I don't quite understand XTerm's (UXTerm's in this case) behaviour regarding colors. I'm using Solarized Light color theme for Alacritty and UXTerm. They're more or less identical:
~/.alacritty.yml
:
# Colors (Solarized Light)
colors:
# Default colors
primary:
background: '0xfdf6e3'
foreground: '0x586e75'
# Normal colors
normal:
black: '0x073642'
red: '0xdc322f'
green: '0x859900'
yellow: '0xb58900'
blue: '0x268bd2'
magenta: '0xd33682'
cyan: '0x2aa198'
white: '0xeee8d5'
# Bright colors
bright:
black: '0x002b36'
red: '0xcb4b16'
green: '0x586e75'
yellow: '0x657b83'
blue: '0x839496'
magenta: '0x6c71c4'
cyan: '0x93a1a1'
white: '0xfdf6e3'
~/.Xresources
:
#define S_base03 #002b36
#define S_base02 #073642
#define S_base01 #586e75
#define S_base00 #657b83
#define S_base0 #839496
#define S_base1 #93a1a1
#define S_base2 #eee8d5
#define S_base3 #fdf6e3
#define S_yellow #b58900
#define S_orange #cb4b16
#define S_red #dc322f
#define S_magenta #d33682
#define S_violet #6c71c4
#define S_blue #268bd2
#define S_cyan #2aa198
#define S_green #859900
!fonts&stuff
UXTerm*faceSize: 11
uxterm*eightBitInput: false
UXTerm*faceName: Fira Mono Regular
!Background & foreground
UXTerm*background: S_base3
UXTerm*foreground: S_base00
UXTerm*fading: 40
UXTerm*fadeColor: S_base3
UXTerm*cursorColor: S_base01
UXTerm*pointerColorBackground: S_base1
UXTerm*pointerColorForeground: S_base01
!UXTerm*borderColor: #343434
!Turning off scrollbar
UXTerm*scrollBar: off
!Starting up with a geometry
UXTerm*vt100*geometry: 160x50
!Colors
!-------------------------
!black
UXTerm*color0: S_base02
UXTerm*color8: S_base03
!red
UXTerm*color1: S_red
UXTerm*color9: S_orange
!green
UXTerm*color2: S_green
UXTerm*color10: S_base01
!yellow
UXTerm*color3: S_yellow
UXTerm*color11: S_base00
!blue
UXTerm*color4: S_blue
UXTerm*color12: S_base0
!magenta
UXTerm*color5: S_magenta
UXTerm*color13: S_violet
!cyan
UXTerm*color6: S_cyan
UXTerm*color14: S_base1
!white
UXTerm*color7: S_base2
UXTerm*color15: S_base3
Alacritty session:
trueneu@pop-os:~$ env | grep TERM
COLORTERM=truecolor
TERM=xterm-256color
UXTerm session:
trueneu@pop-os:~$ env | grep TERM
COLORTERM=truecolor
XTERM_VERSION=XTerm(353)
XTERM_SHELL=/bin/bash
XTERM_LOCALE=en_US.UTF-8
TERM=xterm-256color
But they show completely different behaviours color-wise:
Alacritty:
UXTerm:
Though all is fine in emacs:
Alacritty:
UXTerm:
Both pass this test I've found:
#!/usr/bin/env bash
awk 'BEGIN{
s="/\\/\\/\\/\\/\\"; s=s s s s s s s s;
for (colnum = 0; colnum<77; colnum++) {
r = 255-(colnum*255/76);
g = (colnum*510/76);
b = (colnum*255/76);
if (g>255) g = 510-g;
printf "\033[48;2;%d;%d;%dm", r,g,b;
printf "\033[38;2;%d;%d;%dm", 255-r,255-g,255-b;
printf "%s\033[0m", substr(s,colnum+1,1);
}
printf "\n";
}'
Alacritty:
UXTerm:
The prompt:
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
Same with ls
colors.
UXTerm's infocmp
, if it helps:
Reconstructed via infocmp from file: /lib/terminfo/x/xterm-256color
xterm-256color|xterm with 256 colors,
am, bce, ccc, km, mc5i, mir, msgr, npc, xenl,
colors#0x100, cols#80, it#8, lines#24, pairs#0x10000,
acsc=``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
bel=^G, blink=\E[5m, bold=\E[1m, cbt=\E[Z, civis=\E[?25l,
clear=\E[H\E[2J, cnorm=\E[?12l\E[?25h, cr=\r,
csr=\E[%i%p1%d;%p2%dr, cub=\E[%p1%dD, cub1=^H,
cud=\E[%p1%dB, cud1=\n, cuf=\E[%p1%dC, cuf1=\E[C,
cup=\E[%i%p1%d;%p2%dH, cuu=\E[%p1%dA, cuu1=\E[A,
cvvis=\E[?12;25h, dch=\E[%p1%dP, dch1=\E[P, dim=\E[2m,
dl=\E[%p1%dM, dl1=\E[M, ech=\E[%p1%dX, ed=\E[J, el=\E[K,
el1=\E[1K, flash=\E[?5h$<100/>\E[?5l, home=\E[H,
hpa=\E[%i%p1%dG, ht=^I, hts=\EH, ich=\E[%p1%d@,
il=\E[%p1%dL, il1=\E[L, ind=\n, indn=\E[%p1%dS,
