[Linuxconsole-dev] Here's the patch documentation I've put together

[Eric S. R. <es...@th...>]

This file describes the first console driver changes from the Linux Console
Project.  It applies to both the "Sapphire" patch for 2.2.x and the "Emerald"
patch for 2.3.x.

The second patch band changes fix the double off-by-one error which manifests
itself in the accordeon test from vttest.

The third band is a patch from linux-kernel: it has to do with wrongly
neglecting the intensity bit in certain operations.

The other patch bands make the following changes to the terminal emulation:

Code	Action		Changed in patch	Reason
------	---------------	------------------	----------------------------
\E[6m	blink		added			Support for ECMA-48
\E[ n k	VPB		added				:
\E[ n j	HPB		added				:
\E[ n I	CHT		added				:
\E[ n W	CTC		added (n=0, 2, 5)		:
\E[ n Y	CVT		added				:
\E[ n Z	CBT		added				:

0x84	IND		added			Supports VT220 8-bit mode
0x85	NEL		added				:
0x88	HTS		added				:
0x8d	RI		added				:

\E[?6n	DECXCPR		added			More exact VT100 emulation
\E[?15n	Printer status	added				:
\E[?25n	UDK status	added				:
\E[?26n	Keyboard status	added				:
\E[?75n	Data integrity	added				:
\E[x	DECREQTPARM	added				:

\E[21m	turn off 1	removed			Conflicts with ECMA-48

\E[s	DECRC		removed			Not in either VT100 or ECMA-48 
\E[u	DECSC		removed				:

All three removed capabilities are redundant with other escape
sequences supported by the driver (\E[22m, \E7, and \E8 respectively).
None are or have ever been used by the Linux terminfo/termcap entry.

Sizes:
  text	   data	    bss	    dec	    hex	filename
  23452	    332	   1028	  24812	   60ec	console.o (2.2.12 old)
  25036	    332	   1028	  26396	   671c	console.o (2.2.12 new)
-- 
		<a href="http://www.tuxedo.org/~esr">Eric S. Raymond</a>

Live free or die; death is not the worst of evils.
	-- General George Stark.