Edit3: I think this is the upstream project that lexer changes apply to https://www.scintilla.org/Lexilla.html (https://www.scintilla.org/Lexilla.html)
I could be wrong.
Tim S.
IIRC, the zmm-reg problem is in GDB; so, test gdb does it work from the command line! If not, the go to a website that supports gdb to ask for help!
Tim S.
The panel inside the dialog is created in cpuregistersdlg.cpp, you can access it via DebuggerManager::GetCPURegistersDialog()
Updating is done by GdbCmd_InfoRegisters::ParseOutput() or GdbCmd_InfoRegisters::ParseOutputFromOR32gdbPort() in gdb_command.h, every register matching the reRegisters regex (in gdb_commands.h) should be shown.
([xyz]*mm[0-9]+)[[:blank:]]+(.*)