zsh-users/zsh-syntax-highlighting

zsh-syntax-highlighting is a plugin for the Zsh shell, a popular command-line interface used on Mac and Linux, that colors your commands as you type them, before you press Enter. The Fish shell does this by default, and this project brings the same experience to Zsh. The practical benefit is immediate: if you start typing a command and it turns red, you know something is wrong, maybe the program does not exist, or there is a typo, before you accidentally run it. Correctly recognized commands and file paths appear in a different color, giving you visual confirmation as you work. It works by hooking into Zsh's line editor, which is the part of the shell that handles what you type at the prompt. As you type each character, the plugin scans what you have written and applies color codes on the fly. You would install this if you use Zsh as your shell and want faster feedback while typing commands in the terminal. It is commonly used alongside other Zsh plugins to make the command-line experience more comfortable and less error-prone. Installation involves adding a single line to your Zsh configuration file. The plugin is written in Shell script.