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This is transient.info, produced by makeinfo version 6.7 from
transient.texi.
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Copyright (C) 2018–
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You can redistribute this document and/or modify it under the terms
of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option)
any later version.
This document is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
INFO-DIR-SECTION Emacs misc features
START-INFO-DIR-ENTRY
* Transient: (transient). Transient Commands.
END-INFO-DIR-ENTRY
File: transient.info, Node: Top, Next: Introduction, Up: (dir)
Transient User and Developer Manual
***********************************
Taking inspiration from prefix keys and prefix arguments, Transient
implements a similar abstraction involving a prefix command, infix
arguments and suffix commands. We could call this abstraction a
“transient command”, but because it always involves at least two
commands (a prefix and a suffix) we prefer to call it just a
“transient”.
When the user calls a transient prefix command, a transient
(temporary) keymap is activated, which binds the transient’
suffix commands, and functions that control the transient state are
added to ‘ ’ ‘ ’
suffix and infix commands and their state are shown in a popup buffer
until the transient is exited by invoking a suffix command.
Calling an infix command causes its value to be changed, possibly by
reading a new value in the minibuffer.
Calling a suffix command usually causes the transient to be exited
but suffix commands can also be configured to not exit the transient.
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The second part of this manual, which describes how to modify
existing transients and create new transients from scratch, can be
hard to digest if you are just getting started. A useful resource
to get over that hurdle is Psionic K’
available at
<https://github.com/positron-solutions/transient-showcase>.
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This manual is for Transient version 0.4.1.
Copyright (C) 2018–
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You can redistribute this document and/or modify it under the terms
of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option)
any later version.
This document is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
* Menu:
* Introduction::
* Usage::
* Modifying Existing Transients::
* Defining New Commands::
* Classes and Methods::
* Related Abstractions and Packages::
* FAQ::
* Keystroke Index::
* Command and Function Index::
* Variable Index::
* Concept Index::
* GNU General Public License::
— The Detailed Node Listing —
Usage
* Invoking Transients::
* Aborting and Resuming Transients::
* Common Suffix Commands::
* Saving Values::
* Using History::
* Getting Help for Suffix Commands::
* Enabling and Disabling Suffixes::
* Other Commands::
* Configuration::
Defining New Commands
* Defining Transients::
* Binding Suffix and Infix Commands::
* Defining Suffix and Infix Commands::
* Using Infix Arguments::
* Transient State::
Binding Suffix and Infix Commands
* Group Specifications::
* Suffix Specifications::
Classes and Methods
* Group Classes::
* Group Methods::
* Prefix Classes::
* Suffix Classes::
* Suffix Methods::
* Prefix Slots::
* Suffix Slots::
* Predicate Slots::
Suffix Methods
* Suffix Value Methods::
* Suffix Format Methods::
Related Abstractions and Packages
* Comparison With Prefix Keys and Prefix Arguments::
* Comparison With Other Packages::
File: transient.info, Node: Introduction, Next: Usage, Prev: Top, Up: Top
1 Introduction
**************
Taking inspiration from prefix keys and prefix arguments, Transient
implements a similar abstraction involving a prefix command, infix
arguments and suffix commands. We could call this abstraction a
“transient command”, but because it always involves at least two
commands (a prefix and a suffix) we prefer to call it just a
“transient”.
Transient keymaps are a feature provided by Emacs. Transients as
implemented by this package involve the use of transient keymaps.
Emacs provides a feature that it calls “prefix commands”. When we
talk about “prefix commands” in this manual, then we mean our own
kind of “prefix commands”, unless specified otherwise. To avoid
ambiguity we sometimes use the terms “transient prefix command” for
our kind and “regular prefix command” for Emacs’
When the user calls a transient prefix command, a transient
(temporary) keymap is activated, which binds the transient’
suffix commands, and functions that control the transient state are
added to ‘ ’ ‘ ’
suffix and infix commands and their state are shown in a popup buffer
until the transient state is exited by invoking a suffix command.
Calling an infix command causes its value to be changed. How that is
done depends on the type of the infix command. The simplest case is an
infix command that represents a command-line argument that does not take
a value. Invoking such an infix command causes the switch to be toggled
on or off. More complex infix commands may read a value from the user,
using the minibuffer.
Calling a suffix command usually causes the transient to be exited;
the transient keymaps and hook functions are removed, the popup buffer
no longer shows information about the (no longer bound) suffix commands,
the values of some public global variables are set, while some internal
global variables are unset, and finally the command is actually called.
Suffix commands can also be configured to not exit the transient.
A suffix command can, but does not have to, use the infix arguments
in much the same way any command can choose to use or ignore the prefix
arguments. For a suffix command that was invoked from a transient, the
variable ‘ ’ ‘ ’
serve about the same purpose as the variables ‘ ’
‘ ’
arguments have been set using a command such as ‘ ’
The information shown in the popup buffer while a transient is active
looks a bit like this:
,-----------------------------------------
|Arguments
| -f Force (--force)
| -a Annotate (--annotate)
|
|Create
| t tag
| r release
`-----------------------------------------
This is a simplified version of ‘ ’
support images or colored text, so the above “screenshot” lacks
some information; in practice you would be able to tell whether the
arguments ‘ ’ ‘ ’
their color.
Transient can be used to implement simple “command dispatchers”. The
main benefit then is that the user can see all the available commands in
a popup buffer. That is useful by itself because it frees the user from
having to remember all the keys that are valid after a certain prefix
key or command. Magit’ ‘ ’ ‘ ’
example of using Transient to merely implement a command dispatcher.
In addition to that, Transient also allows users to interactively
pass arguments to commands. These arguments can be much more complex
than what is reasonable when using prefix arguments. There is a limit
to how many aspects of a command can be controlled using prefix
arguments. Furthermore, what a certain prefix argument means for
different commands can be completely different, and users have to read
documentation to learn and then commit to memory what a certain prefix
argument means to a certain command.
Transient suffix commands, on the other hand, can accept dozens of
different arguments without the user having to remember anything. When
using Transient, one can call a command with arguments that are just as
complex as when calling the same function non-interactively from Lisp.
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Invoking a transient suffix command with arguments is similar to
invoking a command in a shell with command-line completion and history
enabled. One benefit of the Transient interface is that it remembers
history not only on a global level (“this command was invoked using
these arguments, and previously it was invoked using those other
arguments”), but also remembers the values of individual arguments
independently. See *note Using History::.
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After a transient prefix command is invoked, ‘ ’
show the documentation for the infix or suffix command that KEY is bound
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to (see *note Getting Help for Suffix Commands::), and infixes and
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suffixes can be removed from the transient using ‘ ’
and suffixes that are disabled by default can be enabled the same way.
See *note Enabling and Disabling Suffixes::.
Transient ships with support for a few different types of specialized
infix commands. A command that sets a command line option, for example,
has different needs than a command that merely toggles a boolean flag.
Additionally, Transient provides abstractions for defining new types,
which the author of Transient did not anticipate (or didn’
to implementing yet).
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Note that suffix commands also support regular prefix arguments. A
suffix command may even be called with both infix and prefix arguments
at the same time. If you invoke a command as a suffix of a transient
prefix command, but also want to pass prefix arguments to it, then first
invoke the prefix command, and only after doing that invoke the prefix
arguments, before finally invoking the suffix command. If you instead
began by providing the prefix arguments, then those would apply to the
prefix command, not the suffix command. Likewise, if you want to change
infix arguments before invoking a suffix command with prefix arguments,
then change the infix arguments before invoking the prefix arguments.
In other words, regular prefix arguments always apply to the next
command, and since transient prefix, infix and suffix commands are just
regular commands, the same applies to them. (Regular prefix keys behave
differently because they are not commands at all, instead they are just
incomplete key sequences, and those cannot be interrupted with prefix
commands.)
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File: transient.info, Node: Usage, Next: Modifying Existing Transients, Prev: Introduction, Up: Top
2 Usage
*******
* Menu:
* Invoking Transients::
* Aborting and Resuming Transients::
* Common Suffix Commands::
* Saving Values::
* Using History::
* Getting Help for Suffix Commands::
* Enabling and Disabling Suffixes::
* Other Commands::
* Configuration::
File: transient.info, Node: Invoking Transients, Next: Aborting and Resuming Transients, Up: Usage
2.1 Invoking Transients
=======================
A transient prefix command is invoked like any other command by pressing
the key that is bound to that command. The main difference to other
commands is that a transient prefix command activates a transient
keymap, which temporarily binds the transient’
commands. Bindings from other keymaps may, or may not, be disabled
while the transient state is in effect.
There are two kinds of commands that are available after invoking a
transient prefix command; infix and suffix commands. Infix commands set
some value (which is then shown in a popup buffer), without leaving the
transient. Suffix commands, on the other hand, usually quit the
transient and they may use the values set by the infix commands, i.e.,
the infix *arguments*.
Instead of setting arguments to be used by a suffix command, infix
commands may also set some value by side-effect, e.g., by setting the
value of some variable.
File: transient.info, Node: Aborting and Resuming Transients, Next: Common Suffix Commands, Prev: Invoking Transients, Up: Usage
2.2 Aborting and Resuming Transients
====================================
To quit the transient without invoking a suffix command press ‘ ’
Key bindings in transient keymaps may be longer than a single event.
After pressing a valid prefix key, all commands whose bindings do not
begin with that prefix key are temporarily unavailable and grayed out.
To abort the prefix key press ‘ ’
prefix key, but not the complete transient).
A transient prefix command can be bound as a suffix of another
transient. Invoking such a suffix replaces the current transient state
with a new transient state, i.e., the available bindings change and the
information displayed in the popup buffer is updated accordingly.
Pressing ‘ ’
innermost transient, causing a return to the previous transient.
‘ ’ ‘ ’
use the latter, then you can later resume the stack of transients using
‘ ’
‘ ’ ‘ ’
‘ ’ ‘ ’
This key quits the currently active incomplete key sequence, if
any, or else the current transient. When quitting the current
transient, it returns to the previous transient, if any.