initc=\E]4;%p1%d;rgb\:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\,
invis=\E[8m, is2=\E[!p\E[?3;4l\E[4l\E>, kDC=\E[3;2~,
kEND=\E[1;2F, kHOM=\E[1;2H, kIC=\E[2;2~, kLFT=\E[1;2D,
kNXT=\E[6;2~, kPRV=\E[5;2~, kRIT=\E[1;2C, kb2=\EOE, kbs=^?,
kcbt=\E[Z, kcub1=\EOD, kcud1=\EOB, kcuf1=\EOC, kcuu1=\EOA,
kdch1=\E[3~, kend=\EOF, kent=\EOM, kf1=\EOP, kf10=\E[21~,
kf11=\E[23~, kf12=\E[24~, kf13=\E[1;2P, kf14=\E[1;2Q,
kf15=\E[1;2R, kf16=\E[1;2S, kf17=\E[15;2~, kf18=\E[17;2~,
kf19=\E[18;2~, kf2=\EOQ, kf20=\E[19;2~, kf21=\E[20;2~,
kf22=\E[21;2~, kf23=\E[23;2~, kf24=\E[24;2~,
kf25=\E[1;5P, kf26=\E[1;5Q, kf27=\E[1;5R, kf28=\E[1;5S,
kf29=\E[15;5~, kf3=\EOR, kf30=\E[17;5~, kf31=\E[18;5~,
kf32=\E[19;5~, kf33=\E[20;5~, kf34=\E[21;5~,
kf35=\E[23;5~, kf36=\E[24;5~, kf37=\E[1;6P, kf38=\E[1;6Q,
kf39=\E[1;6R, kf4=\EOS, kf40=\E[1;6S, kf41=\E[15;6~,
kf42=\E[17;6~, kf43=\E[18;6~, kf44=\E[19;6~,
kf45=\E[20;6~, kf46=\E[21;6~, kf47=\E[23;6~,
kf48=\E[24;6~, kf49=\E[1;3P, kf5=\E[15~, kf50=\E[1;3Q,
kf51=\E[1;3R, kf52=\E[1;3S, kf53=\E[15;3~, kf54=\E[17;3~,
kf55=\E[18;3~, kf56=\E[19;3~, kf57=\E[20;3~,
kf58=\E[21;3~, kf59=\E[23;3~, kf6=\E[17~, kf60=\E[24;3~,
kf61=\E[1;4P, kf62=\E[1;4Q, kf63=\E[1;4R, kf7=\E[18~,
kf8=\E[19~, kf9=\E[20~, khome=\EOH, kich1=\E[2~,
kind=\E[1;2B, kmous=\E[M, knp=\E[6~, kpp=\E[5~,
kri=\E[1;2A, mc0=\E[i, mc4=\E[4i, mc5=\E[5i, meml=\El,
memu=\Em, oc=\E]104\007, op=\E[39;49m, rc=\E8, rev=\E[7m,
ri=\EM, rin=\E[%p1%dT, ritm=\E[23m, rmacs=\E(B,
rmam=\E[?7l, rmcup=\E[?1049l\E[23;0;0t, rmir=\E[4l,
rmkx=\E[?1l\E>, rmm=\E[?1034l, rmso=\E[27m, rmul=\E[24m,
rs1=\Ec\E]104\007, rs2=\E[!p\E[?3;4l\E[4l\E>, sc=\E7,
setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m,
setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m,
sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p5%t;2%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,
sgr0=\E(B\E[m, sitm=\E[3m, smacs=\E(0, smam=\E[?7h,
smcup=\E[?1049h\E[22;0;0t, smir=\E[4h, smkx=\E[?1h\E=,
smm=\E[?1034h, smso=\E[7m, smul=\E[4m, tbc=\E[3g,
u6=\E[%i%d;%dR, u7=\E[6n, u8=\E[?%[;0123456789]c,
u9=\E[c, vpa=\E[%i%p1%dd,
Am I missing some configuration here? Is this how XTerm works? I don't really understand how's it capable of passing that test though.
EDIT:
After Thomas Dickey's answer, I've indeed tried to redefine .Xresources to be without C preprocessor #define
s. Here's the result:
!fonts&stuff
UXTerm*faceSize: 11
uxterm*eightBitInput: false
UXTerm*faceName: Fira Mono Regular
!Background & foreground
UXTerm*background: #fdf6e3
UXTerm*foreground: #657b83
UXTerm*fading: 40
UXTerm*fadeColor: #fdf6e3
UXTerm*cursorColor: #586e75
UXTerm*pointerColorBackground: #93a1a1
UXTerm*pointerColorForeground: #586e75
!UXTerm*borderColor: #343434
!Turning off scrollbar
UXTerm*scrollBar: off
!Starting up with a geometry
UXTerm*vt100*geometry: 160x50
!Colors
!-------------------------
!black
UXTerm*color0: #073642
UXTerm*color8: #002b36
!red
UXTerm*color1: #dc322f
UXTerm*color9: #cb4b16
!green
UXTerm*color2: #859900
UXTerm*color10: #586e75
!yellow
UXTerm*color3: #b58900
UXTerm*color11: #657b83
!blue
UXTerm*color4: #268bd2
UXTerm*color12: #839496
!magenta
UXTerm*color5: #d33682
UXTerm*color13: #6c71c4
!cyan
UXTerm*color6: #2aa198
UXTerm*color14: #93a1a1
!white
UXTerm*color7: #eee8d5
UXTerm*color15: #fdf6e3
Loaded the settings without -merge
just to be sure:
xrdb ~/.Xresources
And launched UXTerm:
EDIT2: Forgot to mention one (probably relevant) detail: if I get rid of the color scheme whatsoever, UXTerm starts to show colors at least resembling Alacritty's:
So the direction is kinda correct. But it's plain unusable to me in this state.