Qt vs #repeat

For Qt's extended command selector, gray out the button for "repeat"
because picking it just causes the '#' command that led to that to
be repeated, bringing the extended command selector up again.

It can be chosen by typing "rep" but at each keystroke the grayed
out button is visible so having that behave differently from what
was probably expected should not come as a surprise.

win/Qt/qt_xcmd.cpp

@@ -302,6 +302,13 @@ NetHackQtExtCmdRequestor::NetHackQtExtCmdRequestor(QWidget *parent) :
             pb->setMaximumSize(pb->minimumSize());
             // i+butoffset is value that will be passed to the click handler
             group->addButton(pb, i + butoffset);
+            // gray out "repeat" because picking it would just repeat the "#"
+            // that caused us to be called rather than whatever came before;
+            // it can still be chosen by typing "rep" but appears grayed out
+            // while in the process so having it not behave usefully shouldn't
+            // come as much of a surprise
+            if (btn_lbl == "repeat")
+                pb->setEnabled(false);
             /*
              * by column: xcmd_by_row==false, the default
              *  0..R-1 down first column, R..2*R-1 down second column, ...