bug#48136: 28.0.50; [feature/pgtk] ISO_Level5_Shift broken

[Elia Nolz]

On Thu, May 20, 2021, at 13:02, Yuuki Harano wrote:

Key events are handled in key_press_event() in pgtkterm.c.

I think `keysym` contains a character code, which is already

interpreted.

I stepped through the code with gdb and watched the keysym values.

I observed the following values for keysym in this order when pressing "C-L3-i" (sends "C-{") (working case):

65507 (state goes to 4 --> state to 0 and modifiers to 4)

65027 (state becomes 132 --> modifiers becomes 132 and state 128)

123 (no changes to state and modifiers)

65515 (should be me using Super+o to switch workspaces in xmonad)

And these for the non working case "C-L3-n" (which sends "(" and should send "C-("):

65507 (state to 4 --> state to 0 and modifiers to 4)

65027 (both state and modifiers become 0)

65515

I was unable to get the keysym of the key itself in the non-working cases.

Used breakpoints in pgtkterm.c:

5669

5687

5701

5710

5731

5809

5860

5876

I sadly do not know enough C to understand why this happens. Does this help you at all? Any further information I could provide that would be helpful?