Transient’ ‘ ’ ‘ ’
command. To learn how to get that binding back see
‘ ’ ’
‘ ’ ‘ ’
This command quits the currently active incomplete key sequence, if
any, and all transients, including the active transient and all
suspended transients, if any.
‘ ’ ‘ ’
Like ‘ ’
sequence, if any, and all transients. Additionally, it saves the
stack of transients so that it can easily be resumed (which is
particularly useful if you quickly need to do “something else” and
the stack is deeper than a single transient, and/or you have
already changed the values of some infix arguments).
Note that only a single stack of transients can be saved at a time.
If another stack is already saved, then saving a new stack discards
the previous stack.
‘ ’
This command resumes the previously suspended stack of transients,
if any.
File: transient.info, Node: Common Suffix Commands, Next: Saving Values, Prev: Aborting and Resuming Transients, Up: Usage
2.3 Common Suffix Commands
==========================
A few shared suffix commands are available in all transients. These
suffix commands are not shown in the popup buffer by default.
This includes the aborting commands mentioned in the previous
section, as well as some other commands that are all bound to ‘ ’
After ‘ ’
temporarily shown in the popup buffer. After invoking one of them, the
section disappears again. Note, however, that one of these commands is
described as “Show common permanently”; invoke that if you want the
common commands to always be shown for all transients.
‘ ’ ‘ ’
This command toggles whether the generic commands that are common
to all transients are always displayed or only after typing the
incomplete prefix key sequence ‘ ’
current Emacs session.
-- User Option: transient-show-common-commands
This option controls whether shared suffix commands are shown
alongside the transient-specific infix and suffix commands. By
default, the shared commands are not shown to avoid overwhelming
the user with too many options.
While a transient is active, pressing ‘ ’
commands. The value of this option can be changed for the current
Emacs session by typing ‘ ’
The other common commands are described in either the previous or in
one of the following sections.
Some of Transient’
of Magit-Popup; see *note FAQ:: for more information.
File: transient.info, Node: Saving Values, Next: Using History, Prev: Common Suffix Commands, Up: Usage
2.4 Saving Values
=================
After setting the infix arguments in a transient, the user can save
those arguments for future invocations.
Most transients will start out with the saved arguments when they are
invoked. There are a few exceptions, though. Some transients are
designed so that the value that they use is stored externally as the
buffer-local value of some variable. Invoking such a transient again
uses the buffer-local value. (1)
If the user does not save the value and just exits using a regular
suffix command, then the value is merely saved to the transient’
history. That value won’
but it is easily accessible (see *note Using History::).
‘ ’ ‘ ’
This command saves the value of the active transient for this Emacs
session.
‘ ’ ‘ ’
Save the value of the active transient persistently across Emacs
sessions.
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‘ ’ ‘ ’
Clear the set and saved values of the active transient.
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-- User Option: transient-values-file
This option names the file that is used to persist the values of
transients between Emacs sessions.
---------- Footnotes ----------
(1) ‘ ’ ‘ ’
their handling of buffer-local values is actually a bit more complicated
than outlined above and even customizable.
File: transient.info, Node: Using History, Next: Getting Help for Suffix Commands, Prev: Saving Values, Up: Usage
2.5 Using History
=================
Every time the user invokes a suffix command the transient’
value is saved to its history. These values can be cycled through the
same way one can cycle through the history of commands that read
user-input in the minibuffer.
‘ ’ ‘ ’
‘ ’
This command switches to the previous value used for the active
transient.
‘ ’ ‘ ’
‘ ’
This command switches to the next value used for the active
transient.
In addition to the transient-wide history, Transient of course
supports per-infix history. When an infix reads user-input using the
minibuffer, the user can use the regular minibuffer history commands to
cycle through previously used values. Usually the same keys as those
mentioned above are bound to those commands.
Authors of transients should arrange for different infix commands
that read the same kind of value to also use the same history key (see
*note Suffix Slots::).
Both kinds of history are saved to a file when Emacs is exited.
-- User Option: transient-history-file
This option names the file that is used to persist the history of
transients and their infixes between Emacs sessions.
-- User Option: transient-history-limit
This option controls how many history elements are kept at the time
the history is saved in ‘ ’
File: transient.info, Node: Getting Help for Suffix Commands, Next: Enabling and Disabling Suffixes, Prev: Using History, Up: Usage
2.6 Getting Help for Suffix Commands
====================================
Transients can have many suffixes and infixes that the user might not be
familiar with. To make it trivial to get help for these, Transient
provides access to the documentation directly from the active transient.
‘ ’ ‘ ’
This command enters help mode. When help mode is active, typing a
key shows information about the suffix command that the key
normally is bound to (instead of invoking it). Pressing ‘ ’
second time shows information about the _prefix_ command.
After typing a key, the stack of transient states is suspended and
information about the suffix command is shown instead. Typing ‘ ’
in the help buffer buries that buffer and resumes the transient
state.
What sort of documentation is shown depends on how the transient was
defined. For infix commands that represent command-line arguments this
ideally shows the appropriate manpage. ‘ ’
jump to the correct location within that. Info manuals are also
supported. The fallback is to show the command’
non-infix suffixes this is usually appropriate.
File: transient.info, Node: Enabling and Disabling Suffixes, Next: Other Commands, Prev: Getting Help for Suffix Commands, Up: Usage
2.7 Enabling and Disabling Suffixes
===================================
The user base of a package that uses transients can be very diverse.
This is certainly the case for Magit; some users have been using it and
Git for a decade, while others are just getting started now.
For that reason a mechanism is needed that authors can use to
classify a transient’
essentials...everything spectrum. We use the term “levels” to describe
that mechanism.
Each suffix command is placed on a level and each transient has a
level (called “transient-level”), which controls which suffix commands
are available. Integers between 1 and 7 (inclusive) are valid levels.
For suffixes, 0 is also valid; it means that the suffix is not displayed
at any level.
The levels of individual transients and/or their individual suffixes
can be changed interactively, by invoking the transient and then
pressing ‘ ’
The default level for both transients and their suffixes is 4. The
‘ ’
transients. The default suffix level is always 4. The authors of
transients should place certain suffixes on a higher level, if they
expect that it won’
important suffixes on a lower level, so that they remain available even
if the user lowers the transient level.
-- User Option: transient-default-level
This option controls which suffix levels are made available by
default. It sets the transient-level for transients for which the
user has not set that individually.
-- User Option: transient-levels-file
This option names the file that is used to persist the levels of
transients and their suffixes between Emacs sessions.
‘ ’ ‘ ’
This command enters edit mode. When edit mode is active, then all
infixes and suffixes that are currently usable are displayed along
with their levels. The colors of the levels indicate whether they
are enabled or not. The level of the transient is also displayed
along with some usage information.
In edit mode, pressing the key that would usually invoke a certain
suffix instead prompts the user for the level that suffix should be
placed on.
Help mode is available in edit mode.
To change the transient level press ‘ ’
To exit edit mode press ‘ ’
Note that edit mode does not display any suffixes that are not
currently usable. ‘ ’
suffixes depending on whether a rebase is already in progress or
not. The predicates also apply in edit mode.
Therefore, to control which suffixes are available given a certain
state, you have to make sure that that state is currently active.
File: transient.info, Node: Other Commands, Next: Configuration, Prev: Enabling and Disabling Suffixes, Up: Usage
2.8 Other Commands
==================
When invoking a transient in a small frame, the transient window may not
show the complete buffer, making it necessary to scroll, using the
following commands. These commands are never shown in the transient
window, and the key bindings are the same as for ‘ ’
‘ ’
-- Command: transient-scroll-up arg
This command scrolls text of transient popup window upward ARG
lines. If ARG is ‘ ’
a wrapper around ‘ ’
-- Command: transient-scroll-down arg
This command scrolls text of transient popup window down ARG lines.
If ARG is ‘ ’
wrapper around ‘ ’
File: transient.info, Node: Configuration, Prev: Other Commands, Up: Usage
2.9 Configuration
=================
More options are described in *note Common Suffix Commands::, in *note
Saving Values::, in *note Using History:: and in *note Enabling and
Disabling Suffixes::.
Essential Options
-----------------
Also see *note Common Suffix Commands::.
-- User Option: transient-show-popup
This option controls whether the current transient’
suffix commands are shown in the popup buffer.
• If ‘ ’
a transient prefix command is invoked.
• If ‘ ’
explicitly requests it, by pressing an incomplete prefix key
sequence.
• If a number, then the a brief one-line summary is shown
instead of the popup buffer. If zero or negative, then not
even that summary is shown; only the pressed key itself is
shown.
The popup is shown when the user explicitly requests it by
pressing an incomplete prefix key sequence. Unless this is
zero, the popup is shown after that many seconds of inactivity
(using the absolute value).
-- User Option: transient-enable-popup-navigation
This option controls whether navigation commands are enabled in the
transient popup buffer.
While a transient is active the transient popup buffer is not the
current buffer, making it necessary to use dedicated commands to
act on that buffer itself. This is disabled by default. If this
option is non-‘ ’
• ‘ ’
• ‘ ’
• ‘ ’
• ‘ ’
• ‘ ’ ‘ ’
-- User Option: transient-display-buffer-action
This option specifies the action used to display the transient
popup buffer. The transient popup buffer is displayed in a window
using ‘ ’
The value of this option has the form ‘ ’
FUNCTION is a function or a list of functions. Each such function
should accept two arguments: a buffer to display and an alist of
the same form as ALIST. See *note (elisp)Choosing Window::, for
details.
The default is:
(display-buffer-in-side-window
(side . bottom)
(inhibit-same-window . t)
(window-parameters (no-other-window . t)))
This displays the window at the bottom of the selected frame.
Another useful FUNCTION is ‘ ’
is what ‘ ’
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*note (elisp)Buffer Display Action Functions::, and *note
(elisp)Buffer Display Action Alists::.
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Note that the buffer that was current before the transient buffer
is shown should remain the current buffer. Many suffix commands
act on the thing at point, if appropriate, and if the transient
buffer became the current buffer, then that would change what is at
point. To that effect ‘ ’
selected window is not used to show the transient buffer.
It may be possible to display the window in another frame, but
whether that works in practice depends on the window-manager. If
the window manager selects the new window (Emacs frame), then that
unfortunately changes which buffer is current.
