256 colors broken under conhost

[mqudsi]

The default Windows conhost terminal under Windows 10 (with the new WSL linux subsystem) is intended to be a xterm-256color compatible terminal (incompatibilities are considered bugs and are patched quite responsively via their GitHub channel).

Neovim runs fine in 256 color mode under conhost. However, vis is not usable unless set change-256colors off is set.

This is what vis looks like out of the box (with lua) on conhost:

colortest-256 shows the following:

so 256 colors are functional. TERM is set to xterm-256color

[mqudsi]

This may not be a conhost issue. This is how connecting via putty to the vis under WSL instance appears:

Putty is also using TERM=x256-color, but it uses its own terminal emulator so conhost is not the issue.

[mqudsi]

The output of infocmp for the xterm-256color declaration. I'm sorry, but I don't know what I'm looking for here so I can't tell you if it's correct or not:

mqudsi@ZBook ~/r/fish-shell> infocmp
#       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#256, cols#80, it#8, lines#24, pairs#32767,
        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=^M,
        csr=\E[%i%p1%d;%p2%dr, cub=\E[%p1%dD, cub1=^H,
        cud=\E[%p1%dB, cud1=^J, 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=^J, 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=\177, 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, 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, rmir=\E[4l, rmkx=\E[?1l\E>, rmso=\E[27m,
        rmul=\E[24m, rs1=\Ec, 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, smir=\E[4h, smkx=\E[?1h\E=, smso=\E[7m,
        smul=\E[4m, tbc=\E[3g, u6=\E[%i%d;%dR, u7=\E[6n,
        u8=\E[?1;2c, u9=\E[c, vpa=\E[%i%p1%dd,

[casr]

As per #456 your terminal emulator says it supports ccc but appears it was lying :) Try another theme for now, e.g.:

$HOME/.config/vis/visrc.lua:

require('vis')

vis.events.subscribe(vis.events.INIT, function()
    vis:command('set theme default-16')
end)

[mqudsi]

Thanks, @casr. Bugged here: https://github.com/Microsoft/BashOnWindows/issues/2566

[mqudsi]

btw, I've been happily using base16-tomorrow-night which is very similar in spirit to my evening theme under neovim.

[martanne]

Closing as this seems to be a Windows Subsystem for Linux issue.

[gcoelho05]

Hey, I know this issue is already closed, but I seem to have the same problem on Artix Linux, running the st terminal (from suckless). Has anyone found a way to fix this?