Overrided eza defaults to output long-ISO timestamps, color, and puts directories first. Fork of better-ls.sh in andresgongora/synth-shell.

better-eza.sh

#!/usr/bin/env bash

##  +-----------------------------------+-----------------------------------+
##  |                                                                       |
##  | Copyright (c) 2018-2020, Andres Gongora <mail@andresgongora.com>.     |
##  |                                                                       |
##  | This program is free software: you can redistribute it and/or modify  |
##  | it under the terms of the GNU General Public License as published by  |
##  | the Free Software Foundation, either version 3 of the License, or     |
##  | (at your option) any later version.                                   |
##  |                                                                       |
##  | This program is distributed in the hope that it will be useful,       |
##  | but WITHOUT ANY WARRANTY; without even the implied warranty of        |
##  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         |
##  | GNU General Public License for more details.                          |
##  |                                                                       |
##  | You should have received a copy of the GNU General Public License     |
##  | along with this program. If not, see <http://www.gnu.org/licenses/>.  |
##  |                                                                       |
##  +-----------------------------------------------------------------------+

##
##	DESCRIPTION
##
## A fork of better-ls.sh, reworked by Claude Opus 4.8 to use eza, a Rust rewrite of ls
## (https://github.com/andresgongora/synth-shell/blob/master/synth-shell/better-ls.sh)
##
##	Overrides eza with more useful/easier-to-read defaults.
##	- Colorized output
##	- Long timestamp (long-iso)
##	- Directories grouped first
##
##	HOW IT WORKS
##
##	- If no arguments passed
##		Shows hidden directories and files (in their own block, if any)
##		Shows visible directories and files
##		Falls back to listing . and .. when the folder is empty
##	- If a single directory is passed
##		Lists that directory using the no-argument behaviour
##	- If a single file is passed
##		Lists just that file in long format
##	- else
##		Passes the arguments straight to eza with the nicer defaults
##
##	DEV NOTES
##
##	local hidden=(.[^.]*)
##		Globs every hidden entry while omitting '.' and '..'. With nullglob
##		unset, a non-matching glob yields the literal pattern as the sole
##		element, so '[ -e "${hidden[0]}" ]' is a safe "does anything match?"
##		test that needs neither 'ls' nor a subshell.
##
##	.[^.]*
##		Anything starting with '.', followed by one char that can not be
##		'.', and then as many (or any) characters as wanted.
##
##	-d / --treat-dirs-as-files
##		Required when we pass globbed names explicitly, otherwise eza would
##		recurse into each directory and list its contents instead of the
##		directory entry itself.
##

# shellcheck disable=2120
function better_eza() {
	{ local EZA; EZA="$(type -P eza)"; }

	if [ -z "$EZA" ]; then
		command ls --color=auto "$@"
		return
	fi

	local opts=(
		--colour=auto
		--time-style=long-iso
		--group-directories-first
	)

	if [ $# -eq 0 ]; then
		local hidden=(.[^.]*)
		local visible=(*)

		if [ -e "${hidden[0]}" ]; then
			{ echo; "$EZA" -ld "${opts[@]}" -- "${hidden[@]}"; }
		fi

		if [ -e "${visible[0]}" ]; then
			"$EZA" -ld "${opts[@]}" -- "${visible[@]}"
		elif [ ! -e "${hidden[0]}" ]; then
			"$EZA" -ld "${opts[@]}" . ..
		fi
	elif [ $# -eq 1 ] && [ -d "$1" ]; then
		local current_pwd="$PWD"
		# shellcheck disable=SC2164
		{ cd "$1/" && better_eza; cd "$current_pwd"; }
	elif [ $# -eq 1 ] && [ -f "$1" ]; then
		"$EZA" -l "${opts[@]}" -- "$1"
	else
		## eza prints nothing when asked to list the *implicit* current
		## directory while stdout is not a TTY e.g. when using pipes
		for arg in "$@"; do
			if [ "${arg#-}" = "$arg" ]; then
				"$EZA" "${opts[@]}" "$@"
				return
			fi
		done
		"$EZA" "${opts[@]}" "$@" .
	fi
}

alias eza='better_eza'