If you change the value of this option, then you might also want to
change the value of ‘ ’
Accessibility Options
---------------------
-- User Option: transient-force-single-column
This option controls whether the use of a single column to display
suffixes is enforced. This might be useful for users with low
vision who use large text and might otherwise have to scroll in two
dimensions.
Auxiliary Options
-----------------
-- User Option: transient-mode-line-format
This option controls whether the transient popup buffer has a
mode-line, separator line, or neither.
If ‘ ’
displayed right above the echo area, then this probably is not a
good value.
If ‘ ’
a thin line is drawn instead, using the background color of the
face ‘ ’
lines, and therefore fall back to treating ‘ ’ ‘ ’
Otherwise this can be any mode-line format. See *note (elisp)Mode
Line Format::, for details.
-- User Option: transient-semantic-coloring
This option controls whether prefixes and suffixes are colored in a
Hydra-like fashion.
If non-‘ ’
indicate whether it exits the transient state or not. The color of
the prefix is indicated using the line that is drawn when the value
of ‘ ’ ‘ ’
For more information about how Hydra uses colors see
<https://github.com/abo-abo/hydra#color> and
<https://oremacs.com/2015/02/19/hydra-colors-reloaded>.
-- User Option: transient-highlight-mismatched-keys
This option controls whether key bindings of infix commands that do
not match the respective command-line argument should be
highlighted. For other infix commands this option has no effect.
When this option is non-‘ ’
argument is highlighted when only a long argument (e.g.,
‘ ’ ‘ ’
rare case that a shorthand is specified but the key binding does
not match, then it is highlighted differently.
Highlighting mismatched key bindings is useful when learning the
arguments of the underlying command-line tool; you wouldn’
learn any short-hands that do not actually exist.
The highlighting is done using one of the faces
‘ ’ ‘ ’
-- User Option: transient-substitute-key-function
This function is used to modify key bindings. If the value of this
option is ‘ ’
This function is called with one argument, the prefix object, and
must return a key binding description, either the existing key
description it finds in the ‘ ’
replaces the prefix key. It could be used to make other
substitutions, but that is discouraged.
For example, ‘ ’
so I substitute ‘ ’
optimized for lisp.
(setq transient-substitute-key-function
(lambda (obj)
(let ((key (oref obj key)))
(if (string-match "\\`\\(=\\)[a-zA-Z]" key)
(replace-match "(" t t key 1)
key))))
-- User Option: transient-read-with-initial-input
This option controls whether the last history element is used as
the initial minibuffer input when reading the value of an infix
argument from the user. If ‘ ’
the first element has to be accessed the same way as the older
elements.
-- User Option: transient-hide-during-minibuffer-read
This option controls whether the transient buffer is hidden while
user input is being read in the minibuffer.
-- User Option: transient-align-variable-pitch
This option controls whether columns are aligned pixel-wise in the
popup buffer.
If this is non-‘ ’
support variable-pitch fonts. Keys are not aligned, so you should
use a fixed-pitch font for the ‘ ’
faces inherit from that face unless a theme is used that breaks
that relationship.
This option is intended for users who use a variable-pitch font for
the ‘ ’
-- User Option: transient-force-fixed-pitch
This option controls whether to force the use of a monospaced font
in popup buffer. Even if you use a proportional font for the
‘ ’
transient’ ‘ ’
‘ ’ ‘ ’
Developer Options
-----------------
These options are mainly intended for developers.
-- User Option: transient-detect-key-conflicts
This option controls whether key binding conflicts should be
detected at the time the transient is invoked. If so, this results
in an error, which prevents the transient from being used. Because
of that, conflicts are ignored by default.
Conflicts cannot be determined earlier, i.e., when the transient is
being defined and when new suffixes are being added, because at
that time there can be false-positives. It is actually valid for
multiple suffixes to share a common key binding, provided the
predicates of those suffixes prevent that more than one of them is
enabled at a time.
-- User Option: transient-highlight-higher-levels
This option controls whether suffixes that would not be available
by default are highlighted.
When non-‘ ’
their level is above 4, the default of ‘ ’
Assuming you have set that variable to 7, this highlights all
suffixes that won’
same customization.
File: transient.info, Node: Modifying Existing Transients, Next: Defining New Commands, Prev: Usage, Up: Top
3 Modifying Existing Transients
*******************************
To an extent, transients can be customized interactively, see *note
Enabling and Disabling Suffixes::. This section explains how existing
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transients can be further modified non-interactively. Let’
an example:
(transient-append-suffix 'magit-patch-apply "-3"
'("-R" "Apply in reverse" "--reverse"))
This inserts a new infix argument to toggle the ‘ ’
after the infix argument that toggles ‘ ’ ‘ ’
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The following functions share a few arguments:
• PREFIX is a transient prefix command, a symbol.
• SUFFIX is a transient infix or suffix specification in the same
form as expected by ‘ ’
is a special kind of suffix. Depending on context “suffixes” means
“suffixes (including infixes)” or “non-infix suffixes”. Here it
means the former. See *note Suffix Specifications::.
SUFFIX may also be a group in the same form as expected by
‘ ’
• LOC is a command, a key vector, a key description (a string as
returned by ‘ ’
(the last element may also be a command or key). For example ‘
-1)’ ‘ ’ ‘ ’
of the second group (‘ ’
If LOC is a list of coordinates, then it can be used to identify a
group, not just an individual suffix command.
The function ‘ ’
whether a certain coordination list identifies the suffix or group
that you expect it to identify. In hairy cases it may be necessary
to look at the definition of the transient prefix command.
These functions operate on the information stored in the
‘ ’
that tree are not objects but have the form ‘ ’
PLIST should set at least ‘ ’ ‘ ’ ‘ ’
-- Function: transient-insert-suffix prefix loc suffix &optional
keep-other
-- Function: transient-append-suffix prefix loc suffix &optional
keep-other
These functions insert the suffix or group SUFFIX into PREFIX
before or after LOC.
Conceptually adding a binding to a transient prefix is similar to
adding a binding to a keymap, but this is complicated by the fact
that multiple suffix commands can be bound to the same key,
provided they are never active at the same time, see *note
Predicate Slots::.
Unfortunately both false-positives and false-negatives are
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possible. To deal with the former use non-‘ ’
deal with the latter remove the conflicting binding explicitly.
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-- Function: transient-replace-suffix prefix loc suffix
This function replaces the suffix or group at LOC in PREFIX with
suffix or group SUFFIX.
-- Function: transient-remove-suffix prefix loc
This function removes the suffix or group at LOC in PREFIX.
-- Function: transient-get-suffix prefix loc
This function returns the suffix or group at LOC in PREFIX. The
returned value has the form mentioned above.
-- Function: transient-suffix-put prefix loc prop value
This function edits the suffix or group at LOC in PREFIX, by
setting the PROP of its plist to VALUE.
Most of these functions do not signal an error if they cannot perform
the requested modification. The functions that insert new suffixes show
a warning if LOC cannot be found in PREFIX without signaling an error.
The reason for doing it like this is that establishing a key binding
(and that is what we essentially are trying to do here) should not
prevent the rest of the configuration from loading. Among these
functions only ‘ ’ ‘ ’
signal an error.
File: transient.info, Node: Defining New Commands, Next: Classes and Methods, Prev: Modifying Existing Transients, Up: Top
4 Defining New Commands
***********************
* Menu:
* Defining Transients::
* Binding Suffix and Infix Commands::
* Defining Suffix and Infix Commands::
* Using Infix Arguments::
* Transient State::
File: transient.info, Node: Defining Transients, Next: Binding Suffix and Infix Commands, Up: Defining New Commands
4.1 Defining Transients
=======================
A transient consists of a prefix command and at least one suffix
command, though usually a transient has several infix and suffix
commands. The below macro defines the transient prefix command *and*
binds the transient’
defines the complete transient, not just the transient prefix command
that is used to invoke that transient.
-- Macro: transient-define-prefix name arglist [docstring] [keyword
value]... group... [body...]
This macro defines NAME as a transient prefix command and binds the
transient’
ARGLIST are the arguments that the prefix command takes. DOCSTRING
is the documentation string and is optional.
These arguments can optionally be followed by keyword-value pairs.
Each key has to be a keyword symbol, either ‘ ’
argument supported by the constructor of that class. The
‘ ’
explicitly.
GROUPs add key bindings for infix and suffix commands and specify
how these bindings are presented in the popup buffer. At least one
GROUP has to be specified. See *note Binding Suffix and Infix
Commands::.
The BODY is optional. If it is omitted, then ARGLIST is ignored
and the function definition becomes:
(lambda ()
(interactive)
(transient-setup 'NAME))
If BODY is specified, then it must begin with an ‘ ’
that matches ARGLIST, and it must call ‘ ’
however, call that function only when some condition is satisfied.
All transients have a (possibly ‘ ’
when suffix commands are called, so that they can consume that
value. For some transients it might be necessary to have a sort of
secondary value, called a “scope”. Such a scope would usually be
set in the command’ ‘ ’
setup function:
(transient-setup 'NAME nil nil :scope SCOPE)
For example, the scope of the ‘ ’
the branch whose variables are being configured.
File: transient.info, Node: Binding Suffix and Infix Commands, Next: Defining Suffix and Infix Commands, Prev: Defining Transients, Up: Defining New Commands
4.2 Binding Suffix and Infix Commands
=====================================
The macro ‘ ’
defines the actual transient prefix command (see *note Defining
Transients::) and adds the transient’
described below.
Users and third-party packages can add additional bindings using
functions such as ‘ ’
Existing Transients::). These functions take a “suffix specification”
as one of their arguments, which has the same form as the specifications
used in ‘ ’
* Menu:
* Group Specifications::
* Suffix Specifications::
File: transient.info, Node: Group Specifications, Next: Suffix Specifications, Up: Binding Suffix and Infix Commands
4.2.1 Group Specifications
--------------------------
The suffix and infix commands of a transient are organized in groups.
The grouping controls how the descriptions of the suffixes are outlined
visually but also makes it possible to set certain properties for a set
of suffixes.
