Add emacs/ibuffer module

And bind 'SPC b i' to ibuffer

modules/emacs/ibuffer/README.org

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+#+TITLE:   emacs/ibuffer
+#+DATE:    October 20, 2019
+#+SINCE:   v2.1.0
+#+STARTUP: inlineimages
+
+* Table of Contents :TOC_3:noexport:
+- [[#description][Description]]
+  - [[#module-flags][Module Flags]]
+  - [[#plugins][Plugins]]
+- [[#prerequisites][Prerequisites]]
+- [[#features][Features]]
+- [[#configuration][Configuration]]
+- [[#troubleshooting][Troubleshooting]]
+
+* Description
+This module augments ibuffer.
+
++ Adds project-based grouping of buffers
++ Support for file-type icons
++ Uses human-readable file-size
+
+** Module Flags
++ =+icons= Enables filetype icons for buffers
+
+** Plugins
++ [[https://github.com/purcell/ibuffer-projectile][ibuffer-projectile]]
++ [[https://github.com/purcell/ibuffer-vc][ibuffer-vc]]
+
+* Prerequisites
+This module has no prereqisites.
+
+* TODO Features
+
+* TODO Configuration
+
+* TODO Troubleshooting

modules/emacs/ibuffer/config.el

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+;;; emacs/ibuffer/config.el -*- lexical-binding: t; -*-
+
+(after! ibuffer
+  (set-popup-rule! "^\\*Ibuffer\\*$" :ignore t)
+
+  (setq ibuffer-show-empty-filter-groups nil
+        ibuffer-filter-group-name-face '(:inherit (success bold))
+        ibuffer-formats
+        `((mark modified read-only ,(if EMACS26+ 'locked "")
+                ,@(if (featurep! +icons)
+                      `(;; Here you may adjust by replacing :right with :center
+                        ;; or :left According to taste, if you want the icon
+                        ;; further from the name
+                        " " (icon 2 2 :left :elide)
+                        ,(propertize " " 'display `(space :align-to 8)))
+                    '(" "))
+                (name 18 18 :left :elide)
+                " " (size 9 -1 :right)
+                " " (mode 16 16 :left :elide)
+                ,@(when (require 'ibuffer-vc nil t)
+                    '(" " (vc-status 12 :left)))
+                " " filename-and-process)
+          (mark " " (name 16 -1) " " filename)))
+
+  ;; Display buffer icons on GUI
+  (define-ibuffer-column icon (:name "  ")
+    (let ((icon (if (and (buffer-file-name)
+                         (all-the-icons-auto-mode-match?))
+                    (all-the-icons-icon-for-file (file-name-nondirectory (buffer-file-name)) :v-adjust -0.05)
+                  (all-the-icons-icon-for-mode major-mode :v-adjust -0.05))))
+      (if (symbolp icon)
+          (setq icon (all-the-icons-faicon "file-o" :face 'all-the-icons-dsilver :height 0.8 :v-adjust 0.0))
+        icon)))
+
+  ;; Redefine size column to display human readable size
+  (define-ibuffer-column size
+    (:name "Size"
+     :inline t
+     :header-mouse-map ibuffer-size-header-map)
+    (file-size-human-readable (buffer-size)))
+
+  (when (featurep! :completion ivy)
+    (defadvice! +ibuffer-use-counsel-maybe-a (file &optional wildcards)
+      "Use `counsel-find-file' instead of `find-file'."
+      :override #'ibuffer-find-file
+      (interactive)
+      (counsel-find-file
+       (let ((buf (ibuffer-current-buffer)))
+         (if (buffer-live-p buf)
+             (with-current-buffer buf
+               default-directory)
+           default-directory)))))
+
+  (map! :map ibuffer-mode-map :n "q" #'kill-current-buffer))
+
+
+(use-package! ibuffer-projectile
+  ;; Group ibuffer's list by project root
+  :hook (ibuffer . ibuffer-projectile-set-filter-groups)
+  :config
+  (setq ibuffer-projectile-prefix
+        (if (featurep! +icons)
+            (concat (all-the-icons-octicon
+                     "file-directory"
+                     :face ibuffer-filter-group-name-face
+                     :v-adjust -0.05)
+                    " ")
+          "Project: ")))

modules/emacs/ibuffer/packages.el

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+;; -*- no-byte-compile: t; -*-
+;;; emacs/ibuffer/packages.el
+
+(package! ibuffer-projectile)
+(package! ibuffer-vc)