Predictable ID colours in blame view

[commonquail]

Right now the ID colours in the blame view are not predictable. I find this to be very confusing and a huge distraction when navigating through history. The colours don't need to be permanently consistent or even necessarily within the same tig session, but they shouldn't change as long as you stay in the blame view. The Irssi nick colouring algorithm could be one way to do this, but I have no idea how well that would integrate.

my @colors = qw/2 3 4 5 6 7 9 10 11 12 13/;

sub simple_hash {
  my ($string) = @_;
  chomp $string;
  my @chars = split //, $string;
  my $counter;

  foreach my $char (@chars) {
    $counter += ord $char;
  }

  $counter = $colors[$counter % 11];

  return $counter;
}

[jonas]

This has been addressed in commit 0ebb9a4. It does not guarantee that colors are different for neighboring commits in the blame view, but that would not be possible anyway if commit IDs must be stable and predictable.