I serched my map and found no config part had Hyper for virtualModifier ,
but i found Hyper_R config in symbols <RTSH> in group 2,
after changed to Shift_R,
i can inser capital letter in emacs 29.

old: key <RTSH> { [ Shift_R, Shift_R, U2E9D] ,[ Hyper_R ] };
new: key <RTSH> { [ Shift_R, Shift_R, U2E9D] ,[ Shift_R ] };

I don't know why cause that,

since that is not belong parts of emacs,

I feel so sorry any where for this report let you be troubled.

Anyway, thanks you for your help.

Po Lu <luangruo@yahoo.com> 於 2022年4月15日週五上午12:49寫道：

bg.jheng@gmail.com writes:

> i also tried to comment out that you say this :
> else if (dpyinfo->xkb_desc->names->vmods[i] == dpyinfo->Xatom_Hyper)
> dpyinfo->hyper_mod_mask |= vmodmask;
>
> after rebuild,
> the capital letter can normally insert with shift now.
> hope it useful.

So something in your virtual modifier map is binding Shift to Hyper.
That's a bug in your setup, not in Emacs.

Thanks.