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This is use-package.info, produced by makeinfo version 6.7 from
use-package.texi.
This manual is for use-package, a configuration macro for simplifying
your init file.
Copyright © 2022 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License,
Version 1.3 or any later version published by the Free Software
Foundation; with no Invariant Sections, with the Front-Cover Texts
being “A GNU Manual”, and with the Back-Cover Texts as in (a)
below. A copy of the license is included in the section entitled
“GNU Free Documentation License”.
(a) The FSFs Back-Cover Text is: “You have the freedom to copy and
modify this GNU manual.”
INFO-DIR-SECTION Emacs misc features
START-INFO-DIR-ENTRY
* use-package: (use-package). Declarative package configuration for Emacs.
END-INFO-DIR-ENTRY

File: use-package.info, Node: Top, Next: Basic Concepts, Up: (dir)
use-package User Manual
***********************
The use-package macro allows you to isolate package customization in
your init file in a declarative way. It takes care of a lot of things
for you that would otherwise require a lot of repetitive boilerplate
code. It can help with common customization, such as binding keys,
setting up hooks, customizing user options and faces, autoloading, and
more. It also helps you keep Emacs startup fast, even when you use many
(even hundreds) of packages.
Note that use-package is not a package manager. Although use-package
does have the useful capability to interface with the Emacs package
manager, its primary purpose is for the configuration and loading of
packages.
This manual is for use-package, a configuration macro for simplifying
your init file.
Copyright © 2022 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License,
Version 1.3 or any later version published by the Free Software
Foundation; with no Invariant Sections, with the Front-Cover Texts
being “A GNU Manual”, and with the Back-Cover Texts as in (a)
below. A copy of the license is included in the section entitled
“GNU Free Documentation License”.
(a) The FSFs Back-Cover Text is: “You have the freedom to copy and
modify this GNU manual.”
* Menu:
* Basic Concepts:: Basic concepts of use-package.
* Getting Started:: A gentle introduction to use-package.
* Loading Packages:: How and when packages are loaded.
* Configuring Packages:: Package configuration keywords.
* Installing packages:: Ensuring packages are available.
* Byte-compiling:: Byte-compiling your init file.
* Troubleshooting:: What to do when theres trouble.
Appendices
* Keyword extensions:: Adding new use-package keywords.
* History:: History and acknowledgments.
* GNU Free Documentation License:: The license for this manual.
* Index::

File: use-package.info, Node: Basic Concepts, Next: Getting Started, Prev: Top, Up: Top
1 Basic Concepts
****************
use-package provides the use-package macro, that simplifies the
customization and use of packages in Emacs. It was created for a few
basic reasons, each of which drove the design. Understanding these
reasons may help make some of those decisions clearer:
1. To gather all configuration details of a package into one place,
making it easier to copy, disable, or move it elsewhere in the init
file.
2. To reduce duplication and boilerplate, capturing several common
practices as mere keywords both easy and intuitive to use.
3. To make startup time of Emacs as quick as possible, without
sacrificing the quantity of add-on packages used.
4. To make it so errors encountered during startup disable only the
package raising the error, and as little else as possible, leaving
as close to a functional Emacs as possible.
5. To allow byte-compilation of ones init file so that any warnings
or errors seen are meaningful. In this way, even if
byte-compilation is not used for speed (reason 3), it can still be
used as a sanity check.
It is worth noting that use-package is not intended to replace the
standard M-x customize. On the contrary, it is designed to work
together with it, for things that customize cannot do.

