Thanks a lot! This solves my issue with 3 layouts, when i want to switch between 2 by default.
Here is my russian layuot with custom ukrainian symbols mapped:
// ra Russian (Ukraine) default partial alphanumeric_keys xkb_symbols "basic" { name[Group1]= "ra"; // Alphanumeric section key <AE01> { [ 1, exclam, bar ] }; key <AE02> { [ 2, quotedbl ] }; key <AE03> { [ 3, numerosign ] }; key <AE04> { [ 4, semicolon ] }; key <AE05> { [ 5, percent ] }; key <AE06> { [ 6, colon ] }; key <AE07> { [ 7, question ] }; key <AE08> { [ 8, asterisk, U20BD ] }; key <AE09> { [ 9, parenleft ] }; key <AE10> { [ 0, parenright ] }; key <AE11> { [ minus, underscore ] }; key <AE12> { [ equal, plus ] }; key <BKSL> { [ backslash, slash ,Ukrainian_ghe_with_upturn, Ukrainian_GHE_WITH_UPTURN ] }; key <AB10> { [ period, comma, apostrophe ] }; key <LSGT> { [ slash, bar ] }; key <TLDE> { [ Cyrillic_io, Cyrillic_IO ] }; key <AD01> { [ Cyrillic_shorti, Cyrillic_SHORTI ] }; key <AD02> { [ Cyrillic_tse, Cyrillic_TSE ] }; key <AD03> { [ Cyrillic_u, Cyrillic_U ] }; key <AD04> { [ Cyrillic_ka, Cyrillic_KA ] }; key <AD05> { [ Cyrillic_ie, Cyrillic_IE ] }; key <AD06> { [ Cyrillic_en, Cyrillic_EN ] }; key <AD07> { [ Cyrillic_ghe, Cyrillic_GHE ] }; key <AD08> { [ Cyrillic_sha, Cyrillic_SHA ] }; key <AD09> { [ Cyrillic_shcha, Cyrillic_SHCHA ] }; key <AD10> { [ Cyrillic_ze, Cyrillic_ZE ] }; key <AD11> { [ Cyrillic_ha, Cyrillic_HA ] }; key <AD12> { [ Cyrillic_hardsign, Cyrillic_HARDSIGN, Ukrainian_yi, Ukrainian_YI ] }; key <AC01> { [ Cyrillic_ef, Cyrillic_EF ] }; key <AC02> { [ Cyrillic_yeru, Cyrillic_YERU, Ukrainian_i, Ukrainian_I ] }; key <AC03> { [ Cyrillic_ve, Cyrillic_VE ] }; key <AC04> { [ Cyrillic_a, Cyrillic_A ] }; key <AC05> { [ Cyrillic_pe, Cyrillic_PE ] }; key <AC06> { [ Cyrillic_er, Cyrillic_ER ] }; key <AC07> { [ Cyrillic_o, Cyrillic_O ] }; key <AC08> { [ Cyrillic_el, Cyrillic_EL ] }; key <AC09> { [ Cyrillic_de, Cyrillic_DE ] }; key <AC10> { [ Cyrillic_zhe, Cyrillic_ZHE ] }; key <AC11> { [ Cyrillic_e, Cyrillic_E, Ukrainian_ie, Ukrainian_IE ] }; key <AB01> { [ Cyrillic_ya, Cyrillic_YA ] }; key <AB02> { [ Cyrillic_che, Cyrillic_CHE ] }; key <AB03> { [ Cyrillic_es, Cyrillic_ES ] }; key <AB04> { [ Cyrillic_em, Cyrillic_EM ] }; key <AB05> { [ Cyrillic_i, Cyrillic_I ] }; key <AB06> { [ Cyrillic_te, Cyrillic_TE ] }; key <AB07> { [ Cyrillic_softsign, Cyrillic_SOFTSIGN ] }; key <AB08> { [ Cyrillic_be, Cyrillic_BE ] }; key <AB09> { [ Cyrillic_yu, Cyrillic_YU ] }; // End alphanumeric section };