transient 
- Description
- Transient commands
- Latest
- transient-0.8.3.tar (.sig), 2025-Jan-03, 610 KiB
- Maintainer
- Jonas Bernoulli <[email protected]>
- Website
- https://github.com/magit/transient
- Browse ELPA's repository
- CGit or Gitweb
- Badge
- Manual
- transient
To install this package from Emacs, use package-install or list-packages.
Full description
1. Transient command menus
Transient is the library used to implement the keyboard-driven “menus” in Magit. It is distributed as a separate package, so that it can be used to implement similar menus in other packages.
1.1. Some things that Transient can do
- Display current state of arguments
- Display and manage lifecycle of modal bindings
- Contextual user interface
- Flow control for wizard-like composition of interactive forms
- History & persistence
- Rendering arguments for controlling CLI programs
1.2. Complexity in CLI programs
Complexity tends to grow with time. How do you manage the complexity
of commands? Consider the humble shell command ls. It now has over
fifty command line options. Some of these are boolean flags (ls -l).
Some take arguments (ls --sort=s). Some have no effect unless paired
with other flags (ls -lh). Some are mutually exclusive. Some shell
commands even have so many options that they introduce subcommands
(git branch, git commit), each with their own rich set of options
(git branch -f).
1.3. Using Transient for composing interactive commands
What about Emacs commands used interactively? How do these handle
options? One solution is to make many versions of the same command,
so you don't need to! Consider: delete-other-windows vs.
delete-other-windows-vertically (among many similar examples).
Some Emacs commands will simply prompt you for the next "argument"
(M-x switch-to-buffer). Another common solution is to use prefix
arguments which usually start with C-u. Sometimes these are sensibly
numerical in nature (C-u 4 M-x forward-paragraph to move forward 4
paragraphs). But sometimes they function instead as boolean
"switches" (C-u C-SPACE to jump to the last mark instead of just
setting it, C-u C-u C-SPACE to unconditionally set the mark). Since
there aren't many standards for the use of prefix options, you have to
read the command's documentation to find out what the possibilities
are.
But when an Emacs command grows to have a truly large set of options
and arguments, with dependencies between them, lots of option values,
etc., these simple approaches just don't scale. Transient is designed
to solve this issue. Think of it as the humble prefix argument C-u,
raised to the power of 10. Like C-u, it is key driven. Like the
shell, it supports boolean "flag" options, options that take
arguments, and even "sub-commands", with their own options. But
instead of searching through a man page or command documentation,
well-designed transients guide their users to the relevant set of
options (and even their possible values!) directly, taking into
account any important pre-existing Emacs settings. And while for
shell commands like ls, there is only one way to "execute" (hit
Return!), transients can "execute" using multiple different keys tied
to one of many self-documenting actions (imagine having 5 different
colored return keys on your keyboard!). Transients make navigating
and setting large, complex groups of command options and arguments
easy. Fun even. Once you've tried it, it's hard to go back to the
C-u what can I do here again? way.
Old versions
| transient-0.8.2.tar.lz | 2025-Jan-01 | 103 KiB |
| transient-0.8.1.tar.lz | 2024-Dec-09 | 101 KiB |
| transient-0.8.0.tar.lz | 2024-Dec-07 | 101 KiB |
| transient-0.7.9.tar.lz | 2024-Nov-05 | 96.5 KiB |
| transient-0.7.8.tar.lz | 2024-Nov-02 | 96.3 KiB |
| transient-0.7.7.tar.lz | 2024-Oct-05 | 95.1 KiB |
| transient-0.7.6.tar.lz | 2024-Oct-02 | 94.9 KiB |
| transient-0.7.5.tar.lz | 2024-Sep-01 | 94.5 KiB |
| transient-0.7.4.tar.lz | 2024-Aug-05 | 94.6 KiB |
| transient-0.7.3.tar.lz | 2024-Jul-14 | 94.1 KiB |
| transient-0.7.2.tar.lz | 2024-Jun-24 | 93.6 KiB |
| transient-0.7.1.tar.lz | 2024-Jun-19 | 93.2 KiB |
| transient-0.7.0.tar.lz | 2024-Jun-18 | 93.1 KiB |
| transient-0.6.0.tar.lz | 2024-Mar-31 | 92.1 KiB |
