GNU ELPA - tmr

Copyright (C) 2021-2025 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with the Front-Cover Texts being “A GNU Manual,” and with the Back-Cover Texts as in (a) below. A copy of the license is included in the section entitled “GNU Free Documentation License.”

(a) The FSF’s Back-Cover Text is: “You have the freedom to copy and modify this GNU manual.”

TMR is an Emacs package that provides facilities for setting timers using a convenient notation. The first point of entry is the tmr command. It prompts for a unit of time, which is represented as a string that consists of a number and, optionally, a single character suffix which specifies the unit of time. Without a suffix, the number is interpreted as a count in minutes. Valid input formats:

Input	Meaning
5	5 minutes
5m	5 minutes
5s	5 seconds
5h	5 hours

The input can be a floating point:

Input	Meaning
1.5	1.5 minutes (90 seconds)
1.5h	1.5 hours (90 minutes)

The input can also be an absolute time, such as 16:00 or 16:00:30. It sets a timer from present time until the one specified.

If tmr is called with an optional prefix argument (C-u with default key bindings), it asks for a description to be associated with the given timer.

An alternative to the tmr command is tmr-with-details. The difference between the two is that the latter always prompts for a description and if the timer should be acknowledged.

The command tmr-edit-description can change the description a given timer object.

The command tmr-toggle-acknowledge toggles the acknowledge flag of a given timer object. A timer that needs to be acknowledged prompts for confirmation after it elapses. The user can either confirm and thus dismiss the timer, or set a new duration for the next reminder, using the familiar TMR input.

The user option tmr-descriptions-list defines the completion candidates that are shown at the description prompt. Its value can be either a list of strings or the symbol of a variable that holds a list of strings. The default value of tmr-description-history, is the name of a variable that contains input provided by the user at the relevant prompt of the tmr and tmr-with-details commands.

When the timer is set, a message is sent to the echo area recording the current time and the point in the future when the timer elapses. Echo area messages can be reviewed with the view-echo-area-messages which is bound to C-h e by default. To check all timers, use the command tmr-tabulated-view, which has more features than the generic *Messages* buffer (Grid view).

The tmr-cancel command cancels running timers without erasing them from the list of created timer objects. Timers at the completion prompt are described by the exact time they were set and the input that was used to create them, including the optional description that tmr and tmr-with-details accept.

The tmr-remove command is like tmr-cancel, except it is not limited to active timers: it can target elapsed ones as well.

The tmr-clone command directly copies the duration and optional description of a timer into a new one. With an optional prefix argument (C-u by default), this command prompts for a duration. If a double prefix argument is supplied (C-u C-u), the command asks for a duration and then a description. The default values of such prompts are those of the original timer.

The command tmr-reschedule changes the duration of the given timer to a new one provided at the prompt. In practice this is a shortcut to (i) cloning the timer, (ii) prompting for duration, and (iii) cancelling the original timer.

The tmr-remove-finished command deletes all elapsed timers from the list of timers. This means that they can no longer be cloned.

By default, TMR uses minibuffer completion to pick a timer object in operations such as cloning and cancelling. If the user option tmr-confirm-single-timer is set to nil, TMR will not use completion when there is only one timer available: it will perform the specified command outright.

Timers have hooks associated with their creation, cancellation, and completion (Hooks). TMR can also integrate with the desktop environment to send notifications (Sound and desktop notifications).

TMR does not specify global key bindings. Instead, it sets up the tmr-prefix-map, which specifies keys for the relevant commands. The user has the option to either bind the map to a prefix key, such as C-c t (so tmr is C-c t t), or bind individual commands to the desired keys (Sample configuration).

Start      End        Duration   Remaining  Acknowlegde?   Description

10:26:05   10:36:05   10m        9m 45s                    Prepare tea
10:25:50   10:30:50   5m         4m 31s     Yes            Test the feature
10:25:04   10:35:04   10m        8m 44s

(require 'savehist)
(setq savehist-file (locate-user-emacs-file "savehist"))
(setq history-length 500)
(setq history-delete-duplicates t)
(setq savehist-save-minibuffer-history t)
(add-hook 'after-init-hook #'savehist-mode)

M-x package-refresh-contents
M-x package-install

cd ~/.emacs.d

# Create a directory for manually-installed packages
mkdir manual-packages

# Go to the new directory
cd manual-packages

# Clone this repo, naming it "tmr"
git clone https://github.com/protesilaos/tmr tmr

;; Make Elisp files in that directory available to the user.
(add-to-list 'load-path "~/.emacs.d/manual-packages/tmr")

The embark package provides standards-compliant infrastructure to run context-dependent actions on all sorts of targets (symbol at point, current completion candidate, etc.). TMR is set up to make its timer objects recognisable by Embark and registers the tmr-action-map in Embark.

TMR is meant to be a collective effort. Every bit of help matters.

Authors

Protesilaos Stavrou (maintainer), Damien Cassou, Daniel Mendler, Steven Allen.

Contributions to the code or manual

Christian Tietze, Ed Tavinor, Eugene Mikhaylov, Lucas Quintana, Mirko Hernandez, Nathan R. DeGruchy, jpg.

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