ssh kitten: Fix non-standard properties in terminfo such as the ones used for true color not being copied

docs/changelog.rst

@@ -93,6 +93,9 @@ To update |kitty|, :doc:`follow the instructions <binary>`.
 - Remote control: Allow matching tabs by index number in currently active OS
   Window (:iss:`3708`)
 
+- ssh kitten: Fix non-standard properties in terminfo such as the ones used for
+  true color not being copied (:iss:`312`)
+
 
 0.20.3 [2021-05-06]
 ----------------------

docs/faq.rst

@@ -64,7 +64,7 @@ server, use the following one-liner instead (it
 is slower as it needs to ssh into the server twice, but will work with most
 servers)::
 
-    infocmp xterm-kitty | ssh myserver tic -x -o \~/.terminfo /dev/stdin
+    infocmp -a xterm-kitty | ssh myserver tic -x -o \~/.terminfo /dev/stdin
 
 If you are behind a proxy (like Balabit) that prevents this, you must redirect the
 1st command to a file, copy that to the server and run ``tic`` manually.  If you

kittens/ssh/main.py

@@ -211,7 +211,7 @@ def main(args: List[str]) -> NoReturn:
     else:
         hostname, remote_args = server_args[0], server_args[1:]
         cmd += ['-t', hostname]
-        terminfo = subprocess.check_output(['infocmp']).decode('utf-8')
+        terminfo = subprocess.check_output(['infocmp', '-a']).decode('utf-8')
         f = get_posix_cmd if use_posix else get_python_cmd
         cmd += f(terminfo, remote_args)
     os.execvp('ssh', cmd)