src/sys/teken/sequences, branch main

sys: Remove $FreeBSD$: one-line sh pattern

2023-08-16T17:54:58+00:00

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Implement ECMA-48 "REP", some Linuxen have started emitting them recently.

2018-10-21T08:29:36+00:00

Approved by:	ed

teken: Fix `sequences` header which was crossing the 80-col boundary

2018-05-29T08:41:44+00:00

Also, the commented line's columns for `DECID` were not re-aligned in
r334302.

Reported by:	bde

teken: Sort DECSCUSR alphabetically

2018-05-28T23:20:08+00:00

While here, align columns again.

Reported by:	bde

teken: Rename the "Set Cursor Style" sequence to match vt100.net docs

2018-05-21T20:35:16+00:00

This fixes inconsistencies with the rest of the `sequences` file.

No functional changes.

Requested by:	ed

teken, vt(4): Parse the "Cursor style" escape sequence

2018-05-20T14:21:20+00:00

The escape sequence (e.g. `^[[2 q`) was unsupported before and the
letter `q` was displayed as a typed character. The sequence is used by
Neovim for instance.

Now, it is properly parsed. However, it is ignored, so it won't change
the cursor style.

Because the escape sequence contains a space character, the
`gensequences` script had to be modified to support that. In the
`sequences` file, a space is represented as the string `SP`.

Fix syscons escape sequence for setting the local cursor type. This sequence

2017-08-18T15:40:40+00:00

was aliased to a vt sequence, causing and fixing various bugs.

For syscons, this restores support for arg 2 which sets blinking block
too forcefully, and restores bugs for arg 0 and 1.  Arg 2 is used for
vs in the cons25 entry in termcap, but I've never noticed an application
that uses this.  The bugs involve replacing local settings by global
ones and need better handling of defaults to fix.

For vt, this requires moving the aliasing code from teken to vt where
it belongs.  This sequences is very important for cons25 compatibility
in vt since it is used by the cons25 termcap entries for ve, vi and
vs.  vt can't properly support vs for either cons25 or xterm since it
doesn't support blinking.  For xterm, the termcap entry for vs asks
for something different using 12;25h instead of 25h.

Rename C25CURS for this to C25LCT and change its description to be closer
to echoing the old comment about it.  CURS is too generic.

Fix missing syscons escape sequence for setting the global cursor shape
(and type).  Only support this in syscons since vt can't emulate anything
in it.

Improve names for cons25 sequences.

2017-08-18T14:04:14+00:00

In a recent commit, I forgot to expand an X to an abbreviation of "BORDER".
Fix this and some nearby bad names.

The descriptions were copied from comments in scterm-sc.c, but some
of these are bad.  The border [color] was inconsistently described as
a property of the "display", but I had changed this to "adapter" to
match the descriptions for other color settings.  All colors supported
by the cons25 sequences are actually properties of the current vty and
that should not be described.  But the other colors are defaults.
Change "adapter" to "default" for them and remove "adapter" for the
border.  Reduce the verbosity of the abbreviation from AD to D.

Fix missing syscons escape sequence for setting the border color.

2017-08-18T10:38:49+00:00

Partially implement the mysterious cons25 \e[x escape sequence.

2010-11-05T00:56:21+00:00

It seems the terminfo library on some systems (OS X, Linux) may emit the
sequence \e[x to reset to default attributes. Apart from using the
zero-command, this escape sequence allows many more operations, such as
setting ANSI colors. I don't see this used anywhere, so this should be
sufficient for now.

This deficiency was spotted by the Debian GNU/kFreeBSD. They have their
own patch, which is slightly flawed in my opinion. I don't know why they
never reported this issue to us.

MFC after:	1 week