Constants

A number of constants are predefined:

NameValue
HEX1.27.0"0123456789abcdef"
HEXLOWER1.27.0"0123456789abcdef"
HEXUPPER1.27.0"0123456789ABCDEF"
CLEAR1.37.0"\ec"
NORMAL1.37.0"\e[0m"
BOLD1.37.0"\e[1m"
ITALIC1.37.0"\e[3m"
UNDERLINE1.37.0"\e[4m"
INVERT1.37.0"\e[7m"
HIDE1.37.0"\e[8m"
STRIKETHROUGH1.37.0"\e[9m"
BLACK1.37.0"\e[30m"
RED1.37.0"\e[31m"
GREEN1.37.0"\e[32m"
YELLOW1.37.0"\e[33m"
BLUE1.37.0"\e[34m"
MAGENTA1.37.0"\e[35m"
CYAN1.37.0"\e[36m"
WHITE1.37.0"\e[37m"
BG_BLACK1.37.0"\e[40m"
BG_RED1.37.0"\e[41m"
BG_GREEN1.37.0"\e[42m"
BG_YELLOW1.37.0"\e[43m"
BG_BLUE1.37.0"\e[44m"
BG_MAGENTA1.37.0"\e[45m"
BG_CYAN1.37.0"\e[46m"
BG_WHITE1.37.0"\e[47m"
@foo:
  echo {{HEX}}

$ just foo
0123456789abcdef

Constants starting with \e are ANSI escape sequences.

CLEAR clears the screen, similar to the clear command. The rest are of the form \e[Nm, where N is an integer, and set terminal display attributes.

Terminal display attribute escape sequences can be combined, for example text weight BOLD, text style STRIKETHROUGH, foreground color CYAN, and background color BG_BLUE. They should be followed by NORMAL, to reset the terminal back to normal.

Escape sequences should be quoted, since [ is treated as a special character by some shells.

@foo:
  echo '{{BOLD + STRIKETHROUGH + CYAN + BG_BLUE}}Hi!{{NORMAL}}'