File: use-package.info, Node: Getting Started, Next: Loading Packages, Prev: Basic Concepts, Up: Top
2 Getting Started
*****************
This chapter provides instructions and examples for quickly getting
started with use-package. The first thing you need to do is make sure
that use-package itself is loaded. To do that, put this at the top of
your init file:
(require 'use-package)
The above makes the use-macro for in the rest of your init file.
In this manual, we call each call to use-macro a “declaration”, to
highlight the declarative nature of its semantic.
To unconditionally load a package named foo, add the following
declaration to your init file:
(use-package foo)
This declaration is equivalent to using require, with some use-package
specific error handling added in. Just like require, it needs the
package foo to be installed and available in your load-path (*note
Installing packages::).
To evaluate Lisp code _before_ the foo package is loaded, use the
:init keyword:
(use-package foo
:init
(setq foo-variable t))
Similarly, :config can be used to execute code _after_ a package is
loaded. In cases where loading is done lazily (*note Loading
Packages::), this execution is deferred until after the autoload occurs.
As you might expect, you can use :init and :config together:
(use-package foo
:init
(setq foo-variable t)
:config
(foo-mode 1))
The above declarations will all load the foo package immediately.
In most cases, this is not necessary or desirable, as that will slow
down Emacs startup. Instead, you should try to set things up so that
packages are only loaded when they are actually needed (autoloading).
If you have installed a package from GNU ELPA that provides its own
autoloads, it is often enough to say:
(use-package foo
:defer t)
This will avoid loading the package. Now, when you run any autoloaded
command, the package foo is loaded automatically. Package authors
will make their own decisions about which commands are marked to
autoload by default.
In some cases, you might need or want to provide your own autoloads.
The below more complex example autoloads the commands isearch-moccur
and isearch-all from color-moccur.el, and binds keys both globally
and in isearch-mode-map. When one of these commands are used, the
package is loaded. At that point, moccur-edit is also loaded, to
allow editing of the moccur buffer.
(use-package color-moccur
:commands (isearch-moccur isearch-all)
:bind (("M-s O" . moccur)
:map isearch-mode-map
("M-o" . isearch-moccur)
("M-O" . isearch-moccur-all))
:init
(setq isearch-lazy-highlight t)
:config
(use-package moccur-edit))
Some packages will suggest ready-made use-package declarations that
you can use. Where possible, it is a good idea to copy them, and use
that as a starting point.
That should be enough to get you started!

File: use-package.info, Node: Loading Packages, Next: Configuring Packages, Prev: Getting Started, Up: Top
3 Loading Packages
******************
Before use-package can load an Emacs Lisp package, it must be available
in a directory on your load-path. When you install packages using the
built-in install-package command, it will do this automatically for
you. Packages shipped with Emacs (built-in packages) are always
available.
If you install packages manually, you must make sure they are
available on your load-path. *Note (emacs)Lisp Libraries:: for
details.
Some packages have more than one library. In those cases, you might
need more than one use-package declaration to make sure it is properly
loaded. For complex configurations, you might also need more than one
declaration for a package with the same name.
use-package can interface with package.el to install packages on
Emacs start. *Note Installing packages:: for details.
* Menu:
* Loading basics:: How and when packages are loaded.
* Deferring loading:: Loading packages later.
* Forcing loading:: Loading packages immediately.
* Conditional loading:: Loading packages conditionally.
* Loading sequentially:: Loading packages in sequence.
* Load dependencies:: Dont load without dependencies.
* Load path:: Using a custom load-path.
* Manual autoloads:: Setting up autoloads manually.

File: use-package.info, Node: Loading basics, Next: Deferring loading, Up: Loading Packages
3.1 How and when use-package loads packages
===========================================
The use-package macro either will either load a package immediately,
or when they are first used (autoloading). In the simplest case, a
use-package declaration loads a package when it is evaluated.(1) If
the declaration is in your init file, this happens automatically each
time Emacs is started.
For example, the below declaration immediately loads the library
foo, just like require would. If the library foo is not available
in your load-path, it logs a warning to the *Messages* buffer:
(use-package foo)
Note that a “package” is different from an Emacs Lisp “library”. The
above declaration tells use-package to load the _library_ foo.el,
which the overwhelming majority of cases also resides in a _package_
named foo. But the foo package might also contain a library named
foo-extra.el. If that library is not loaded automatically, you will
need a separate use-package declaration to make sure that it is. This
manual will often use these terms interchangeably, as this distinction
does not usually matter, but you should keep it in mind for the cases
when it does.
The details of how and when you should load a package might differ
from one package to another. When in doubt, refer to the package
documentation for details.
---------- Footnotes ----------
(1) This happens both at run-time and at compile-time. *Note
Byte-compiling::.