Several group classes exist, some of which organize suffixes in
subgroups. In most cases the class does not have to be specified
explicitly, but see *note Group Classes::.
Groups are specified in the call to ‘ ’
vectors. Because groups are represented using vectors, we cannot use
square brackets to indicate an optional element and instead use curly
brackets to do the latter.
Group specifications then have this form:
[{LEVEL} {DESCRIPTION} {KEYWORD VALUE}... ELEMENT...]
The LEVEL is optional and defaults to 4. See *note Enabling and
Disabling Suffixes::.
The DESCRIPTION is optional. If present, it is used as the heading
of the group.
The KEYWORD-VALUE pairs are optional. Each keyword has to be a
keyword symbol, either ‘ ’
constructor of that class.
• One of these keywords, ‘ ’
DESCRIPTION at the very beginning of the vector. The
recommendation is to use ‘ ’
also used, for consistency, or DESCRIPTION otherwise, because it
looks better.
• Likewise ‘ ’
• Other important keywords include the ‘ ’
keywords control whether the group is available in a certain
situation.
For example, one group of the ‘ ’ ‘
magit-rebase-in-progress-p’
useful while rebase is already in progress; and another that uses
‘ ’
that initiate a rebase.
These predicates can also be used on individual suffixes and are
only documented once, see *note Predicate Slots::.
• The value of ‘ ’ ‘ ’
whether the group is hidden by default. The key bindings for
suffixes of a hidden group should all use the same prefix key.
Pressing that prefix key should temporarily show the group and its
suffixes, which assumes that a predicate like this is used:
(lambda ()
(eq (car transient--redisplay-key)
?\C-c)) ; the prefix key shared by all bindings
• The value of ‘ ’ ‘ ’
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takes one argument, a potentially list of children, and must return
a list of children or an empty list. This can either be used to
somehow transform the group’
way, or to dynamically create the children from scratch.
The returned children must have the same form as stored in the
prefix’ ‘ ’
convenient to use the same form as understood by
‘ ’
approach, you can use the ‘ ’
‘ ’
convenient to the expected form.
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• The boolean ‘ ’
suffixes contained in a group are right padded, effectively
aligning the descriptions.
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The ELEMENTs are either all subgroups, or all suffixes and strings.
(At least currently no group type exists that would allow mixing
subgroups with commands at the same level, though in principle there is
nothing that prevents that.)
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If the ELEMENTs are not subgroups, then they can be a mixture of
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lists that specify commands and strings. Strings are inserted verbatim
into the buffer. The empty string can be used to insert gaps between
suffixes, which is particularly useful if the suffixes are outlined as a
table.
Inside group specifications, including inside contained suffix
specifications, nothing has to be quoted and quoting anyway is invalid.
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The value following a keyword, can be explicitly unquoted using ‘ ’
This feature is experimental and should be avoided.
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The form of suffix specifications is documented in the next node.
File: transient.info, Node: Suffix Specifications, Prev: Group Specifications, Up: Binding Suffix and Infix Commands
4.2.2 Suffix Specifications
---------------------------
A transient’
prefix command is defined using ‘ ’
Defining Transients::. The commands are organized into groups, see
*note Group Specifications::. Here we describe the form used to bind an
individual suffix command.
The same form is also used when later binding additional commands
using functions such as ‘ ’
Existing Transients::.
Note that an infix is a special kind of suffix. Depending on context
“suffixes” means “suffixes (including infixes)” or “non-infix suffixes”.
Here it means the former.
Suffix specifications have this form:
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([LEVEL] [KEY [DESCRIPTION]] COMMAND|ARGUMENT [KEYWORD VALUE]...)
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LEVEL, KEY and DESCRIPTION can also be specified using the KEYWORDs
‘ ’ ‘ ’ ‘ ’
with COMMAND sets these properties, then they do not have to be
specified here. You can however specify them here anyway, possibly
overriding the object’
transient.
• LEVEL is the suffix level, an integer between 1 and 7. See *note
Enabling and Disabling Suffixes::.
• KEY is the key binding, either a vector or key description string.
• DESCRIPTION is the description, either a string or a function that
returns a string. The function should be a lambda expression to
avoid ambiguity. In some cases a symbol that is bound as a
function would also work but to be safe you should use
‘ ’
The next element is either a command or an argument. This is the
only argument that is mandatory in all cases.
• COMMAND should be a symbol that is bound as a function, which has
to be defined or at least autoloaded as a command by the time the
containing prefix command is invoked.
Any command will do; it does not need to have an object associated
with it (as would be the case if ‘ ’
‘ ’
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COMMAND can also be a ‘ ’
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As mentioned above, the object that is associated with a command
can be used to set the default for certain values that otherwise
have to be set in the suffix specification. Therefore if there is
no object, then you have to make sure to specify the KEY and the
DESCRIPTION.
As a special case, if you want to add a command that might be
neither defined nor autoloaded, you can use a workaround like:
(transient-insert-suffix 'some-prefix "k"
'("!" "Ceci n'est pas une commande" no-command
:if (lambda () (featurep 'no-library))))
Instead of ‘ ’ ‘ ’ ‘ ’
value for NOERROR.
• The mandatory argument can also be a command-line argument, a
string. In that case an anonymous command is defined and bound.
Instead of a string, this can also be a list of two strings, in
which case the first string is used as the short argument (which
can also be specified using ‘ ’
argument (which can also be specified using ‘ ’
Only the long argument is displayed in the popup buffer. See
‘ ’
used.
Unless the class is specified explicitly, the appropriate class is
guessed based on the long argument. If the argument ends with ‘ ’
(e.g., ‘ ’ ‘ ’
‘ ’
Finally, details can be specified using optional KEYWORD-VALUE pairs.
Each keyword has to be a keyword symbol, either ‘ ’
argument supported by the constructor of that class. See *note Suffix
Slots::.
File: transient.info, Node: Defining Suffix and Infix Commands, Next: Using Infix Arguments, Prev: Binding Suffix and Infix Commands, Up: Defining New Commands
4.3 Defining Suffix and Infix Commands
======================================
Note that an infix is a special kind of suffix. Depending on context
“suffixes” means “suffixes (including infixes)” or “non-infix suffixes”.
-- Macro: transient-define-suffix name arglist [docstring] [keyword
value]... body...
This macro defines NAME as a transient suffix command.
ARGLIST are the arguments that the command takes. DOCSTRING is the
documentation string and is optional.
These arguments can optionally be followed by keyword-value pairs.
Each keyword has to be a keyword symbol, either ‘ ’
keyword argument supported by the constructor of that class. The
‘ ’
explicitly.
The BODY must begin with an ‘ ’
ARGLIST. The infix arguments are usually accessed by using
‘ ’ ‘ ’
-- Macro: transient-define-infix name arglist [docstring] [keyword
value]...
This macro defines NAME as a transient infix command.
ARGLIST is always ignored (but mandatory never-the-less) and
reserved for future use. DOCSTRING is the documentation string and
is optional.
The keyword-value pairs are mandatory. All transient infix
commands are ‘ ’ ‘ ’
meaningless to define an infix command without also setting at
least ‘ ’
used class, usually ‘ ’ ‘ ’
Each keyword has to be a keyword symbol, either ‘ ’
keyword argument supported by the constructor of that class. The
‘ ’
explicitly.
The function definition is always:
(lambda ()
(interactive)
(let ((obj (transient-suffix-object)))
(transient-infix-set obj (transient-infix-read obj)))
(transient--show))
‘ ’ ‘ ’
functions. Different infix commands behave differently because the
concrete methods are different for different infix command classes.
In rare cases the above command function might not be suitable,
even if you define your own infix command class. In that case you
have to use ‘ ’
and use ‘ ’ ‘ ’
-- Macro: transient-define-argument name arglist [docstring] [keyword
value]...
This macro defines NAME as a transient infix command.
This is an alias for ‘ ’
to define an infix command that actually sets an infix argument.
To define an infix command that, for example, sets a variable, use
‘ ’
File: transient.info, Node: Using Infix Arguments, Next: Transient State, Prev: Defining Suffix and Infix Commands, Up: Defining New Commands
4.4 Using Infix Arguments
=========================
The functions and the variables described below allow suffix commands to
access the value of the transient from which they were invoked; which is
the value of its infix arguments. These variables are set when the user
invokes a suffix command that exits the transient, but before actually
calling the command.
When returning to the command-loop after calling the suffix command,
the arguments are reset to ‘ ’
‘ ’
Like for Emacs’
to access the infix arguments inside the command’ ‘ ’
The preferred way of doing that is to call the ‘ ’
function, which for infix arguments serves about the same purpose as
‘ ’
-- Function: transient-args prefix
This function returns the value of the transient prefix command
PREFIX.
If the current command was invoked from the transient prefix
command PREFIX, then it returns the active infix arguments. If the
current command was not invoked from PREFIX, then it returns the
set, saved or default value for PREFIX.
-- Function: transient-arg-value arg args
This function return the value of ARG as it appears in ARGS.
For a switch a boolean is returned. For an option the value is
returned as a string, using the empty string for the empty value,
or ‘ ’
-- Function: transient-suffixes prefix
This function returns the suffixes of the transient prefix command
PREFIX. This is a list of objects. This function should only be
used if you need the objects (as opposed to just their values) and
if the current command is not being invoked from PREFIX.
-- Variable: transient-current-suffixes
The suffixes of the transient from which this suffix command was
invoked. This is a list of objects. Usually it is sufficient to
instead use the function ‘ ’
values. In complex cases it might be necessary to use this
variable instead, i.e., if you need access to information beside
the value.
-- Variable: transient-current-prefix
The transient from which this suffix command was invoked. The
returned value is a ‘ ’
information associated with the transient prefix command.
-- Variable: transient-current-command
The transient from which this suffix command was invoked. The
returned value is a symbol, the transient prefix command.
File: transient.info, Node: Transient State, Prev: Using Infix Arguments, Up: Defining New Commands
4.5 Transient State
===================
Invoking a transient prefix command “activates” the respective
transient, i.e., it puts a transient keymap into effect, which binds the
transient’
The default behavior while a transient is active is as follows:
• Invoking an infix command does not affect the transient state; the
transient remains active.
