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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2016-09-23 16:14:29 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-10-24 08:12:35 -0200
commit77514391ee1af3adaa33219109d2ca81fc09e30e (patch)
treee8b5f35cd439cce060bc7109445ebcf23367fe25 /Documentation/unicode.txt
parentc8956bb7dd9525bba4155bf5a09022f036224b3c (diff)
downloadlinux-77514391ee1af3adaa33219109d2ca81fc09e30e.tar.bz2
Documentation/unicode.txt: convert it to ReST markup
Probably, unicode is something that we might remove from the docs, as all modern systems support it. Yet, this chapter is fun, as it mentions support for the Klington fictional charset ;) On the other hand, I bet all other OS user manuals explicit mention unicode support. So, convert it to ReST and include it at the user's book. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/unicode.txt')
-rw-r--r--Documentation/unicode.txt22
1 files changed, 18 insertions, 4 deletions
diff --git a/Documentation/unicode.txt b/Documentation/unicode.txt
index 4a33f81cadb1..012e8e895842 100644
--- a/Documentation/unicode.txt
+++ b/Documentation/unicode.txt
@@ -1,3 +1,6 @@
+Unicode support
+===============
+
Last update: 2005-01-17, version 1.4
This file is maintained by H. Peter Anvin <unicode@lanana.org> as part
@@ -6,7 +9,8 @@ The current version can be found at:
http://www.lanana.org/docs/unicode/unicode.txt
- ------------------------
+Introdution
+-----------
The Linux kernel code has been rewritten to use Unicode to map
characters to fonts. By downloading a single Unicode-to-font table,
@@ -16,12 +20,14 @@ the font as indicated.
This changes the semantics of the eight-bit character tables subtly.
The four character tables are now:
+=============== =============================== ================
Map symbol Map name Escape code (G0)
-
+=============== =============================== ================
LAT1_MAP Latin-1 (ISO 8859-1) ESC ( B
GRAF_MAP DEC VT100 pseudographics ESC ( 0
IBMPC_MAP IBM code page 437 ESC ( U
USER_MAP User defined ESC ( K
+=============== =============================== ================
In particular, ESC ( U is no longer "straight to font", since the font
might be completely different than the IBM character set. This
@@ -55,10 +61,12 @@ In addition, the following characters not present in Unicode 1.1.4
have been defined; these are used by the DEC VT graphics map. [v1.2]
THIS USE IS OBSOLETE AND SHOULD NO LONGER BE USED; PLEASE SEE BELOW.
+====== ======================================
U+F800 DEC VT GRAPHICS HORIZONTAL LINE SCAN 1
U+F801 DEC VT GRAPHICS HORIZONTAL LINE SCAN 3
U+F803 DEC VT GRAPHICS HORIZONTAL LINE SCAN 7
U+F804 DEC VT GRAPHICS HORIZONTAL LINE SCAN 9
+====== ======================================
The DEC VT220 uses a 6x10 character matrix, and these characters form
a smooth progression in the DEC VT graphics character set. I have
@@ -74,10 +82,12 @@ keyboard symbols that are unlikely to ever be added to Unicode proper
since they are horribly vendor-specific. This, of course, is an
excellent example of horrible design.
+====== ======================================
U+F810 KEYBOARD SYMBOL FLYING FLAG
U+F811 KEYBOARD SYMBOL PULLDOWN MENU
U+F812 KEYBOARD SYMBOL OPEN APPLE
U+F813 KEYBOARD SYMBOL SOLID APPLE
+====== ======================================
Klingon language support
------------------------
@@ -99,8 +109,10 @@ of the dingbats/symbols/forms type and this is a language, I have
located it at the end, on a 16-cell boundary in keeping with standard
Unicode practice.
-NOTE: This range is now officially managed by the ConScript Unicode
-Registry. The normative reference is at:
+.. note::
+
+ This range is now officially managed by the ConScript Unicode
+ Registry. The normative reference is at:
http://www.evertype.com/standards/csur/klingon.html
@@ -112,6 +124,7 @@ However, since the set of symbols appear to be consistent throughout,
with only the actual shapes being different, in keeping with standard
Unicode practice these differences are considered font variants.
+====== =======================================================
U+F8D0 KLINGON LETTER A
U+F8D1 KLINGON LETTER B
U+F8D2 KLINGON LETTER CH
@@ -155,6 +168,7 @@ U+F8F9 KLINGON DIGIT NINE
U+F8FD KLINGON COMMA
U+F8FE KLINGON FULL STOP
U+F8FF KLINGON SYMBOL FOR EMPIRE
+====== =======================================================
Other Fictional and Artificial Scripts
--------------------------------------