| transient-0.5.3.tar.lz | 2023-Dec-16 | 90.2 KiB |
| transient-0.5.0.tar.lz | 2023-Nov-28 | 88.8 KiB |
| transient-0.4.3.tar.lz | 2023-Aug-25 | 86.4 KiB |
| transient-0.4.0.tar.lz | 2023-May-10 | 85.8 KiB |
| transient-0.3.7.tar.lz | 2021-Oct-25 | 69.8 KiB |
| transient-0.3.0.tar.lz | 2021-Feb-27 | 68.2 KiB |
News
# -*- mode: org -*- * v0.8.3 2025-01-03 - Added new constant ~transient-version~. 3022f6d5 * v0.8.2 2025-01-01 - Added support for displaying the transient menu in a dedicated frame. bf58c0bb - When including a group via a variable, the imported value can now be a top-level group. eebcbe30 - The transient window is now fitted to its buffer horizontally as well. fd9811ea - Added new command ~transient-copy-menu-text~. 042f37aa - Added new command ~transient-toggle-docstrings~. 52679f98 - Added new command ~transient-describe~, which can be bound as many times as needed to show help for arbitrary things. 5a18a791 Bug fixes: - The use of ~display-buffer-full-frame~ was prevented too aggressively. 5353464b - Fixed remembering and restoring the old value of the ~no-other-window~ window parameter. de984302 - When a command is bound multiple times and the instances use different transient behavior, then the behavior (and color) for the last binding was used for all bindings. fe71a7e7, a99dcda9 - Enabling ~transient-force-single-column~ resulted in an error. 28347e59 - ~transient-toggle-common~ used to exit the menu. 98c01b84 * v0.8.1 2024-12-08 Bug fixes: - Interactively setting the level of a transient prefix resulted in an error. #337. * v0.8.0 2024-12-06 - While the minibuffer is in use, the menu window is now hidden by default. The new option ~transient-show-during-minibuffer-read~ not only controls whether the menu stays visible while the minibuffer is in use, but also whether it may be resized if necessary. This new option replaces ~transient-hide-during-minibuffer-read~. #330 - When returning to a prefix whose ~refresh-suffixes~ slot is non-nil, its suffixes are now re-initialized. #327 - Added documentation for ~inapt-if*~ slots to manual. 179545a6 - ~transient-args~ and ~transient-scope~ now both take a prefix command or a list of prefix commands as argument. ~transient-scope~ can still be called without an argument, but that should only be done in functions that take part in setting up a menu, not in a suffix command. - Added new generic function ~transient-prefix-value~, giving finer control over how the value returned by ~transient-args~ is determined. - Added support for implementing ~transient-init-scope~ methods for prefix classes. - ~transient-setup-buffer-hook~ is now run later to allow overriding more default settings. - The new prefix slots ~display-action~ and ~mode-line-format~, can be used to override ~transient-display-buffer-action~ and ~transient-mode-line-format~ for individual prefix menus. #332 - Updated the manual considerably. Bug fixes: - Fixes some menu navigation edge-cases. * v0.7.9 2024-11-04 Bug fixes: - Fixed a recent regression in ~transient-suffix-object~. #325 - The height of the transient window was fixed even it used the full frame height. 5478d4e6 * v0.7.8 2024-11-02 - Additional potential mistakes in menu definitions are now detected. bbda5bb6, 8873c300 - Added new (and still experimental) ~environment~ prefix slot, which can be used to, for example, implement a cache to be used while refreshing the menu. 05c011b8 - When navigating through the menu using the keyboard or hovering a suffix command with the mouse, information about the command is now shown in the echo area or using a tooltip. #282 Bug fixes: - When the command that exits a transient uses the minibuffer, ~transient-current-*~ variables were not immediately reset to ~nil~. #323 - Key sequences with three or more events broke ~transient-suffix-object~. #324 * v0.7.7 2024-10-04 Bug fix: - Fix a regression introduced by the previous commit, which broke dynamic prefixes that use a ~:setup-children~ function to prepare their suffixes. #313 * v0.7.6 2024-10-01 - ~transient-active-prefix~ now accepts a single prefix symbol, in place of a list of such symbols. #307 - ~other-frame-prefix~ and ~other-window-prefix~ can now be used while a ... ...