My understanding of xkb configuration files is that the type FOUR_LEVEL,
or its variants FOUR_LEVEL_ALPHABETIC and FOUR_LEVEL_SEMIALPHABETIC, allow
for programming characters at the 4th level. For example, the following
definition of my US keyboard,
partial alphanumeric_keys
xkb_symbols "us" {
include "nokia_vndr/rx-51(english_base)"
include "nokia_vndr/rx-51(arrows_4btns)"
name[Group1] = "U.S. English";
key.type[Group1] = "FOUR_LEVEL";
// 1. row
// 2. row
key <AC06> { [h, H, parenleft, bracketleft ] };
key <AC07> { [j, J, parenright, bracketright ] };
// 3. row
};
Ought to give me bracket chars when pressing Fn + Shift... but such is not
the case. The definitions behave rather as type THREE_LEVEL. The only
exception being when the character slotted at the 3rd level can be
shifted, in which case the upercase version of the char is output.
I tried using the type FOUR_LEVEL_SEMIALPHABETIC but no change.
Is there a problem as to how I am interpreting the use of the LEVEL
types... or is it the case that the hildon layer code is enforcing this
observed THREE_LEVEL behaviour?
--denis
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