Re: print in purple question

On 11/3/24 22:04, Bruce Gray wrote:
> 
> 
>> On Nov 3, 2024, at 22:12, ToddAndMargo via perl6-users <[email protected]> wrote:
>>
>> Hi All,
>>
>> Fedora 41
>> rakudo-pkg-2024.7.0-01.x86_64
>> bash-5.2.32-1.fc41.x86_64
>>
>> I am looking at
>>    https://metacpan.org/pod/Term::ANSIColor
>>
>> trying to figure out how to print in dark purple.
>> I have see dnf5 do this, so I know it is possible.
>>
>> Now one of the hurdles is that purple is not an
>> actual color.  It does not appear on a white
>> light spectrum break out.  Purple is a manifestation
>> of our brains interpreting a mixture of red and blue.
>>
>> So how do I mix red and blue to get dark purple?
>>
>> Many thanks,
>> -T
>>
> 
> Magenta is one of the standard ANSI terminal colors, so that is probably the color you are seeing in the `dnf` output as "purple".
> 
> Simplest example, using module:
> raku -e 'use Terminal::ANSIColor; say color("magenta"), "this is in purple(magenta)", color("reset");'
> 
> Just the four purples, in raw ANSI codes:
> raku -e 'say "\e\[{.[0]};{.[1]}m {.[0]};{.[1]} \e\[m " for (0,1) X (35,95);'
> 
> Full color grid:
> raku -e '
> my @fg = (31..37) X+ (0,60);
> my @bg = (41..47) X+ (0,60);
> say "    ", @bg.fmt("--%3d--", " ");
> for @fg -> $f {
>    print $f.fmt("%3d:");
>    for @bg -> $b {
>      for 0,1 -> $a {
>        my $z = "$a;$f;$b";
>        print "\e\[{$z}m $a \e\[m ";
>      }
>    }
>    say "";
> }'
> 
> For more info:
>      https://azrael.digipen.edu/~mmead/www/mg/ansicolors/index.html
> 

Hi Bruce,

Are the numbers in the "ANSI Escape Sequences (Details) " of the link,
hexidecimal by chance? "9" an "8" are not octal.

       Attributes	 Foreground          Background
                          color               color
       00 = normal	 31 = red	     40 = black
       01 = bold	         32 = green	     41 = red
       04 = underlined	 33 = orange	     42 = green
       05 = blinking	 34 = blue	     43 = orange
       07 = reversed	 35 = purple	     44 = blue
       08 = concealed	 36 = cyan	     45 = purple
	                 37 = grey	     46 = cyan
	                 90 = dark grey	     47 = grey
	                 91 = light red	     100 = dark grey
	                 92 = light green    101 = light red
	                 93 = yellow	     102 = light green
	                 94 = light blue     103 = yellow
	                 95 = light purple   104 = light blue
	                 96 = turquoise	     105 = light purple
                                              106 = turquoise

This is what I was after:

 > print color('bold'), color('52'), "abc", color('reset'), "\n";
abc  <shows dark purple>

Questions:

1) why is "color('bold')" = bold, and
           "color('01')    = normal?

2) why is "color('52')" (34 hex) dark purple and not blue?


Yours in confusion,
-T