• Invoking a (non-infix) suffix command “deactivates” the transient
state by removing the transient keymap and performing some
additional cleanup.
• Invoking a command that is bound in a keymap other than the
transient keymap is disallowed and trying to do so results in a
warning. This does not “deactivate” the transient.
But these are just the defaults. Whether a certain command
deactivates or “exits” the transient is configurable. There is more
than one way in which a command can be “transient” or “non-transient”;
the exact behavior is implemented by calling a so-called “pre-command”
function. Whether non-suffix commands are allowed to be called is
configurable per transient.
• The transient-ness of suffix commands (including infix commands) is
controlled by the value of their ‘ ’
either when defining the command or when adding a binding to a
transient while defining the respective transient prefix command.
Valid values are booleans and the pre-commands described below.
• ‘ ’ ‘ ’
• ‘ ’ ‘ ’
• If ‘ ’
for non-infix suffixes) then the value of the prefix’
‘ ’
that slot is ‘ ’ ’ ‘ ’
unbound is essentially equivalent to it being ‘ ’
• A suffix command can be a prefix command itself, i.e., a
“sub-prefix”. While a sub-prefix is active we nearly always want
‘ ’
cases this may not be desirable, and that makes the following
complication necessary:
For ‘ ’ ‘ ’
can ignore that for the most part because, as stated above, ‘ ’
and the slot being unbound are equivalent, and mean “do exit”.
That isn’
For such suffixes unbound means “do exit but allow going back”,
which is the default, while ‘ ’
which requires that slot to be explicitly set to that value.
• The transient-ness of certain built-in suffix commands is specified
using ‘ ’
binds commands to pre-commands (as opposed to keys to commands) and
takes precedence over the ‘ ’
The available pre-command functions are documented below. They are
called by ‘ ’ ‘ ’
the value that they return determines whether the transient is exited.
To do so the value of one of the constants ‘ ’
‘ ’ ’ ‘ ’
means “exit” or “stay”).
Additionally, these functions may change the value of ‘ ’
(which explains why they have to be called using ‘ ’
call ‘ ’ ‘ ’
‘ ’ ‘ ’
‘ ’ ‘ ’
Pre-commands for Infixes
------------------------
The default for infixes is ‘ ’
function that makes sense for infixes.
-- Function: transient--do-stay
Call the command without exporting variables and stay transient.
Pre-commands for Suffixes
-------------------------
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By default, invoking a suffix causes the transient to be exited.
If you want a different default behavior for a certain transient
prefix command, then set its ‘ ’
a boolean, answering the question "does the transient stay active, when
a suffix command is invoked?" ‘ ’
active, while ‘ ’
In either case, the exact behavior depends on whether the suffix is
itself a prefix (i.e., a sub-prefix), an infix or a regular suffix.
The behavior for an individual suffix command can be changed by
setting its ‘ ’
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-- Function: transient--do-exit
Call the command after exporting variables and exit the transient.
-- Function: transient--do-return
Call the command after exporting variables and return to parent
prefix. If there is no parent prefix, then call
‘ ’
-- Function: transient--do-call
Call the command after exporting variables and stay transient.
The following pre-commands are suitable for sub-prefixes. Only the
first should ever explicitly be set as the value of the ‘ ’
slot.
-- Function: transient--do-recurse
Call the transient prefix command, preparing for return to active
transient.
Whether we actually return to the parent transient is ultimately
under the control of each invoked suffix. The difference between
this pre-command and ‘ ’
value of the ‘ ’ ‘ ’
If there is no parent transient, then only call this command and
skip the second step.
-- Function: transient--do-replace
Call the transient prefix command, replacing the active transient.
Unless ‘ ’
is automatically used for suffixes that are prefixes themselves,
i.e., for sub-prefixes.
-- Function: transient--do-suspend
Suspend the active transient, saving the transient stack.
This is used by the command ‘ ’
by “external events” such as ‘ ’
should be added to ‘ ’
Pre-commands for Non-Suffixes
-----------------------------
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By default, non-suffixes (commands that are bound in other keymaps
beside the transient keymap) cannot be invoked. Trying to invoke such a
command results in a warning and the transient stays active.
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If you want a different behavior, then set the
‘ ’
can be a boolean, answering the question, "is it allowed to invoke
non-suffix commands?"
If the value is ‘ ’ ‘ ’
invoked, when it is ‘ ’ ‘ ’
they cannot be invoked.
The only other recommended value is ‘ ’
is used, then non-suffixes can be invoked, but if one is invoked, then
that exits the transient.
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-- Function: transient--do-warn
Call ‘ ’
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-- Function: transient--do-stay
Call the command without exporting variables and stay transient.
-- Function: transient--do-leave
Call the command without exporting variables and exit the
transient.
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Special Pre-Commands
--------------------
-- Function: transient--do-quit-one
If active, quit help or edit mode, else exit the active transient.
This is used when the user pressed ‘ ’
-- Function: transient--do-quit-all
Exit all transients without saving the transient stack.
This is used when the user pressed ‘ ’
-- Function: transient--do-suspend
Suspend the active transient, saving the transient stack.
This is used when the user pressed ‘ ’
File: transient.info, Node: Classes and Methods, Next: Related Abstractions and Packages, Prev: Defining New Commands, Up: Top
5 Classes and Methods
*********************
Transient uses classes and generic functions to make it possible to
define new types of suffix commands that are similar to existing types,
but behave differently in some aspects. It does the same for groups and
prefix commands, though at least for prefix commands that *currently*
appears to be less important.
Every prefix, infix and suffix command is associated with an object,
which holds information that controls certain aspects of its behavior.
This happens in two ways.
• Associating a command with a certain class gives the command a
type. This makes it possible to use generic functions to do
certain things that have to be done differently depending on what
type of command it acts on.
That in turn makes it possible for third-parties to add new types
without having to convince the maintainer of Transient that that
new type is important enough to justify adding a special case to a
dozen or so functions.
• Associating a command with an object makes it possible to easily
store information that is specific to that particular command.
Two commands may have the same type, but obviously their key
bindings and descriptions still have to be different, for example.
The values of some slots are functions. The ‘ ’
example holds a function that is used to read a new value for an
infix command. The values of such slots are regular functions.
Generic functions are used when a function should do something
different based on the type of the command, i.e., when all commands
of a certain type should behave the same way but different from the
behavior for other types. Object slots that hold a regular
function as value are used when the task that they perform is
likely to differ even between different commands of the same type.
* Menu:
* Group Classes::
* Group Methods::
* Prefix Classes::
* Suffix Classes::
* Suffix Methods::
* Prefix Slots::
* Suffix Slots::
* Predicate Slots::
File: transient.info, Node: Group Classes, Next: Group Methods, Up: Classes and Methods
5.1 Group Classes
=================
The type of a group can be specified using the ‘ ’
beginning of the class specification, e.g., ‘
...]’ ‘ ’
• The abstract ‘ ’
‘ ’
‘ ’
This class exists because the elements (or “children”) of certain
groups can be other groups instead of suffix and infix commands.
• The abstract ‘ ’
group classes.
• The ‘ ’
This is the default “flat” group. If the class is not specified
explicitly and the first element is not a vector (i.e., not a
group), then this class is used.
This class displays each element on a separate line.
• The ‘ ’
• The ‘ ’
columns.
Direct elements have to be groups whose elements have to be
commands or strings. Each subgroup represents a column. This
class takes care of inserting the subgroups’
This is the default “nested” group. If the class is not specified
explicitly and the first element is a vector (i.e., a group), then
this class is used.
• The ‘ ’
Direct elements have to be groups whose elements have to be
commands or strings. This group inserts an empty line between
subgroups. The subgroups themselves are responsible for displaying
their elements.
File: transient.info, Node: Group Methods, Next: Prefix Classes, Prev: Group Classes, Up: Classes and Methods
5.2 Group Methods
=================
-- Function: transient-setup-children group children
This generic function can be used to setup the children or a group.
The default implementation usually just returns the children
unchanged, but if the ‘ ’ ‘ ’
then it calls that function with CHILDREN as the only argument and
returns the value.
The children are given as a (potentially empty) list consisting of
either group or suffix specifications. These functions can make
arbitrary changes to the children including constructing new
children from scratch.
-- Function: transient--insert-group group
This generic function formats the group and its elements and
inserts the result into the current buffer, which is a temporary
buffer. The contents of that buffer are later inserted into the
popup buffer.
Functions that are called by this function may need to operate in
the buffer from which the transient was called. To do so they can
temporarily make the ‘ ’
File: transient.info, Node: Prefix Classes, Next: Suffix Classes, Prev: Group Methods, Up: Classes and Methods
5.3 Prefix Classes
==================
Currently the ‘ ’
commands and there is only a single generic function that can be
specialized based on the class of a prefix command.
-- Function: transient--history-init obj
This generic function is called while setting up the transient and
is responsible for initializing the ‘ ’
transient-wide history; many individual infixes also have a history
of their own.
The default (and currently only) method extracts the value from the
global variable ‘ ’
A transient prefix command’
‘ ’
is active, a clone of that object is stored in the variable
‘ ’
to the active transient’
File: transient.info, Node: Suffix Classes, Next: Suffix Methods, Prev: Prefix Classes, Up: Classes and Methods
5.4 Suffix Classes
==================
• All suffix and infix classes derive from ‘ ’
in turn derives from ‘ ’
‘ ’
• All infix classes derive from the abstract ‘ ’
which in turn derives from the ‘ ’
Infixes are a special type of suffixes. The primary difference is
that infixes always use the ‘ ’
non-infix suffixes use a variety of pre-commands (see *note
Transient State::). Doing that is most easily achieved by using
this class, though theoretically it would be possible to define an
infix class that does not do so. If you do that then you get to
implement many methods.
Also, infixes and non-infix suffixes are usually defined using
different macros (see *note Defining Suffix and Infix Commands::).
• Classes used for infix commands that represent arguments should be
derived from the abstract ‘ ’
• The ‘ ’
arguments that represent command-line switches (arguments that do
not take a value).
