/usr/bin/gnome-terminal.wrapper is in gnome-terminal 3.28.1-1ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122  | #! /usr/bin/perl -w
my $login=0;
sub exists_in_path {
    my $command = shift;
    my @path = split ':', $ENV{PATH};
    foreach my $dir (@path) {
	if (-x "$dir/$command") {
	    return 1;
	}
    }
    return 0;
}
while ($opt = shift(@ARGV))
{
    if ($opt eq '-display')
    {
	$ENV{'DISPLAY'} = shift(@ARGV);
    }
    elsif ($opt eq '-name')
    {
	$arg = shift(@ARGV);
	push(@args, "--window-with-profile=$arg");
    }
    elsif ($opt eq '-n')
    {
	# Accept but ignore
	print STDERR "$0: to set an icon, please use -name <profile> and set a profile icon\n"
    }
    elsif ($opt eq '-T' || $opt eq '-title')
    {
	push(@args, '-t', shift(@ARGV));
    }
    elsif ($opt eq '-ls')
    {
	$login = 1;
    }
    elsif ($opt eq '+ls')
    {
	$login = 0;
    }
    elsif ($opt eq '-geometry')
    {
	$arg = shift(@ARGV);
	push(@args, "--geometry=$arg");
    }
    elsif ($opt eq '-fn')
    {
	$arg = shift(@ARGV);
	push(@args, "--font=$arg");
    }
    elsif ($opt eq '-fg')
    {
	$arg = shift(@ARGV);
	push(@args, "--foreground=$arg");
    }
    elsif ($opt eq '-bg')
    {
	$arg = shift(@ARGV);
	push(@args, "--background=$arg");
    }
    elsif ($opt eq '-tn')
    {
	$arg = shift(@ARGV);
	push(@args, "--termname=$arg");
    }
    elsif ($opt eq '-e')
    {
	# Debian Policy says we would be free to translate this into:
	# push(@args, '--', @ARGV);
	# but let's be nice to people with local scripts that rely on
	# xterm -e having a special case for a singular argument.
	$arg = shift(@ARGV);
	if (@ARGV)
	{
	    push(@args, '--', $arg, @ARGV);
	    last;
	}
	else
	{
	    # Emulate xterm's special case for a single argument: if it
	    # isn't something we can execute directly, pass it to a shell
	    my $executable;
	    if ($arg =~ m{/})
	    {
		$executable = -x $arg;
	    }
	    else
	    {
		$executable = exists_in_path($arg);
	    }
	    if ($executable)
	    {
		push(@args, '--', $arg);
	    }
	    else
	    {
		# Historically, we used the now-deprecated gnome-terminal -e
		# for this case, which would split the command line up as if
		# by a shell, but didn't support shell constructs like "if"
		# and pipes. But this is easier, and matches what xterm does.
		push(@args, '--', 'sh', '-c', $arg);
	    }
	}
	last;
    }
    elsif ($opt eq '-h' || $opt eq '--help')
    {
	push(@args, '--help');
    }
}
if ($login == 1)
{
    @args = ('--login', @args);
}
exec('gnome-terminal',@args);
 |