You can no longer enter in the editor a character that requires ALT + SHIFT ([, ], \, …)

[fabriceci]

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Bugsquad note: This issue has been confirmed several times already. No need to confirm it further.

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Godot version

4.0 Dev (8c162f4)

System information

macOS 11.5

Issue description

On mac some character that we use for programming required to do ALT + SHIFT + some key:

• [ and ] = ALT + SHIFT + ( or )
• \ = ALT + SHIFT + /
• etc.

This worked fine in 3.x:

Now is broken:

Steps to reproduce

Open the editor, try to enter a [ on a mac keyboard.

Minimal reproduction project

/

[bruvzg]

It is a regression from #43663, which is blocking Alt (e.g. this line in LineEdit and equivalent in other controls)

godot/scene/gui/line_edit.cpp

Line 525 in 21529c9

bool allow_unicode_handling = !(k->is_command_pressed() || k->is_ctrl_pressed() || k->is_alt_pressed() || k->is_meta_pressed());

This is not macOS specific, AltGR is also used as a third-level input modifier on Windows and Linux.

Edit: If I remember correctly, it's also possible to configure Win or Right Control as 5-level modifier on Linux.

[akien-mga]

CC @EricEzaM

[EricEzaM]

I think this is a duplicate of #6851

@bruvzg I don't think it is a regression from that PR, but I'm not sure. The issue was never really solved as #54303 was reverted. A PR was opened for this - #52452, but Paul was not convinced it was the right fix, and #43888 might be required before having a full fix.

[bruvzg]

I don't think it is a regression from that PR, but I'm not sure.

Maybe it's not. Removing the condition from the allow_unicode_handling fixes it, and this line was introduced in #43663. So I assumed it is a regression. Also, it's not an issue in 3.x.

The only issue with the #52452 seems to be:

Note that if a shortcut consists of Ctrl + Alt + [some key used for a special character], the character input is handled AND the command associated to the shortcut is executed.

Not sure how to fix it, I guess the only option is to check all shortcuts and actions first and accept input only if there's no confliction one.

And I do not see any reason why would we need #43888 for this, it is good to have it, but at least on macOS both Alts work the same.

[setanarut]

Also there are illegal shortcuts for macOS (Godot 3.4.2 and alpha 3);
alt+1,alt+2,alt+3,alt+4 etc. ALT+... cannot be used for shortcuts other than text inputs. The ALT key is a key dedicated to text input.

[ZX48developer]

Still present in alpha 4. This could lead on less testing on mac os. Try to program without @#[]{}|
I'm using a old linux machine to test godot 4 because it's not usable on mac os

[slasktotten]

I just ran into this on alpha 4 as well.

[dcerjan]

Can confirm this also occurs on alpha 5 on Mac OS.