adding color

[Var7600]

dded color RED for: keyword, builtin, alias/file, function, multiple
files/absolute symlinks, relative symlink
and color GREEN for the rest.
added output example with color for the README file.

[wjandrea]

Thanks, this is interesting, but I want to make colours optional so that what still works properly on terminals that don't support colour.

[wjandrea]

0;00 is redundant. Just use 0

[wjandrea]

On source, these will be in the environment and could easily be overwritten. I would obfuscate them like the functions: _What_GREEN etc

[wjandrea]

No reason to do this when you can use %b instead: printf "%bdefinition%b: " "$GREEN" "$NORMAL"

[wjandrea]

Why remove? Is this just a typo?

[Var7600]

Thanks, this is interesting, but I want to make colours optional so that what still works properly on terminals that don't support colour.

so can i add a option like --color to output with colors?

[wjandrea]

so can i add a option like --color to output with colors?

Yeah, that'd work. Although, what uses getopts, so it'd have to be a single character like -c.

(Sorry for the delay. I missed your reply somehow.)

[Var7600]

so can i add a option like --color to output with colors?

Yeah, that'd work. Although, what uses getopts, so it'd have to be a single character like -c.

(Sorry for the delay. I missed your reply somehow.)

okay -c option i'm going to try base on your suggestions and reviews.

[Dunes]

Looks, like this got forgotten about. However, if you care about portable terminal colour codes then try using tput. It queries the terminfo database to see if the terminal supports the given capability and if so, outputs a sequence that the terminal will understand. It comes with most linux distributions, except things like alpine. Example usage:

RED=1
GREEN=2

put_green() {
    tput setaf $GREEN  # sets foreground colour to green if terminal supports colors
    echo $@
    tput sgr0 # resets terminal to initial state
}

Alternatively, if you want to avoid two tput calls for each line you want to print:

RED="$( tput setaf 1 )"
GREEN="$( tput setaf 2 )"
RESET="$( tput sgr0 )"

put_color() {
   printf "%s%s%s\n" "$1" "${*:2}" "$RESET"
}

put_color $GREEN foo bar

Almost everyone has an xterm, so this basically reduces to the escape codes you already have in this PR.