Appendix A. Default Symbol Transformations

Table of Contents

Interpreting the Control Modifier

If the Control modifier is not consumed by the symbol lookup process, routines that determine the symbol and string that correspond to an event should convert the symbol to a string as defined in the table below. Only the string to be returned is affected by the Control modifier; the symbol is not changed.

This table lists the decimal value of the standard control characters that correspond to some keysyms for ASCII characters. Control characters for symbols not listed in this table are application-specific.

Keysyms	Value	Keysyms	Value	Keysyms	Value	Keysyms	Value
atsign	0	h, H	8	p, P	16	x, X	24
a, A	1	i, I	9	q, Q	17	y, Y	25
b, B	2	j, J	10	r, R	18	z, Z	26
c, C	3	k, K	11	s, S	19	left_bracket	27
d, D	4	l, L	12	t, T	20	backslash	28
e, E	5	m, M	13	u, U	21	right_bracket	29
f, F	6	n, N	14	v, V	22	asciicircum	30
g, G	8	o, O	15	w, W	23	underbar	31

Interpreting the Lock Modifier

If the Lock modifier is not consumed by the symbol lookup process, routines that determine the symbol and string that correspond to an event should capitalize the result. Unlike the transformation for Control , the capitalization transformation changes both the symbol and the string returned by the event.

Locale-Sensitive Capitalization

If Lock is set in an event and not consumed, applications should capitalize the string and symbols that result from an event according to the capitalization rules in effect for the system on which the application is running, taking the current state of the user environment (e.g. locale) into account.

Locale-Insensitive Capitalization

XKB recommends but does not require locale-sensitive capitalization. In cases where the locale is unknown or where locale-sensitive capitalization is prohibitively expensive, applications can capitalize according to the rules defined in this extension.

The following tables list all of the keysyms for which XKB defines capitalization behavior. Any keysyms not explicitly listed in these tables are not capitalized by XKB when locale-insensitive capitalization is in effect and are not automatically assigned the ALPHABETIC type as described in the Alphabetic Key Type.

Capitalization Rules for Latin-1 Keysyms

This table lists the Latin-11 keysyms for which XKB defines upper and lower case:

Lower Case	Upper Case	Lower Case	Upper Case	Lower Case	Upper Case	Lower Case	Upper Case
a	A	o	O	acircumflex	Acircumflex	eth	ETH
b	B	p	P	adiaeresis	Adiaeresis	ntilde	Ntilde
c	C	q	Q	atilde	Atilde	ograve	Ograve
d	D	r	R	aring	Aring	oacute	Oacute
e	E	s	S	ae	AE	ocircumflex	Ocircumflex
f	F	t	T	ccedilla	Ccedilla	otilde	Otilde
g	G	u	U	egrave	Egrave	odiaeresis	Odiaeresis
h	H	v	V	eacute	Eacute	oslash	Ooblique
i	I	w	W	ecircumflex	Ecircumflex	ugrave	Ugrave
j	J	x	X	ediaeresis	Ediaeresis	uacute	Uacute
k	K	y	Y	igrave	Igrave	ucircumflex	Ucircumflex
l	L	z	Z	iacute	Iacute	udiaeresis	Udiaeresis
m	M	agrave	Agrave	icircumflex	Icircumflex	yacute	Yacute
n	N	aacute	Aacute	idiaeresis	Idiaeresis	thorn	THORN

Capitalization Rules for Latin-2 Keysyms

This table lists the Latin-2 keysyms for which XKB defines upper and lower case:

Lower Case	Upper Case	Lower Case	Upper Case	Lower Case	Upper Case
aogonek	Aogonek	zabovedot	Zabovedot	dstroke	Dstroke
lstroke	Lstroke	racute	Racute	nacute	Nacute
lcaron	Lcaron	abreve	Abreve	ncaron	Ncaron
sacute	Sacute	lacute	Lacute	odoubleacute	Odoubleacute
scaron	Scaron	cacute	Cacute	rcaron	Rcaron
scedilla	Scedilla	ccaron	Ccaron	uabovering	Uabovering
tcaron	Tcaron	eogonek	Eogonek	udoubleacute	Udoubleacute
zacute	Zacute	ecaron	Ecaron	tcedilla	Tcedilla
zcaron	Zcaron	dcaron	Dcaron

Capitalization Rules for Latin-3 Keysyms

This table lists the Latin-3 keysyms for which XKB defines upper and lower case:

Lower Case	Upper Case	Lower Case	Upper Case	Lower Case	Upper Case
hstroke	Hstroke	jcircumflex	Jcircumflex	gcircumflex	Gcircumflex
hcircumflex	Hcircumflex	cabovedot	Cabovedot	ubreve	Ubreve
idotless	Iabovedot	ccircumflex	Ccircumflex	scircumflex	Scircumflex
gbreve	Gbreve	gabovedot	Gabovedot

Capitalization Rules for Latin-4 Keysyms

This table lists the Latin-4 keysyms for which XKB defines upper and lower case:

Lower Case	Upper Case	Lower Case	Upper Case	Lower Case	Upper Case
rcedilla	Rcedilla	eng	ENG	omacron	Omacron
itilde	Itilde	amacron	Amacron	kcedilla	Kcedilla
lcedilla	Lcedilla	iogonek	Iogonek	uogonek	Uogonek
emacron	Emacron	eabovedot	eabovedot	utilde	Utilde
gcedilla	Gcedilla	imacron	Imacron	umacron	Umacron
tslash	Tslash	ncedilla	Ncedilla

Capitalization Rules for Cyrillic Keysyms

This table lists the Cyrillic keysyms for which XKB defines upper and lower case:

Lower Case	Upper Case	Lower Case	Upper Case
Serbian_dje	Serbian_DJE	Cyrillic_i	Cyrillic_I
Macedonia_gje	Macedonia_GJE	Cyrillic_shorti	Cyrillic_SHORTI
Cyrillic_io	Cyrillic_IO	Cyrillic_ka	Cyrillic_KA
Ukrainian_ie	Ukrainian_IE	Cyrillic_el	Cyrillic_EL
Macedonia_dse	Macedonia_DSE	Cyrillic_em	Cyrillic_EM
Ukrainian_i	Ukrainian_I	Cyrillic_en	Cyrillic_EN
Ukrainian_yi	Ukrainian_YI	Cyrillic_o	Cyrillic_O
Cyrillic_je	Cyrillic_JE	Cyrillic_pe	Cyrillic_PE
Cyrillic_lje	Cyrillic_LJE	Cyrillic_ya	Cyrillic_YA
Cyrillic_nje	Cyrillic_NJE	Cyrillic_er	Cyrillic_ER
Serbian_tshe	Serbian_TSHE	Cyrillic_es	Cyrillic_ES
Macedonia_kje	Macedonia_KJE	Cyrillic_te	Cyrillic_TE
Byelorussian_shortu	Byelorussian_SHORTU	Cyrillic_u	Cyrillic_U
Cyrillic_dzhe	Cyrillic_DZHE	Cyrillic_zhe	Cyrillic_ZHE
Cyrillic_yu	Cyrillic_YU	Cyrillic_ve	Cyrillic_VE
Cyrillic_a	Cyrillic_A	Cyrillic_softsign	Cyrillic_SOFTSIGN
Cyrillic_be	Cyrillic_BE	Cyrillic_yeru	Cyrillic_YERU
Cyrillic_tse	Cyrillic_TSE	Cyrillic_ze	Cyrillic_ZE
Cyrillic_de	Cyrillic_DE	Cyrillic_sha	Cyrillic_SHA
Cyrillic_ie	Cyrillic_IE	Cyrillic_e	Cyrillic_E
Cyrillic_ef	Cyrillic_EF	Cyrillic_shcha	Cyrillic_SHCHA
Cyrillic_ghe	Cyrillic_GHE	Cyrillic_che	Cyrillic_CHE
Cyrillic_ha	Cyrillic_HA	Cyrillic_hardsign	Cyrillic_HARDSIGN

Capitalization Rules for Greek Keysyms

This table lists the Greek keysyms for which XKB defines upper and lower case:

Lower Case	Upper Case	Lower Case	Upper Case
Greek_omegaaccent	Greek_OMEGAACCENT	Greek_iota	Greek_IOTA
Greek_alphaaccent	Greek_ALPHAACCENT	Greek_kappa	Greek_KAPPA
Greek_epsilonaccent	Greek_EPSILONACCENT	Greek_lamda	Greek_LAMDA
Greek_etaaccent	Greek_ETAACCENT	Greek_lambda	Greek_LAMBDA
Greek_iotaaccent	Greek_IOTAACCENT	Greek_mu	Greek_MU
Greek_iotadieresis	Greek_IOTADIERESIS	Greek_nu	Greek_NU
Greek_omicronaccent	Greek_OMICRONACCENT	Greek_xi	Greek_XI
Greek_upsilonaccent	Greek_UPSILONACCENT	Greek_omicron	Greek_OMICRON
Greek_upsilondieresis	Greek_UPSILONDIERESIS	Greek_pi	Greek_PI
Greek_alpha	Greek_ALPHA	Greek_rho	Greek_RHO
Greek_beta	Greek_BETA	Greek_sigma	Greek_SIGMA
Greek_gamma	Greek_GAMMA	Greek_tau	Greek_TAU
Greek_delta	Greek_DELTA	Greek_upsilon	Greek_UPSILON
Greek_epsilon	Greek_EPSILON	Greek_phi	Greek_PHI
Greek_zeta	Greek_ZETA	Greek_chi	Greek_CHI
Greek_eta	Greek_ETA	Greek_psi	Greek_PSI
Greek_theta	Greek_THETA	Greek_omega	Greek_OMEGA

Capitalization Rules for Other Keysyms

XKB defines no capitalization rules for symbols in any other set of keysyms provided by the consortium. Applications are free to apply additional rules for private keysyms or for other keysyms not covered by XKB.