• The ‘ ’
arguments that represent command-line options (arguments that do
take a value).
• The ‘ ’
exclusive command-line switches.
• The ‘ ’ ‘ ’
indicates that all remaining arguments are files.
• Classes used for infix commands that represent variables should
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derived from the abstract ‘ ’
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Magit defines additional classes, which can serve as examples for the
fancy things you can do without modifying Transient. Some of these
classes will likely get generalized and added to Transient. For now
they are very much subject to change and not documented.
File: transient.info, Node: Suffix Methods, Next: Prefix Slots, Prev: Suffix Classes, Up: Classes and Methods
5.5 Suffix Methods
==================
To get information about the methods implementing these generic
functions use ‘ ’
* Menu:
* Suffix Value Methods::
* Suffix Format Methods::
File: transient.info, Node: Suffix Value Methods, Next: Suffix Format Methods, Up: Suffix Methods
5.5.1 Suffix Value Methods
--------------------------
-- Function: transient-init-value obj
This generic function sets the initial value of the object OBJ.
This function is called for all suffix commands, but unless a
concrete method is implemented this falls through to the default
implementation, which is a noop. In other words this usually only
does something for infix commands, but note that this is not
implemented for the abstract class ‘ ’
class derives from that directly, then you must implement a method.
-- Function: transient-infix-read obj
This generic function determines the new value of the infix object
OBJ.
This function merely determines the value; ‘ ’
used to actually store the new value in the object.
For most infix classes this is done by reading a value from the
user using the reader specified by the ‘ ’
‘ ’
For some infix classes the value is changed without reading
anything in the minibuffer, i.e., the mere act of invoking the
infix command determines what the new value should be, based on the
previous value.
-- Function: transient-prompt obj
This generic function returns the prompt to be used to read infix
object OBJ’
-- Function: transient-infix-set obj value
This generic function sets the value of infix object OBJ to VALUE.
-- Function: transient-infix-value obj
This generic function returns the value of the suffix object OBJ.
This function is called by ‘ ’
this function is how the value of a transient is determined so that
the invoked suffix command can use it.
Currently most values are strings, but that is not set in stone.
‘ ’
Usually only infixes have a value, but see the method for
‘ ’
-- Function: transient-init-scope obj
This generic function sets the scope of the suffix object OBJ.
The scope is actually a property of the transient prefix, not of
individual suffixes. However it is possible to invoke a suffix
command directly instead of from a transient. In that case, if the
suffix expects a scope, then it has to determine that itself and
store it in its ‘ ’
This function is called for all suffix commands, but unless a
concrete method is implemented this falls through to the default
implementation, which is a noop.
File: transient.info, Node: Suffix Format Methods, Prev: Suffix Value Methods, Up: Suffix Methods
5.5.2 Suffix Format Methods
---------------------------
-- Function: transient-format obj
This generic function formats and returns OBJ for display.
When this function is called, then the current buffer is some
temporary buffer. If you need the buffer from which the prefix
command was invoked to be current, then do so by temporarily making
‘ ’
-- Function: transient-format-key obj
This generic function formats OBJ’ ‘ ’
the result.
-- Function: transient-format-description obj
This generic function formats OBJ’ ‘ ’
returns the result.
-- Function: transient-format-value obj
This generic function formats OBJ’
the result.
-- Function: transient-show-help obj
Show help for the prefix, infix or suffix command represented by
OBJ.
For prefixes, show the info manual, if that is specified using the
‘ ’
specified using the ‘ ’ ’
doc string.
For suffixes, show the command’
For infixes, show the manpage if that is specified. Otherwise show
the command’
File: transient.info, Node: Prefix Slots, Next: Suffix Slots, Prev: Suffix Methods, Up: Classes and Methods
5.6 Prefix Slots
================
• ‘ ’ ‘ ’ ‘ ’
documentation for the prefix and its suffixes. The command
‘ ’ ‘ ’
to lookup and use these values.
• ‘ ’
value, then this slot has to be set to the same value for all of
them. You probably don’
• ‘ ’ ‘ ’
determining whether the currently active transient prefix command
2023-07-27 19:52:58 +00:00
remains active/transient when a suffix or arbitrary non-suffix
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command is invoked. See *note Transient State::.
• ‘ ’
mutually exclusive arguments. Enabling one of these arguments
causes the others to be disabled. An argument may appear in
multiple sub-lists.
• ‘ ’
secondary value, called a “scope”. See ‘ ’
Internal Prefix Slots
---------------------
These slots are mostly intended for internal use. They should not be
set in calls to ‘ ’
• ‘ ’
clone of that object is stored in the global variable
‘ ’ ’
‘ ’
• ‘ ’
consists of a command, which is stored in a symbol’
and an object, which is stored in the ‘ ’
of the same symbol.
• ‘ ’
whose layer is equal or lower are displayed. See *note Enabling
and Disabling Suffixes::.
• ‘ ’
accessing this slot directly you should use the function
‘ ’
value.
• ‘ ’ ‘ ’
values. Unless you implement your own ‘ ’
method you should not have to deal with these slots.
File: transient.info, Node: Suffix Slots, Next: Predicate Slots, Prev: Prefix Slots, Up: Classes and Methods
5.7 Suffix Slots
================
Here we document most of the slots that are only available for suffix
objects. Some slots are shared by suffix and group objects, they are
documented in *note Predicate Slots::.
Also see *note Suffix Classes::.
Slots of ‘ ’
---------------------------
• ‘ ’
• ‘ ’
• ‘ ’
State::.
• ‘ ’
It must contain the following %-placeholders:
• ‘ ’
• ‘ ’
• ‘ ’ ’
value.
• ‘ ’
is called with no argument and returns a string.
• ‘ ’
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unspecified, the prefix controls how help is displayed for its
2022-08-25 15:13:38 +00:00
suffixes.
Slots of ‘ ’
--------------------------
Some of these slots are only meaningful for some of the subclasses.
They are defined here anyway to allow sharing certain methods.
• ‘ ’ ‘ ’
• ‘ ’ ‘ ’
• ‘ ’
• ‘ ’ ’
value. If bound, then this is called with the object as the only
argument. Usually this is not bound, in which case the object’
primary ‘ ’
• ‘ ’
the prefixes.
• ‘ ’
values. If this is non-‘ ’
‘ ’
reader, then it should read the values using that function or
similar.
Supported non-‘ ’
• Use ‘ ’
is useful e.g., for an ‘ ’
remaining arguments are files (such as ‘
file2’
In the list returned by ‘ ’
its values are represented by a single list of the form
‘ ’
• Use ‘ ’
times.
In the list returned by ‘ ’
option and its value appears separately in the usual from, for
example: ‘
"--option=second")’
In both cases the option’
default value of a prefix using the same format as returned by
‘ ’ ‘
"f2"))’
• ‘ ’
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invocation. If this is ‘ ’
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simply unset and have to be invoked a second time to set a new
value.
• ‘ ’
value.
• ‘ ’
the command name. This is useful when multiple infixes should
share the same history because their values are of the same kind.
• ‘ ’
for switches. The function takes three arguments, PROMPT,
INITIAL-INPUT and HISTORY, and must return a string.
• ‘ ’
a function that takes the object as the only argument and which
returns a prompt string.
• ‘ ’
on the class of the object.
Slots of ‘ ’
-----------------------------
• ‘ ’
Slots of ‘ ’
-----------------------------
• ‘ ’ ‘ ’
the ‘ ’ ‘ ’
• ‘ ’
E.g., ‘ ’
File: transient.info, Node: Predicate Slots, Prev: Suffix Slots, Up: Classes and Methods
5.8 Predicate Slots
===================
Suffix and group objects share some predicate slots that control whether
a group or suffix should be available depending on some state. Only one
of these slots can be used at the same time. It is undefined what
happens if you use more than one.
• ‘ ’ ‘ ’
• ‘ ’ ‘ ’
• ‘ ’ ’ ‘ ’
• ‘ ’ ’ ‘ ’
• ‘ ’
• ‘ ’
• ‘ ’
• ‘ ’
One more slot is shared between group and suffix classes, ‘ ’
Like the slots documented above, it is a predicate, but it is used for a
different purpose. The value has to be an integer between 1 and 7.
‘ ’
depending on user preference. See *note Enabling and Disabling
Suffixes::.
File: transient.info, Node: Related Abstractions and Packages, Next: FAQ, Prev: Classes and Methods, Up: Top
6 Related Abstractions and Packages
***********************************
* Menu:
* Comparison With Prefix Keys and Prefix Arguments::
* Comparison With Other Packages::
File: transient.info, Node: Comparison With Prefix Keys and Prefix Arguments, Next: Comparison With Other Packages, Up: Related Abstractions and Packages
6.1 Comparison With Prefix Keys and Prefix Arguments
====================================================
While transient commands were inspired by regular prefix keys and prefix
arguments, they are also quite different and much more complex.
The following diagrams illustrate some of the differences.
• ‘ ’
• ‘ ’ ’
• ‘ ’
• ‘ ’
Regular Prefix Commands
-----------------------
See *note (elisp)Prefix Keys::.
,--> command1 --> (c)
|
(c)-(+)-> prefix command or key --+--> command2 --> (c)
|
`--> command3 --> (c)
Regular Prefix Arguments
------------------------
See *note (elisp)Prefix Command Arguments::.
