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Add a new keysym type KT_CSI that generates CSI tilde sequences with
automatic modifier encoding. The keysym value encodes the CSI parameter
number, producing sequences like ESC [ <value> ~ or ESC [ <value> ; <mod> ~
when Shift, Alt, or Ctrl modifiers are held.
This allows navigation keys (Home, End, Insert, Delete, PgUp, PgDn) and
function keys to generate modifier-aware escape sequences without
consuming string table entries for each modifier combination.
Define key symbols for navigation keys (K_CSI_HOME, K_CSI_END, etc.)
and function keys (K_CSI_F1 through K_CSI_F20) using standard xterm
CSI parameter values.
The modifier encoding follows the xterm convention:
mod = 1 + (shift ? 1 : 0) + (alt ? 2 : 0) + (ctrl ? 4 : 0)
Allowed CSI parameter values range from 0 to 99.
Note: The Linux console historically uses a non-standard double-bracket
format for F1-F5 (ESC [ [ A through ESC [ [ E) rather than the xterm
tilde format (ESC [ 11 ~ through ESC [ 15 ~). The K_CSI_F1 through
K_CSI_F5 definitions use the xterm format. Converting F1-F5 to KT_CSI
would require updating the "linux" terminfo entry to match. Navigation
keys and F6-F20 already use the tilde format and are fully compatible.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Link: https://patch.msgid.link/20260203045457.1049793-3-nico@fluxnic.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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KT_LETTER was numerically missorted. So sort all KT_* entries.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20201029113222.32640-4-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This completes dead keys definitions for internationalization
completeness on the console. The representatives have been chosen
coherently with libx11 compose sequences, which avoid symetry conflicts
(e.g. there is U with caron, but no c with breve).
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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license
Many user space API headers are missing licensing information, which
makes it hard for compliance tools to determine the correct license.
By default are files without license information under the default
license of the kernel, which is GPLV2. Marking them GPLV2 would exclude
them from being included in non GPLV2 code, which is obviously not
intended. The user space API headers fall under the syscall exception
which is in the kernels COPYING file:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
otherwise syscall usage would not be possible.
Update the files which contain no license information with an SPDX
license identifier. The chosen identifier is 'GPL-2.0 WITH
Linux-syscall-note' which is the officially assigned identifier for the
Linux syscall exception. SPDX license identifiers are a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
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