# Report bugs and new terminal descriptions to
# bug-ncurses@gnu.org
#
-# $Revision: 1.790 $
-# $Date: 2020/04/26 00:38:36 $
+# $Revision: 1.795 $
+# $Date: 2020/05/02 23:39:49 $
#
# The original header is preserved below for reference. It is noted that there
# is a "newer" version which differs in some cosmetic details (but actually
# (but nonstandard) SGR 21, which was supported in the Linux console since 1992
# as an equivalent for SGR 22. Long after (early 2018), someone modified the
# console driver to make it ignore SGR 21 because the ECMA-48 standard
-# suggested a different use for that particular code.
+# suggested a different use for that particular code:
+#
+# https://github.com/torvalds/linux/commit/65d9982d7e523a1a8e7c9af012da0d166f72fc56#diff-7da3c215d12c9f6b88e1a37d38b116f0
+#
+# Two years later, someone (unfamiliar with ECMA-48 this time) documented it:
+#
+# https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/commit/man4/console_codes.4?id=a133a6bc03d751a424fe0a4adea2198757599615
+#
+# For background, refer to the report on bug-ncurses:
+#
+# https://lists.gnu.org/archive/html/bug-ncurses/2019-10/msg00059.html
linux-16color|linux console with 16 colors,
colors#16, ncv#42, pairs#0x100,
setab=\E[4%p1%{8}%m%d%?%p1%{7}%>%t;5%e;25%;m,
# for numeric capabilities provided in ncurses 6.1:
xterm+direct2|xterm with direct-color indexing,
RGB,
- colors#0x1000000, pairs#0x10000,
+ colors#0x1000000, pairs#0x10000, CO#8,
initc@, op=\E[39;49m,
setab=\E[%?%p1%{8}%<%t4%p1%d%e48\:2\:%p1%{65536}%/%d\:%p1
%{256}%/%{255}%&%d\:%p1%{255}%&%d%;m,
# identifier" parameter. This version provides for that parameter:
xterm+direct|xterm with direct-color indexing,
RGB,
- colors#0x1000000, pairs#0x10000,
+ colors#0x1000000, pairs#0x10000, CO#8,
initc@, op=\E[39;49m,
setab=\E[%?%p1%{8}%<%t4%p1%d%e48\:2\:\:%p1%{65536}%/%d\:%p1
%{256}%/%{255}%&%d\:%p1%{255}%&%d%;m,
nsterm-direct|nsterm with direct-color indexing,
use=xterm+indirect, use=nsterm,
-# As for others:
+# As for others (commenting at the time of release for ncurses 6.1):
# + Apple's Terminal.app does not recognize either form of the direct-color
# sequences.
# + Cygwin's mintty recognizes xterm's original implementation, does okay with
# + terminology 0.91 recognizes xterm's original implementation, but does
# nothing useful with it.
+# Other variants are possible, e.g., by using more of xterm's indexed color
+# palette, though the intrusion of indexed colors on the direct-color space
+# would be more noticeable.
+
+xterm+direct16|xterm with direct-color indexing,
+ CO#16,
+ setab=\E[%?%p1%{8}%<%t4%p1%d%e%?%p1%{16}%<%t%p1%{92}%+%e48\:
+ 2\:\:%p1%{65536}%/%d\:%p1%{256}%/%{255}%&%d\:%p1%{255}
+ %&%d%;%;m,
+ setaf=\E[%?%p1%{8}%<%t3%p1%d%e%?%p1%{16}%<%t%p1%'R'%+%e38\:2
+ \:\:%p1%{65536}%/%d\:%p1%{256}%/%{255}%&%d\:%p1%{255}
+ %&%d%;%;m,
+ setb@, setf@, use=xterm+direct,
+
+xterm-direct16|xterm with direct-colors and 16 indexed colors,
+ use=xterm, use=xterm+direct16,
+
+xterm+direct256|xterm with direct-color indexing,
+ CO#0x100,
+ setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e%?
+ %p1%{256}%<%t48;5;%p1%d%e48\:2\:\:%p1%{65536}%/%d\:%p1
+ %{256}%/%{255}%&%d\:%p1%{255}%&%d%;%;m,
+ setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e%?
+ %p1%{256}%<%t38;5;%p1%d%e38\:2\:\:%p1%{65536}%/%d\:%p1
+ %{256}%/%{255}%&%d\:%p1%{255}%&%d%;%;m,
+ setb@, setf@, use=xterm+direct,
+
+xterm-direct256|xterm with direct-colors and 256 indexed colors,
+ use=xterm, use=xterm+direct256,
+
#### XTERM Features
# This chunk is based on suggestions by Ailin Nemui and Nicholas Marriott, who
# This was implemented for the Hurd.
# rmxx/smxx describes the ECMA-48 strikeout/crossed-out attributes, as an
# experimental feature of tmux.
+# CO gives the number of indexed ("ANSI") colors which overlay an RGB color
+# space.
# E3 clears the terminal's scrollback buffer. This was implemented in the
# Linux 3.0 kernel as a security feature. It matches a feature which was
# added in xterm patch #107.
# 2020-04-25
# + use vt100+fnkeys in putty -TD
#
+# 2020-05-02
+# + add details on the change to Linux SGR 21 in 2018 -TD
+# + add xterm-direct16 and xterm-direct256 -TD
+#
######## SHANTIH! SHANTIH! SHANTIH!