src/usr.bin/backlight/backlight.c, branch releng/14.3

Remove $FreeBSD$: two-line .h pattern

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

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

2023-05-12T16:44:03+00:00

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix

backlight(8): Update usage() to match the manual page

2022-07-19T14:56:27+00:00

MFC after:	1 week

backlight: Remove set but not used variable

2022-03-18T09:03:55+00:00

backlight: Fix incr/decr with percent value of 0

2021-03-03T07:57:35+00:00

This now does nothing instead of incr/decr by 10%

MFC After:    3 days
PR: 	      253736

backlight: check the lenght if the input before trimming '%'

2020-10-06T08:18:09+00:00

Reported by:	hps
Reviewed by:	manu
Differential Revision:	https://reviews.freebsd.org/D26693

backlight: accept '%' in the brightness input value

2020-10-06T08:05:19+00:00

Improve friendlyness of the command line by accepting the percent brightness
in both format: with or without a trailing '%'

Reviewed by:	manu
Differential Revision:	https://reviews.freebsd.org/D26692

Add backlight(8)

2020-10-02T18:21:30+00:00

This tool is used to configure registered backlights.
It can incr/decr (default to 10%) or accept a percentage value directly.

Reviewed by:	manpages (gbe@)
Relnotes:	yes
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D26251