bug#73047: 31; [PATCH] - add recency column to ibuffer

[Daniel Mendler via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

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I've attached a patch to this mail which adds a recency column to
Ibuffer. It uses the `seconds-to-string' function with the READABLE
argument.


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From 33b5a0880cf7fe4e002d1c9f73bc20e79d77317e Mon Sep 17 00:00:00 2001
From: Daniel Mendler <mail@daniel-mendler.de>
Date: Sat, 28 Dec 2024 13:21:46 +0100
Subject: [PATCH] ibuffer: Define recency column

Define a column which shows how many seconds ago the respective
buffer has been displayed.  The time is formatted with the
`seconds-to-string' function, with the new arguments READABLE=t
and ABBREV=t.

* lisp/ibuffer.el (ibuffer-recency-header-map): New keymap.
(define-ibuffer-column recency): New column.
---
 lisp/ibuffer.el | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/lisp/ibuffer.el b/lisp/ibuffer.el
index 405fb98d4d4..10e26cba589 100644
--- a/lisp/ibuffer.el
+++ b/lisp/ibuffer.el
@@ -775,6 +775,9 @@ ibuffer-size-header-map
 (defvar-keymap ibuffer-mode-header-map
   "<mouse-1>"      #'ibuffer-do-sort-by-major-mode)
 
+(defvar-keymap ibuffer-recency-header-map
+  "<mouse-1>"      #'ibuffer-do-sort-by-recency)
+
 (defvar-keymap ibuffer-mode-filter-group-map
   "<mouse-1>"      #'ibuffer-mouse-toggle-mark
   "<mouse-2>"      #'ibuffer-mouse-toggle-filter-group
@@ -1721,6 +1724,16 @@ size
        (format "%.0f" total))))
   (format "%s" (buffer-size)))
 
+(define-ibuffer-column recency
+  (:inline t :summarizer ignore :header-mouse-map ibuffer-recency-header-map)
+  (if-let ((time (buffer-local-value 'buffer-display-time buffer)))
+      (format "%s ago" (seconds-to-string
+                        (float-time
+                         (time-since
+                          (buffer-local-value 'buffer-display-time buffer)))
+                        t t))
+    "never"))
+
 (define-ibuffer-column mode
   (:inline t
    :header-mouse-map ibuffer-mode-header-map
-- 
2.45.2