bug#69598: 29.2; colour support based on $TERM value not terminfo database

[chohag]

chohag@jtan.com writes:
>
>         $ doas hexdump -C /tmp/debug
>         00000000  60 60 60 1b 5b 4c 27 27  27 0a                    
> |```.[L'''.|
>         0000000a
>

Sorry, but in case it wasn't obvious the ``` and ''' were added by
me in the print statement:

+    dprintf(bug, "```%s'''\n", tty->termcap_strings_buffer);

I was expecting cat to be enough.

Matthew