,----------------------------------,
| |
v |
(c)-(+)---> prefix argument command --(c)-(+)-> any command --> (c)
| ^ |
| | |
`-- sets or changes --, ,-- maybe used --' |
| | |
v | |
prefix argument state |
^ |
| |
`-------- discards --------'
Transients
----------
(∩｀-´
This diagram ignores the infix value and external state:
(c)
| ,- {stay} ------<-,-<------------<-,-<---,
(+) | | | |
| | | | |
| | ,--> infix1 --| | |
| | | | | |
| | |--> infix2 --| | |
v v | | | |
prefix -(c)-(+)-> infix3 --' ^ |
| | |
|---------------> suffix1 -->--| |
| | |
|---------------> suffix2 ----{1}------> {exit} --> (c)
| |
|---------------> suffix3 -------------> {exit} --> (c)
| |
`--> any command --{2}-> {warn} -->--|
| |
|--> {noop} -->--|
| |
|--> {call} -->--'
|
`------------------> {exit} --> (c)
This diagram takes the infix value into account to an extend, while
still ignoring external state:
(c)
| ,- {stay} ------<-,-<------------<-,-<---,
(+) | | | |
| | | | |
| | ,--> infix1 --| | |
| | | | | | |
| | ,--> infix2 --| | |
v v | | | | |
prefix -(c)-(+)-> infix3 --' | |
| | ^ |
| | | |
|---------------> suffix1 -->--| |
| | ^ | |
| | | | |
|---------------> suffix2 ----{1}------> {exit} --> (c)
| | ^ | |
| | | | v
| | | | |
|---------------> suffix3 -------------> {exit} --> (c)
| | ^ | |
| sets | | v
| | maybe | |
| | used | |
| | | | |
| | infix --' | |
| `---> value | |
| ^ | |
| | | |
| hides | |
| | | |
| `--------------------------<---|
| | |
`--> any command --{2}-> {warn} -->--| |
| | |
|--> {noop} -->--| |
| | |
|--> {call} -->--' ^
| |
`------------------> {exit} --> (c)
This diagram provides more information about the infix value and also
takes external state into account.
,----sets--- "anything"
|
v
,---------> external
| state
| | |
| initialized | ☉‿⚆
sets from |
| | maybe
| ,----------' used
| | |
(c) | | v
| ,- {stay} --|---<-,-<------|-----<-,-<---,
(+) | | | | | | |
| | | v | | | |
| | ,--> infix1 --| | | |
| | | | | | | | |
| | | | v | | | |
| | ,--> infix2 --| | | |
| | | | ^ | | | |
v v | | | | | | |
prefix -(c)-(+)-> infix3 --' | | |
| | ^ | ^ |
| | | v | |
|---------------> suffix1 -->--| |
| | | ^ | | |
| | | | v | |
|---------------> suffix2 ----{1}------> {exit} --> (c)
| | | ^ | | |
| | | | | | v
| | | | v | |
|---------------> suffix3 -------------> {exit} --> (c)
| | | ^ | |
| sets | | | v
| | initialized maybe | |
| | from used | |
| | | | | |
| | `-- infix ---' | |
| `---> value -----------------------------> persistent
| ^ ^ | | across
| | | | | invocations -,
| hides | | | |
| | `----------------------------------------------'
| | | |
| `--------------------------<---|
| | |
`--> any command --{2}-> {warn} -->--| |
| | |
|--> {noop} -->--| |
| | |
|--> {call} -->--' ^
| |
`------------------> {exit} --> (c)
• ‘ ’
command is invoked. The default is to do so for all suffixes
except for those that are common to all transients and which are
used to perform tasks such as providing help and saving the value
of the infix arguments for future invocations. The behavior can
also be specified for individual suffix commands and may even
depend on state.
• ‘ ’
non-suffix commands. The default is to not allow that and instead
warn the user.
Despite already being rather complex, even the last diagram leaves
out many details. Most importantly it implies that the decision whether
to remain transient is made later than it actually is made (for the most
part a function on ‘ ’
implementation details are of little relevance to users and are covered
elsewhere.
File: transient.info, Node: Comparison With Other Packages, Prev: Comparison With Prefix Keys and Prefix Arguments, Up: Related Abstractions and Packages
6.2 Comparison With Other Packages
==================================
Magit-Popup
-----------
Transient is the successor to Magit-Popup (see *note
(magit-popup)Top::).
One major difference between these two implementations of the same
ideas is that while Transient uses transient keymaps and embraces the
command-loop, Magit-Popup implemented an inferior mechanism that does
not use transient keymaps and that instead of using the command-loop
implements a naive alternative based on ‘ ’
Magit-Popup does not use classes and generic functions and defining a
new command type is near impossible as it involves adding hard-coded
special-cases to many functions. Because of that only a single new type
was added, which was not already part of Magit-Popup’
A lot of things are hard-coded in Magit-Popup. One random example is
that the key bindings for switches must begin with ‘ ’
options must begin with ‘ ’
Hydra
-----
Hydra (see <https://github.com/abo-abo/hydra>) is another package that
provides features similar to those of Transient.
Both packages use transient keymaps to make a set of commands
temporarily available and show the available commands in a popup buffer.
A Hydra “body” is equivalent to a Transient “prefix” and a Hydra
“head” is equivalent to a Transient “suffix”. Hydra has no equivalent
of a Transient “infix”.
Both hydras and transients can be used as simple command dispatchers.
Used like this they are similar to regular prefix commands and prefix
keys, except that the available commands are shown in the popup buffer.
(Another package that does this is ‘ ’
automatically for any incomplete key sequence. The advantage of that
approach is that no additional work is necessary; the disadvantage is
that the available commands are not organized semantically.)
Both Hydra and Transient provide features that go beyond simple
command dispatchers:
• Invoking a command from a hydra does not necessarily exit the
hydra. That makes it possible to invoke the same command again,
but using a shorter key sequence (i.e., the key that was used to
enter the hydra does not have to be pressed again).
Transient supports that too, but for now this feature is not a
focus and the interface is a bit more complicated. A very basic
example using the current interface:
(transient-define-prefix outline-navigate ()
:transient-suffix 'transient--do-stay
:transient-non-suffix 'transient--do-warn
[("p" "previous visible heading" outline-previous-visible-heading)
("n" "next visible heading" outline-next-visible-heading)])
• Transient supports infix arguments; values that are set by infix
commands and then consumed by the invoked suffix command(s).
To my knowledge, Hydra does not support that.
Both packages make it possible to specify how exactly the available
commands are outlined:
• With Hydra this is often done using an explicit format string,
which gives authors a lot of flexibility and makes it possible to
do fancy things.
The downside of this is that it becomes harder for a user to add
additional commands to an existing hydra and to change key
bindings.
• Transient allows the author of a transient to organize the commands
into groups and the use of generic functions allows authors of
transients to control exactly how a certain command type is
displayed.
However while Transient supports giving sections a heading it does
not currently support giving the displayed information more
structure by, for example, using box-drawing characters.
That could be implemented by defining a new group class, which lets
the author specify a format string. It should be possible to
implement that without modifying any existing code, but it does not
currently exist.
File: transient.info, Node: FAQ, Next: Keystroke Index, Prev: Related Abstractions and Packages, Up: Top
Appendix A FAQ
**************
A.1 Can I control how the popup buffer is displayed?
====================================================
Yes, see ‘ ’
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A.2 How can I copy text from the popup buffer?
==============================================
To be able to mark text in any transient popup buffer using the mouse,
you have to add the following binding. Note that the region won’
visualized, while doing so. After you have quit the transient popup,
you will be able to yank it another buffer.
(keymap-set transient-predicate-map
"<mouse-set-region>"
#'transient--do-stay)
A.3 Why did some of the key bindings change?
2022-08-25 15:13:38 +00:00
============================================
You may have noticed that the bindings for some of the common commands
do *not* have the prefix ‘ ’
commands are grayed out while others are not. That unfortunately is a
bit confusing if the section of common commands is not shown
permanently, making the following explanation necessary.
The purpose of usually hiding that section but showing it after the
user pressed the respective prefix key is to conserve space and not
overwhelm users with too much noise, while allowing the user to quickly
list common bindings on demand.
That however should not keep us from using the best possible key
bindings. The bindings that do use a prefix do so to avoid wasting too
many non-prefix bindings, keeping them available for use in individual
transients. The bindings that do not use a prefix and that are *not*
grayed out are very important bindings that are *always* available, even
when invoking the “common command key prefix” or *any other*
transient-specific prefix. The non-prefix keys that *are* grayed out
however, are not available when any incomplete prefix key sequence is
active. They do not use the “common command key prefix” because it is
likely that users want to invoke them several times in a row and e.g.,
‘ ’ ‘ ’
You may also have noticed that the “Set” command is bound to ‘ ’
while Magit-Popup used to bind ‘ ’
users praise the latter binding (sic), so I did not change it
willy-nilly. The reason that I changed it is that using different
prefix keys for different common commands, would have made the temporary
display of the common commands even more confusing, i.e., after pressing
‘ ’ ‘ ’
out.
Using a single prefix for common commands key means that all other
potential prefix keys can be used for transient-specific commands
*without* the section of common commands also popping up. ‘ ’
particular is a prefix that I want to (and already do) use for Magit,
and also using that for a common command would prevent me from doing so.
(Also see the next question.)
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A.4 Why does ‘ ’
2022-08-25 15:13:38 +00:00
=========================================
I agree that ‘ ’
This includes quitting whatever transient is currently active, but it
also includes quitting whatever it is that some specific transient is
controlling. The transient ‘ ’ ‘ ’
command that turns ‘ ’
So I had to decide if ‘ ’
Magit-Popup used to) or whether ‘ ’
‘ ’
sense for them. Because all other letters are already reserved for use
by individual transients, I have decided to no longer make an exception
for ‘ ’
If you want to get ‘ ’ ’
that is a bit more complicated than changing a single key binding, so I
have implemented a function, ‘ ’
necessary changes. See its doc string for more information.
File: transient.info, Node: Keystroke Index, Next: Command and Function Index, Prev: FAQ, Up: Top
Appendix B Keystroke Index
**************************
* Menu:
* C-g: Aborting and Resuming Transients.
(line 27)
* C-g <1>: Aborting and Resuming Transients.
(line 27)
* C-h: Getting Help for Suffix Commands.
(line 11)
* C-M-n: Using History. (line 18)
* C-M-p: Using History. (line 13)
* C-q: Aborting and Resuming Transients.
(line 36)
* C-x C-k: Saving Values. (line 29)
* C-x C-s: Saving Values. (line 25)
* C-x l: Enabling and Disabling Suffixes.
(line 43)
* C-x n: Using History. (line 18)
* C-x p: Using History. (line 13)
* C-x s: Saving Values. (line 21)
* C-x t: Common Suffix Commands.
(line 18)
* C-z: Aborting and Resuming Transients.
