Constants

A number of constants are predefined:

Name	Value
`HEX`^1.27.0	`"0123456789abcdef"`
`HEXLOWER`^1.27.0	`"0123456789abcdef"`
`HEXUPPER`^1.27.0	`"0123456789ABCDEF"`
`CLEAR`^master	`"\ec"`
`NORMAL`^master	`"\e[0m"`
`BOLD`^master	`"\e[1m"`
`ITALIC`^master	`"\e[3m"`
`UNDERLINE`^master	`"\e[4m"`
`INVERT`^master	`"\e[7m"`
`HIDE`^master	`"\e[8m"`
`STRIKETHROUGH`^master	`"\e[9m"`
`BLACK`^master	`"\e[30m"`
`RED`^master	`"\e[31m"`
`GREEN`^master	`"\e[32m"`
`YELLOW`^master	`"\e[33m"`
`BLUE`^master	`"\e[34m"`
`MAGENTA`^master	`"\e[35m"`
`CYAN`^master	`"\e[36m"`
`WHITE`^master	`"\e[37m"`
`BG_BLACK`^master	`"\e[40m"`
`BG_RED`^master	`"\e[41m"`
`BG_GREEN`^master	`"\e[42m"`
`BG_YELLOW`^master	`"\e[43m"`
`BG_BLUE`^master	`"\e[44m"`
`BG_MAGENTA`^master	`"\e[45m"`
`BG_CYAN`^master	`"\e[46m"`
`BG_WHITE`^master	`"\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}}'