Is there a cheat sheet anywhere telling what color correlates to category of byte?

[Michael Bonnet]

Obviously the color highlighting is wonderful, but I'm not knowledgeable enough to know what color denotes what.

[David Peter]

Good point. We should add a simple table to the README.

Until then, you can look at these parts:

hexyl/src/lib.rs

Lines 15 to 20 in 9602667

 const COLOR_NULL: Color = Fixed(242); // grey 
 const COLOR_OFFSET: Color = Fixed(242); // grey 
 const COLOR_ASCII_PRINTABLE: Color = Color::Cyan; 
 const COLOR_ASCII_WHITESPACE: Color = Color::Green; 
 const COLOR_ASCII_OTHER: Color = Color::Purple; 
 const COLOR_NONASCII: Color = Color::Yellow; 

hexyl/src/lib.rs

Lines 34 to 58 in 9602667

 fn category(self) -> ByteCategory { 
     if self.0 == 0x00 { 
         ByteCategory::Null 
     } else if self.0.is_ascii_graphic() { 
         ByteCategory::AsciiPrintable 
     } else if self.0.is_ascii_whitespace() { 
         ByteCategory::AsciiWhitespace 
     } else if self.0.is_ascii() { 
         ByteCategory::AsciiOther 
     } else { 
         ByteCategory::NonAscii 
     } 
 } 
  
 fn color(self) -> &'static Color { 
     use crate::ByteCategory::*; 
  
     match self.category() { 
         Null => &COLOR_NULL, 
         AsciiPrintable => &COLOR_ASCII_PRINTABLE, 
         AsciiWhitespace => &COLOR_ASCII_WHITESPACE, 
         AsciiOther => &COLOR_ASCII_OTHER, 
         NonAscii => &COLOR_NONASCII, 
     } 
 } 

And Rusts documentation for some of these methods, e.g. https://doc.rust-lang.org/std/primitive.char.html#method.is_ascii_graphic

[Joe Hillenbrand]

@sharkdp On a similar note. Is there a way to customize the colors? I suppose I could just tweak it in source.

[David Peter]

@sharkdp On a similar note. Is there a way to customize the colors? I suppose I could just tweak it in source.

there is no way to do that right now.