(line 41)
File: transient.info, Node: Command and Function Index, Next: Variable Index, Prev: Keystroke Index, Up: Top
Appendix C Command and Function Index
*************************************
* Menu:
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* transient--do-call: Transient State. (line 110)
* transient--do-exit: Transient State. (line 102)
* transient--do-leave: Transient State. (line 169)
* transient--do-quit-all: Transient State. (line 181)
* transient--do-quit-one: Transient State. (line 176)
* transient--do-recurse: Transient State. (line 117)
* transient--do-replace: Transient State. (line 129)
* transient--do-return: Transient State. (line 105)
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* transient--do-stay: Transient State. (line 83)
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* transient--do-stay <1>: Transient State. (line 166)
* transient--do-suspend: Transient State. (line 136)
* transient--do-suspend <1>: Transient State. (line 186)
* transient--do-warn: Transient State. (line 163)
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* transient--history-init: Prefix Classes. (line 10)
* transient--insert-group: Group Methods. (line 19)
* transient-append-suffix: Modifying Existing Transients.
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(line 51)
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* transient-arg-value: Using Infix Arguments.
(line 31)
* transient-args: Using Infix Arguments.
(line 22)
* transient-define-argument: Defining Suffix and Infix Commands.
(line 61)
* transient-define-infix: Defining Suffix and Infix Commands.
(line 26)
* transient-define-prefix: Defining Transients. (line 13)
* transient-define-suffix: Defining Suffix and Infix Commands.
(line 9)
* transient-format: Suffix Format Methods.
(line 6)
* transient-format-description: Suffix Format Methods.
(line 18)
* transient-format-key: Suffix Format Methods.
(line 14)
* transient-format-value: Suffix Format Methods.
(line 22)
* transient-get-suffix: Modifying Existing Transients.
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(line 73)
2022-08-25 15:13:38 +00:00
* transient-help: Getting Help for Suffix Commands.
(line 11)
* transient-history-next: Using History. (line 18)
* transient-history-prev: Using History. (line 13)
* transient-infix-read: Suffix Value Methods.
(line 16)
* transient-infix-set: Suffix Value Methods.
(line 36)
* transient-infix-value: Suffix Value Methods.
(line 39)
* transient-init-scope: Suffix Value Methods.
(line 52)
* transient-init-value: Suffix Value Methods.
(line 6)
* transient-insert-suffix: Modifying Existing Transients.
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(line 49)
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* transient-prompt: Suffix Value Methods.
(line 32)
* transient-quit-all: Aborting and Resuming Transients.
(line 36)
* transient-quit-one: Aborting and Resuming Transients.
(line 27)
* transient-quit-seq: Aborting and Resuming Transients.
(line 27)
* transient-remove-suffix: Modifying Existing Transients.
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(line 70)
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* transient-replace-suffix: Modifying Existing Transients.
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(line 66)
2022-11-08 03:31:08 +00:00
* transient-reset: Saving Values. (line 29)
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* transient-resume: Aborting and Resuming Transients.
(line 53)
* transient-save: Saving Values. (line 25)
* transient-scroll-down: Other Commands. (line 17)
* transient-scroll-up: Other Commands. (line 12)
* transient-set: Saving Values. (line 21)
* transient-set-level: Enabling and Disabling Suffixes.
(line 43)
* transient-setup-children: Group Methods. (line 6)
* transient-show-help: Suffix Format Methods.
(line 26)
* transient-suffix-put: Modifying Existing Transients.
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(line 77)
2022-08-25 15:13:38 +00:00
* transient-suffixes: Using Infix Arguments.
(line 38)
* transient-suspend: Aborting and Resuming Transients.
(line 41)
* transient-toggle-common: Common Suffix Commands.
(line 18)
File: transient.info, Node: Variable Index, Next: Concept Index, Prev: Command and Function Index, Up: Top
Appendix D Variable Index
*************************
* Menu:
* transient-align-variable-pitch: Configuration. (line 181)
* transient-current-command: Using Infix Arguments.
(line 57)
* transient-current-prefix: Using Infix Arguments.
(line 52)
* transient-current-suffixes: Using Infix Arguments.
(line 44)
* transient-default-level: Enabling and Disabling Suffixes.
(line 33)
* transient-detect-key-conflicts: Configuration. (line 206)
* transient-display-buffer-action: Configuration. (line 51)
* transient-enable-popup-navigation: Configuration. (line 36)
* transient-force-fixed-pitch: Configuration. (line 194)
* transient-force-single-column: Configuration. (line 93)
* transient-hide-during-minibuffer-read: Configuration. (line 177)
* transient-highlight-higher-levels: Configuration. (line 219)
* transient-highlight-mismatched-keys: Configuration. (line 131)
* transient-history-file: Using History. (line 33)
* transient-history-limit: Using History. (line 37)
* transient-levels-file: Enabling and Disabling Suffixes.
(line 38)
* transient-mode-line-format: Configuration. (line 102)
* transient-read-with-initial-input: Configuration. (line 170)
* transient-semantic-coloring: Configuration. (line 118)
* transient-show-common-commands: Common Suffix Commands.
(line 23)
* transient-show-popup: Configuration. (line 15)
* transient-substitute-key-function: Configuration. (line 149)
* transient-values-file: Saving Values. (line 31)
File: transient.info, Node: Concept Index, Next: GNU General Public License, Prev: Variable Index, Up: Top
Appendix E Concept Index
************************
* Menu:
* aborting transients: Aborting and Resuming Transients.
(line 6)
* classes and methods: Classes and Methods. (line 6)
* command dispatchers: Introduction. (line 70)
* common suffix commands: Common Suffix Commands.
(line 6)
* defining infix commands: Defining Suffix and Infix Commands.
(line 6)
* defining suffix commands: Defining Suffix and Infix Commands.
(line 6)
* disabling suffixes: Enabling and Disabling Suffixes.
(line 6)
* enabling suffixes: Enabling and Disabling Suffixes.
(line 6)
* getting help: Getting Help for Suffix Commands.
(line 6)
* group specifications: Group Specifications. (line 6)
* invoking transients: Invoking Transients. (line 6)
* levels: Enabling and Disabling Suffixes.
(line 10)
* modifying existing transients: Modifying Existing Transients.
(line 6)
* quit transient: Aborting and Resuming Transients.
(line 6)
* resuming transients: Aborting and Resuming Transients.
(line 6)
* saving values of arguments: Saving Values. (line 6)
* scope of a transient: Defining Transients. (line 43)
* suffix specifications: Suffix Specifications.
(line 6)
* transient prefix command: Introduction. (line 13)
* transient state: Transient State. (line 6)
* transient-level: Enabling and Disabling Suffixes.
(line 15)
* value history: Using History. (line 6)
File: transient.info, Node: GNU General Public License, Prev: Concept Index, Up: Top
Appendix F GNU General Public License
*************************************
Version 3, 29 June 2007
Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Preamble
========
The GNU General Public License is a free, copyleft license for software
and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program—to make sure it remains free
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GNU General Public License for most of our software; it applies also to
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your programs, too.
When we speak of free software, we are referring to freedom, not
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To protect your rights, we need to prevent others from denying you
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certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
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or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
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TERMS AND CONDITIONS
====================
0. Definitions.
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Nothing in this License shall be construed as excluding or limiting
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If conditions are imposed on you (whether by court order, agreement
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If the Program specifies that a proxy can decide which future
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15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE
COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS”
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.
SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES
AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely
approximates an absolute waiver of all civil liability in
connection with the Program, unless a warranty or assumption of
liability accompanies a copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
===========================
How to Apply These Terms to Your New Programs
=============================================
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these
terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least the
“copyright” line and a pointer to where the full notice is found.
ONE LINE TO GIVE THE PROGRAM'S NAME AND A BRIEF IDEA OF WHAT IT DOES.
Copyright (C) YEAR NAME OF AUTHOR
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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PROGRAM Copyright (C) YEAR NAME OF AUTHOR
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appropriate parts of the General Public License. Of course, your
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the GNU GPL, see <https://www.gnu.org/licenses/>.
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Tag Table:
2023-07-27 19:52:58 +00:00
Node: Top
Node: Introduction
Node: Usage
Node: Invoking Transients
Node: Aborting and Resuming Transients
Node: Common Suffix Commands
Node: Saving Values
Ref: Saving Values-Footnote-1
Node: Using History
Node: Getting Help for Suffix Commands
Node: Enabling and Disabling Suffixes
Node: Other Commands
Node: Configuration
Ref: Essential Options
Ref: Accessibility Options
Ref: Auxiliary Options
Ref: Developer Options
Node: Modifying Existing Transients
Node: Defining New Commands
Node: Defining Transients
Node: Binding Suffix and Infix Commands
Node: Group Specifications
Node: Suffix Specifications
Node: Defining Suffix and Infix Commands
Node: Using Infix Arguments
Node: Transient State
Ref: Pre-commands for Infixes
Ref: Pre-commands for Suffixes
Ref: Pre-commands for Non-Suffixes
Ref: Special Pre-Commands
Node: Classes and Methods
Node: Group Classes
Node: Group Methods
Node: Prefix Classes
Node: Suffix Classes
Node: Suffix Methods
Node: Suffix Value Methods
Node: Suffix Format Methods
Node: Prefix Slots
Ref: Internal Prefix Slots
Node: Suffix Slots
Ref: Slots of transient-suffix
Ref: Slots of transient-infix
Ref: Slots of transient-variable
Ref: Slots of transient-switches
Node: Predicate Slots
Node: Related Abstractions and Packages
Node: Comparison With Prefix Keys and Prefix Arguments
Ref: Regular Prefix Commands
Ref: Regular Prefix Arguments
Ref: Transients
Node: Comparison With Other Packages
Ref: Magit-Popup
Ref: Hydra
Node: FAQ
Ref: Can I control how the popup buffer is displayed?
Ref: How can I copy text from the popup buffer?
Ref: Why did some of the key bindings change?
Ref: Why does q not quit popups anymore?
Node: Keystroke Index
Node: Command and Function Index
Node: Variable Index
Node: Concept Index
Node: GNU General Public License
2022-08-25 15:13:38 +00:00
End Tag Table
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