Ssh behaving weird from Mac to linux.

[limonoct]

Hi,

After following the steps to set up SSH (infocmp -x | ssh YOUR-SERVER -- tic -x -), I encountered some peculiar issues when connecting to my Linux host from my Mac. While the terminal displayed the correct colors, the behavior was strange. For instance, pressing the backspace key in the terminal would result in a space instead of a backspace. Additionally, when executing commands like “ls,” it would print “lsls” instead of the expected “ls.”

Furthermore, the prompt format (p10k) appeared to be incorrect, lacking color support.

Here’s an example of the issue when I executed “ls” (notice how it displays lsls, and the prompt arrow do not have color):

To resolve these issues, I implemented a workaround by adding the “xterm-256color” option to my SSH configuration. This modification resulted in normal behavior, and the prompt functioned as expected. However, the colors were slightly different.

Here’s an example of the prompt with the “xterm-256color” option (notice the blue colors are different):

For reference, here’s how the prompt should look (this is on my mac):

any workaround?

Thanks!

[TApplencourt]

Oh, I have exactly the same "delete as space" as you!

The export TERM=xterm-256color fixed the issue for me. Thanks!

[Lira-tron]

For me too, just the colors now are different

[feekApp]

Hi,

thats because on your server does not recognize xterm-ghostty,
see: https://ghostty.org/docs/help/terminfo#ssh

use as fallback in your .ssh-config as last lines:

# .ssh/config
Host *
  SetEnv TERM=xterm-256color

[limonoct]

so, in the linux machine it is actually getting installed

infocmp ghostty

Reconstructed via infocmp from file: /home/linuxbrew/.linuxbrew/Cellar/ncurses/6.5/share/terminfo/g/ghostty

xterm-ghostty|ghostty|Ghostty,
am, bce, ccc, hs, km, mc5i, mir, msgr, npc, xenl,
colors#0x100, cols#80, it#8, lines#24, pairs#0x7fff,
acsc=++,,--..00``aaffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
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, dsl=\E]2;\007, ech=\E[%p1%dX,
ed=\E[J, el=\E[K, el1=\E[1K, flash=\E[?5h$<100/>\E[?5l,
fsl=^G, home=\E[H, hpa=\E[%i%p1%dG, ht=^I, hts=\EH,
ich=\E[%p1%d@, ich1=\E[@, 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, 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, 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[<, knp=\E[6~, kpp=\E[5~,
kri=\E[1;2A, oc=\E]104\007, op=\E[39;49m, rc=\E8,
rep=%p1%c\E[%p2%{1}%-%db, 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=\E]\E\\Ec, 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%;%?%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, tsl=\E]2;, u6=\E[%i%d;%dR, u7=\E[6n,
u8=\E[?%[;0123456789]c, u9=\E[c, vpa=\E[%i%p1%dd,

[limonoct]

however the path is /home/linuxbrew/.linuxbrew/Cellar/ncurses/6.5/share/terminfo/g/ghostty, if I look in /usr/share/terminfo/x/, it is not there,
could this be related?

[edrozenberg]

Maybe, try putting it in /usr/share. Linux brew is beyond my experience.

[dgl]

I suspect you've got a mix of programs using the system ncurses and the brew installed one, so it will work for tools built against the brew version, but not the system one. As @edrozenberg says putting it in the system location in /usr/share will work, but this is a bit confusing as you'll have to install it twice.

Better IMO would be to use a command which calls the system tic directly: infocmp -x | ssh YOUR-SERVER -- /usr/bin/tic -x - this will use the system version of tic, which will then find it can't write to /usr/share and install it in ~/.terminfo which both instances of ncurses will pick up.

(This happens because the home/linuxbrew installation location is writable to your normal user in its standard install, breaking an assumption tic makes about whether it should install in the system or home directory location based on which user runs it.)

[Lira-tron]

This worked!! Thanks @dgl!!

[jpoley]

when i ssh from mac 15.2 to linux (ubuntu 22.04 LTS) via ssh, i get double text.. when typing ls i get lsls (but command works), its just the local echo, is this something I have to set differently ?

[dgl]

@jpoley make sure you have the terminfo definition per https://ghostty.org/docs/help/terminfo#ssh