing", 4, "0,50,1,or_greater,or_lesser")

Alternatively just let users type in negative numbers manually in the editor?

[Calinou]

I'm not sure, as this would allow using extremely large values that would make the editor look completely broken.

[Calinou]

I don't think this is a good workaround. Using negative line_spacing on CodeEdit may cause a crash in some cases (when changing font_size/line_spacing, resulting in the condition font_size + line_spacing = -3 being met).

I think it's better to fix the crash (which should be possible) if it still occurs on latest master.

[kitbdev]

Looks good, works as expected.

• I think any crashes were fixed by #76605

-10 is good for the minimum, since going too low can result in overlapping or errors in some cases (-21 prints errors for me).

[Repiteo]

Thanks!