File: use-package.info, Node: Deferring loading, Next: Forcing loading, Prev: Loading basics, Up: Loading Packages
3.2 Deferring package loading
=============================
In the examples we have seen so far, use-package loads packages every
time you start Emacs, even if that package is never used. That will
make starting Emacs slower. use-package therefore tries to set things
up in such a way that it only loads packages when a command is first
used (either with M-x or some key binding). This is based on
autoloading, a full description of which is outside the scope of this
manual. *Note (elisp)Autoload:: for the full story.
Some use-package keywords provide autoload “triggers” that cause a
package to be loaded when certain events occur. For example, the
:hook keyword sets up a trigger that fires when the specified hook is
run, and then loads the package automatically. The other trigger
keywords, all of which are described later in this manual, are
:commands, :bind, :bind*, :bind-keymap, :bind-keymap*,
:mode, and :interpreter.
The :defer keyword
--------------------
If you did not specify any autoloading keyword, use-package will fall
back to loading the package immediately (typically when Emacs is
starting up). This can be overridden using the :defer keyword. It
takes one boolean argument: a non-nil value means to stop this package
from being immediately loaded. Here is an example of using :defer to
postpone loading the package foo:
(use-package foo
:defer t)
Using :defer t by itself like this is rarely useful. Typically,
you would only use it together with a keyword like :config (*note Lisp
Configuration::), or :ensure (*note Installing packages::).
Defer loading until idle for N seconds
--------------------------------------
You can also give a numeric argument N to :defer to specify that a
package should be loaded (if it hasnt already) after Emacs has been
idle for N seconds. For example, use this to make use-package load
foo after 30 seconds of idle time:
(use-package foo
:defer 30)
When to use :defer
--------------------
When using autoloading keywords, there is no need to also use :defer.
It doesnt hurt anything to add it in this case, perhaps for extra
clarity, but it is redundant.
You should use :defer to force deferred loading, in cases when
use-package isnt creating any autoloads for you. For example, you
might know that some other package will already do something to cause
your package to load at the appropriate time. This is usually the case
when you install a package using package-install, as packages
installed in this way normally always have their own autoloads already
set up.
Making :defer t the default
-----------------------------
If you customize the user option use-package-always-defer to
non-nil, the use-package macro will behave as if :defer t is
always specified. This can be overridden for individual declarations
using either :defer nil or :demand t (*note Forcing loading::).

File: use-package.info, Node: Forcing loading, Next: Conditional loading, Prev: Deferring loading, Up: Loading Packages
3.3 Forcing package to load immediately
=======================================
The presence of autoloading trigger keywords can be overridden using
:demand t, which forces the package to load immediately. Thus, even
if you use an autoloading keyword such as :bind (*note Key
bindings::), adding :demand will force loading to occur immediately.
It will also avoid creating an autoload for the bound key, as it would
be redundant.
If you specify both :demand t and :defer t, the :defer keyword
will take precedence.

