Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) Unicode support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) ===============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4) 		 Last update: 2005-01-17, version 1.4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) This file is maintained by H. Peter Anvin <unicode@lanana.org> as part
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) of the Linux Assigned Names And Numbers Authority (LANANA) project.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) The current version can be found at:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 	    http://www.lanana.org/docs/unicode/admin-guide/unicode.rst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) Introduction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) ------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) The Linux kernel code has been rewritten to use Unicode to map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) characters to fonts.  By downloading a single Unicode-to-font table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) both the eight-bit character sets and UTF-8 mode are changed to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) the font as indicated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) This changes the semantics of the eight-bit character tables subtly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) The four character tables are now:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) =============== =============================== ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) Map symbol	Map name			Escape code (G0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) =============== =============================== ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) LAT1_MAP	Latin-1 (ISO 8859-1)		ESC ( B
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) GRAF_MAP	DEC VT100 pseudographics	ESC ( 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) IBMPC_MAP	IBM code page 437		ESC ( U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) USER_MAP	User defined			ESC ( K
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) =============== =============================== ================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) In particular, ESC ( U is no longer "straight to font", since the font
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) might be completely different than the IBM character set.  This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) permits for example the use of block graphics even with a Latin-1 font
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) loaded.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) Note that although these codes are similar to ISO 2022, neither the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) codes nor their uses match ISO 2022; Linux has two 8-bit codes (G0 and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) G1), whereas ISO 2022 has four 7-bit codes (G0-G3).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) In accordance with the Unicode standard/ISO 10646 the range U+F000 to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) U+F8FF has been reserved for OS-wide allocation (the Unicode Standard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) refers to this as a "Corporate Zone", since this is inaccurate for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) Linux we call it the "Linux Zone").  U+F000 was picked as the starting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) point since it lets the direct-mapping area start on a large power of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) two (in case 1024- or 2048-character fonts ever become necessary).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) This leaves U+E000 to U+EFFF as End User Zone.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) [v1.2]: The Unicodes range from U+F000 and up to U+F7FF have been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) hard-coded to map directly to the loaded font, bypassing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) translation table.  The user-defined map now defaults to U+F000 to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) U+F0FF, emulating the previous behaviour.  In practice, this range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) might be shorter; for example, vgacon can only handle 256-character
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) (U+F000..U+F0FF) or 512-character (U+F000..U+F1FF) fonts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) Actual characters assigned in the Linux Zone
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) --------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) In addition, the following characters not present in Unicode 1.1.4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) have been defined; these are used by the DEC VT graphics map.  [v1.2]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) THIS USE IS OBSOLETE AND SHOULD NO LONGER BE USED; PLEASE SEE BELOW.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) ====== ======================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) U+F800 DEC VT GRAPHICS HORIZONTAL LINE SCAN 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) U+F801 DEC VT GRAPHICS HORIZONTAL LINE SCAN 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) U+F803 DEC VT GRAPHICS HORIZONTAL LINE SCAN 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) U+F804 DEC VT GRAPHICS HORIZONTAL LINE SCAN 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) ====== ======================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) The DEC VT220 uses a 6x10 character matrix, and these characters form
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) a smooth progression in the DEC VT graphics character set.  I have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) omitted the scan 5 line, since it is also used as a block-graphics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) character, and hence has been coded as U+2500 FORMS LIGHT HORIZONTAL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) [v1.3]: These characters have been officially added to Unicode 3.2.0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) they are added at U+23BA, U+23BB, U+23BC, U+23BD.  Linux now uses the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) new values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) [v1.2]: The following characters have been added to represent common
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) keyboard symbols that are unlikely to ever be added to Unicode proper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) since they are horribly vendor-specific.  This, of course, is an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) excellent example of horrible design.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) ====== ======================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) U+F810 KEYBOARD SYMBOL FLYING FLAG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) U+F811 KEYBOARD SYMBOL PULLDOWN MENU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) U+F812 KEYBOARD SYMBOL OPEN APPLE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) U+F813 KEYBOARD SYMBOL SOLID APPLE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) ====== ======================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) Klingon language support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) ------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) In 1996, Linux was the first operating system in the world to add
