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241 satır
9.0 KiB
241 satır
9.0 KiB
;;; magit-margin.el --- margins in Magit buffers -*- lexical-binding: t -*-
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;; Copyright (C) 2010-2019 The Magit Project Contributors
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;;
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;; You should have received a copy of the AUTHORS.md file which
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;; lists all contributors. If not, see http://magit.vc/authors.
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;; Author: Jonas Bernoulli <jonas@bernoul.li>
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;; Maintainer: Jonas Bernoulli <jonas@bernoul.li>
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;; Magit is free software; you can redistribute it and/or modify it
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;; under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; Magit is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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;; License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with Magit. If not, see http://www.gnu.org/licenses.
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;;; Commentary:
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;; This library implements support for showing additional information
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;; in the margins of Magit buffers. Currently this is only used for
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;; commits, for which the committer date or age, and optionally the
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;; author name are shown.
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;;; Code:
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(require 'dash)
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(eval-when-compile
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(require 'subr-x))
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(require 'magit-section)
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(require 'magit-transient)
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(require 'magit-mode)
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(defgroup magit-margin nil
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"Information Magit displays in the margin.
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You can change the STYLE and AUTHOR-WIDTH of all `magit-*-margin'
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options to the same values by customizing `magit-log-margin'
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*before* `magit' is loaded. If you do that, then the respective
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values for the other options will default to what you have set
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for that variable. Likewise if you set `magit-log-margin's INIT
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to nil, then that is used in the default of all other options. But
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setting it to t, i.e. re-enforcing the default for that option,
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does not carry to other options."
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:link '(info-link "(magit)Log Margin")
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:group 'magit-log)
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(defvar-local magit-buffer-margin nil)
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(put 'magit-buffer-margin 'permanent-local t)
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(defvar-local magit-set-buffer-margin-refresh nil)
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(defvar magit--age-spec)
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;;; Commands
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(define-transient-command magit-margin-settings ()
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"Change what information is displayed in the margin."
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:info-manual "(magit) Log Margin"
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["Margin"
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("L" "Toggle visibility" magit-toggle-margin)
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("l" "Cycle style" magit-cycle-margin-style)
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("d" "Toggle details" magit-toggle-margin-details)
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("v" "Change verbosity" magit-refs-set-show-commit-count
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:if-derived magit-refs-mode)])
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(defun magit-toggle-margin ()
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"Show or hide the Magit margin."
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(interactive)
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(unless (magit-margin-option)
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(user-error "Magit margin isn't supported in this buffer"))
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(setcar magit-buffer-margin (not (magit-buffer-margin-p)))
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(magit-set-buffer-margin))
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(defun magit-cycle-margin-style ()
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"Cycle style used for the Magit margin."
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(interactive)
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(unless (magit-margin-option)
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(user-error "Magit margin isn't supported in this buffer"))
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;; This is only suitable for commit margins (there are not others).
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(setf (cadr magit-buffer-margin)
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(pcase (cadr magit-buffer-margin)
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(`age 'age-abbreviated)
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(`age-abbreviated
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(let ((default (cadr (symbol-value (magit-margin-option)))))
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(if (stringp default) default "%Y-%m-%d %H:%M ")))
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(_ 'age)))
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(magit-set-buffer-margin nil t))
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(defun magit-toggle-margin-details ()
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"Show or hide details in the Magit margin."
