A shell (bash- and zsh-compatible) library, largely for:

• logging (with colours)
• easier input (e.g. with defaults, single-keystroke, continuation, etc)

Put the file on your PATH and then use source g_lib.sh in your shell.

• source g_lib.sh

• g_opts ...

  See source for what options are available.

• g_colr [ -r ] $colour "text"

  Example: g_colr cyan "this is output in colour"

  Output the text in colour - where colour is one of:

  - `black`, `red`, `green`, `yellow`, `blue`, `magenta`, `cyan` or `white`
  - for bold versions of the colours, use one of:
    - uppercase - e.g. `BLACK` is grey
    - the prefix `bright_` - e.g. `bright_black` is grey
  - `BOLD` turns on bold for the current colour
  - `${foreground_colour}_on_${background_colour}` - e.g. `black_on_white`
  

  If text already has embedded colours, then the -r flag can be used to re-apply colour after each embedded colour segment. e.g. g_colr -r cyan "cyan-before $(g_colr red "red-highlight") cyan-after"

• yorn "Continue"

  Ask a question and the single-keystroke answer (y, n) returns in $yorn

Copyright © 2018-2025, Geraint "Gedge" Edwards

Released under MIT license, see LICENSE for details.