Date: Thu, 21 Nov 2024 22:09:47 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 280679] [termcap] [patch] bold colors broken in ncurses apps for xterm-256color Message-ID: <bug-280679-227-hTsxxUDfsP@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-280679-227@https.bugs.freebsd.org/bugzilla/> References: <bug-280679-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D280679 Jan Beich <jbeich@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bapt@FreeBSD.org --- Comment #5 from Jan Beich <jbeich@FreeBSD.org> --- (In reply to Cullum Smith from comment #4) > FreeBSD's terminfo seems to have a termcap compatibility layer ncurses in FreeBSD >=3D 14 enabled terminfo support (base 61f66a1f4403) but= due to POLA (backlash?) still uses homegrown termcap database by default. Users seeking advanced terminfo-only features (or Linux-style defaults) are expec= ted (base b75fb12b6827) to install misc/terminfo-db. CC @bapt as misc/terminfo-db looks barely documented anywhere. > special handling in 256-color mode. 0-7 are regular colors, compatible with vt100-color. 8-15 are bright colors, compatible with xterm-16color. >From xterm-256color source: # This implementation uses a 256-element color map where the first 16 entri= es # are shared with the aixterm-compatible colors (and in turn the first 8 are # shared with the ANSI colors). The three levels (256, 16, 8) account for = the # use of a conditional expression in setaf/setab which reduces the number of # characters sent to the screen for typical applications. >From xterm(1) manpage: boldColors (class ColorMode) Specifies whether to combine bold attribute with colors like the IBM PC, i.e., map colors 0 through 7 to colors 8 through 15. These normally are the brighter versions of the first 8 colors, hence bold. The default is "true". > setaf=3D\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m, terminfo(5) manpage explains the syntax. Basically, 0-7 colors use \E[3<arg= >m, 8-15 colors use \E[9<arg-8>m while the rest use \E[38;5;<arg>m $ tput setaf 6 | od -a 0000000 esc [ 3 6 m 0000005 $ tput setaf 14 | od -a 0000000 esc [ 9 6 m 0000005 $ tput setaf 22 | od -a 0000000 esc [ 3 8 ; 5 ; 2 2 m 0000012 --=20 You are receiving this mail because: You are the assignee for the bug.=
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