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) support for the artificial language Klingon, created by Marc Okrand
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) for the "Star Trek" television series.	This encoding was later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) adopted by the ConScript Unicode Registry and proposed (but ultimately
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) rejected) for inclusion in Unicode Plane 1.  Thus, it remains as a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) Linux/CSUR private assignment in the Linux Zone.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) This encoding has been endorsed by the Klingon Language Institute.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) For more information, contact them at:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	http://www.kli.org/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) Since the characters in the beginning of the Linux CZ have been more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) of the dingbats/symbols/forms type and this is a language, I have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) located it at the end, on a 16-cell boundary in keeping with standard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) Unicode practice.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .. note::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)   This range is now officially managed by the ConScript Unicode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)   Registry.  The normative reference is at:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	https://www.evertype.com/standards/csur/klingon.html
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) Klingon has an alphabet of 26 characters, a positional numeric writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) system with 10 digits, and is written left-to-right, top-to-bottom.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) Several glyph forms for the Klingon alphabet have been proposed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) However, since the set of symbols appear to be consistent throughout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) with only the actual shapes being different, in keeping with standard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) Unicode practice these differences are considered font variants.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ======	=======================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) U+F8D0	KLINGON LETTER A
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) U+F8D1	KLINGON LETTER B
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) U+F8D2	KLINGON LETTER CH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) U+F8D3	KLINGON LETTER D
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) U+F8D4	KLINGON LETTER E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) U+F8D5	KLINGON LETTER GH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) U+F8D6	KLINGON LETTER H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) U+F8D7	KLINGON LETTER I
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) U+F8D8	KLINGON LETTER J
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) U+F8D9	KLINGON LETTER L
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) U+F8DA	KLINGON LETTER M
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) U+F8DB	KLINGON LETTER N
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) U+F8DC	KLINGON LETTER NG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) U+F8DD	KLINGON LETTER O
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) U+F8DE	KLINGON LETTER P
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) U+F8DF	KLINGON LETTER Q
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	- Written <q> in standard Okrand Latin transliteration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) U+F8E0	KLINGON LETTER QH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	- Written <Q> in standard Okrand Latin transliteration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) U+F8E1	KLINGON LETTER R
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) U+F8E2	KLINGON LETTER S
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) U+F8E3	KLINGON LETTER T
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) U+F8E4	KLINGON LETTER TLH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) U+F8E5	KLINGON LETTER U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) U+F8E6	KLINGON LETTER V
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) U+F8E7	KLINGON LETTER W
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) U+F8E8	KLINGON LETTER Y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) U+F8E9	KLINGON LETTER GLOTTAL STOP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) U+F8F0	KLINGON DIGIT ZERO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) U+F8F1	KLINGON DIGIT ONE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) U+F8F2	KLINGON DIGIT TWO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) U+F8F3	KLINGON DIGIT THREE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) U+F8F4	KLINGON DIGIT FOUR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) U+F8F5	KLINGON DIGIT FIVE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) U+F8F6	KLINGON DIGIT SIX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) U+F8F7	KLINGON DIGIT SEVEN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) U+F8F8	KLINGON DIGIT EIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) U+F8F9	KLINGON DIGIT NINE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) U+F8FD	KLINGON COMMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) U+F8FE	KLINGON FULL STOP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) U+F8FF	KLINGON SYMBOL FOR EMPIRE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ======	=======================================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) Other Fictional and Artificial Scripts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) --------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) Since the assignment of the Klingon Linux Unicode block, a registry of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) fictional and artificial scripts has been established by John Cowan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) <jcowan@reutershealth.com> and Michael Everson <everson@evertype.com>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) The ConScript Unicode Registry is accessible at:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	  https://www.evertype.com/standards/csur/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) The ranges used fall at the low end of the End User Zone and can hence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) not be normatively assigned, but it is recommended that people who
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) wish to encode fictional scripts use these codes, in the interest of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) interoperability.  For Klingon, CSUR has adopted the Linux encoding.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) The CSUR people are driving adding Tengwar and Cirth into Unicode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) Plane 1; the addition of Klingon to Unicode Plane 1 has been rejected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) and so the above encoding remains official.