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(interactive)
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(unless (magit-margin-option)
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(user-error "Magit margin isn't supported in this buffer"))
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(setf (nth 3 magit-buffer-margin)
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(not (nth 3 magit-buffer-margin)))
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(magit-set-buffer-margin nil t))
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;;; Core
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(defun magit-buffer-margin-p ()
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(car magit-buffer-margin))
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(defun magit-margin-option ()
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(pcase major-mode
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(`magit-cherry-mode 'magit-cherry-margin)
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(`magit-log-mode 'magit-log-margin)
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(`magit-log-select-mode 'magit-log-select-margin)
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(`magit-reflog-mode 'magit-reflog-margin)
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(`magit-refs-mode 'magit-refs-margin)
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(`magit-stashes-mode 'magit-stashes-margin)
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(`magit-status-mode 'magit-status-margin)
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(`forge-notifications-mode 'magit-status-margin)))
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(defun magit-set-buffer-margin (&optional reset refresh)
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(when-let ((option (magit-margin-option)))
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(let* ((default (symbol-value option))
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(default-width (nth 2 default)))
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(when (or reset (not magit-buffer-margin))
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(setq magit-buffer-margin (copy-sequence default)))
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(pcase-let ((`(,enable ,style ,_width ,details ,details-width)
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magit-buffer-margin))
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(when (functionp default-width)
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(setf (nth 2 magit-buffer-margin)
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(funcall default-width style details details-width)))
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(dolist (window (get-buffer-window-list nil nil 0))
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(with-selected-window window
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(magit-set-window-margin window)
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(if enable
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(add-hook 'window-configuration-change-hook
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'magit-set-window-margin nil t)
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(remove-hook 'window-configuration-change-hook
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'magit-set-window-margin t))))
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(when (and enable (or refresh magit-set-buffer-margin-refresh))
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(magit-refresh-buffer))))))
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(defun magit-set-window-margin (&optional window)
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(when (or window (setq window (get-buffer-window)))
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(with-selected-window window
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(set-window-margins
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nil (car (window-margins))
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(and (magit-buffer-margin-p)
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(nth 2 magit-buffer-margin))))))
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(defun magit-make-margin-overlay (&optional string previous-line)
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(if previous-line
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(save-excursion
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(forward-line -1)
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(magit-make-margin-overlay string))
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;; Don't put the overlay on the complete line to work around #1880.
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(let ((o (make-overlay (1+ (line-beginning-position))
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(line-end-position)
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nil t)))
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(overlay-put o 'evaporate t)
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(overlay-put o 'before-string
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(propertize "o" 'display
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(list (list 'margin 'right-margin)
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(or string " ")))))))
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(defun magit-maybe-make-margin-overlay ()
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(when (or (magit-section-match
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'(unpulled unpushed recent stashes local cherries)
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magit-insert-section--current)
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(and (eq major-mode 'magit-refs-mode)
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(magit-section-match
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'(remote commit tags)
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magit-insert-section--current)))
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(magit-make-margin-overlay nil t)))
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;;; Custom Support
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(defun magit-margin-set-variable (mode symbol value)
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(set-default symbol value)
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(message "Updating margins in %s buffers..." mode)
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(dolist (buffer (buffer-list))
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(with-current-buffer buffer
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(when (eq major-mode mode)
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(magit-set-buffer-margin t)
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(magit-refresh))))
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(message "Updating margins in %s buffers...done" mode))
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(defconst magit-log-margin--custom-type
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'(list (boolean :tag "Show margin initially")
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(choice :tag "Show committer"
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(string :tag "date using time-format" "%Y-%m-%d %H:%M ")
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(const :tag "date's age" age)
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(const :tag "date's age (abbreviated)" age-abbreviated))
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(const :tag "Calculate width using magit-log-margin-width"
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magit-log-margin-width)
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(boolean :tag "Show author name by default")
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(integer :tag "Show author name using width")))
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;;; Time Utilities
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(defvar magit--age-spec
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`((?Y "year" "years" ,(round (* 60 60 24 365.2425)))
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(?M "month" "months" ,(round (* 60 60 24 30.436875)))
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(?w "week" "weeks" ,(* 60 60 24 7))
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(?d "day" "days" ,(* 60 60 24))
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(?h "hour" "hours" ,(* 60 60))
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(?m "minute" "minutes" 60)
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(?s "second" "seconds" 1))
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"Time units used when formatting relative commit ages.
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The value is a list of time units, beginning with the longest.
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Each element has the form (CHAR UNIT UNITS SECONDS). UNIT is the
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time unit, UNITS is the plural of that unit. CHAR is a character
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abbreviation. And SECONDS is the number of seconds in one UNIT.
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This is defined as a variable to make it possible to use time
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units for a language other than English. It is not defined
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as an option, because most other parts of Magit are always in
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English.")
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(defun magit--age (date &optional abbreviate)
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(cl-labels ((fn (age spec)
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(pcase-let ((`(,char ,unit ,units ,weight) (car spec)))
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(let ((cnt (round (/ age weight 1.0))))
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(if (or (not (cdr spec))
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(>= (/ age weight) 1))
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(list cnt (cond (abbreviate char)
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((= cnt 1) unit)
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(t units)))
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(fn age (cdr spec)))))))
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(fn (abs (- (float-time)
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(if (stringp date)
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(string-to-number date)
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date)))
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magit--age-spec)))
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;;; _
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(provide 'magit-margin)
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;;; magit-margin.el ends here
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