File: use-package.info, Node: Conditional loading, Next: Loading sequentially, Prev: Forcing loading, Up: Loading Packages
3.4 Loading packages conditionally
==================================
The :if, :when, and :unless keywords predicates the loading and
initialization of packages. They all accept one argument, an Emacs Lisp
form that is evaluated at run-time.
If the argument of the :if keyword evaluates to non-nil, the
package will be loaded and initialized. The :when keyword is provided
as an alias for :if. Finally, the :unless keyword is the inverse of
:if, such that :unless foo means the same thing as :if (not foo).
For example, if you only want to load foo in graphical Emacs
sessions, you could use the following:
(use-package foo
:if (display-graphic-p))
Some common use cases
---------------------
Here are some common cases for conditional loading, and how to achieve
them.
• Operating system
This example loads a package only on GNU/Linux. See the
system-type docstring for other valid values.
:if (eq system-type 'gnu/linux)
• Window system
This example loads a package only on macOS and X. See the
window-system docstring for valid values.
:if (memq window-system '(ns x))
• Installed package
This example loads a package only when the foo package is
installed.
:if (package-installed-p 'foo)
• Libraries in load-path
This example loads a package only when foo.el is available in
your load-path (for example, if you installed that file
manually):
:if (locate-library "foo.el")
Making conditional loading affect :preface and :ensure
----------------------------------------------------------
If you need to conditionalize a use-package form so that the condition
occurs before even :ensure or :preface, use when around the
use-package form itself. For example:
(when (memq window-system '(mac ns))
(use-package foo
:ensure t))

File: use-package.info, Node: Loading sequentially, Next: Load dependencies, Prev: Conditional loading, Up: Loading Packages
3.5 Loading packages in sequence
================================
Sometimes it only makes sense to configure a package after another one
has been loaded, because certain variables or functions are not in scope
until that time. This can achieved with the :after keyword, which
allows a fairly rich description of the exact conditions when loading
should occur. It takes either a symbol indicating the package name, a
list of such symbols, or a list of selectors (see below).
Here is an example of using the GNU ELPA packages hydra, ivy, and
ivy-hydra. Note that ivy-hydra will always be loaded last:
(use-package hydra)
(use-package ivy)
(use-package ivy-hydra
:after (ivy hydra))
In this case, because the declarations are evaluated in the order
they occur, the use of :after is not strictly necessary. However, if
hydra and ivy were to be autoloaded, using :after guarantees that
ivy-hydra is not loaded until it is actually needed. By using
:after, the above code will also work even if the order of the
declaration changes. This means that moving things around in your init
file is less likely to break things.
Using :after selectors
------------------------
The :after keyword also accepts a list of selectors. By default,
:after (foo bar) is the same as :after (:all foo bar), meaning that
loading of the given package will not happen until both foo and bar
have been loaded. Here are some of the other possibilities:
:after (foo bar)
:after (:all foo bar)
:after (:any foo bar)
:after (:all (:any foo bar) (:any baz quux))
:after (:any (:all foo bar) (:all baz quux))
When you nest selectors, such as (:any (:all foo bar) (:all baz
quux)), it means that the package will be loaded when either both foo
and bar have been loaded, or when both baz and quux have been
loaded.
Pay attention when setting use-package-always-defer to a non-nil
value, and also using the :after keyword. In this case, you will need
to specify how the declared package is to be loaded: for example, by
some :bind. If you are not using one of the keywords that registers
autoloads, such as :bind or :hook, and your package manager does not
provide autoloads, it is possible that your package will never be loaded
if you do not add :demand t to those declarations.

File: use-package.info, Node: Load dependencies, Next: Load path, Prev: Loading sequentially, Up: Loading Packages
3.6 Prevent loading if dependencies are missing
===============================================
While the :after keyword delays loading until the dependencies are
loaded, the somewhat simpler :requires keyword _never_ loads the
package if the dependencies are not available when the use-package
declaration is evaluated. In this context, “available” means that foo
is available if (featurep 'foo) evaluates to a non-nil value. For
example:
(use-package abbrev
:requires foo)
This is the same as:
(use-package abbrev
:if (featurep 'foo))
As a convenience, a list of such packages may be specified:
(use-package abbrev
:requires (foo bar baz))
For more complex logic, such as that supported by :after, simply
use :if and the appropriate Lisp expression.

File: use-package.info, Node: Load path, Next: Manual autoloads, Prev: Load dependencies, Up: Loading Packages
3.7 Setting a custom load-path
================================
If a package resides in some directory that is not in your load-path,
use the :load-path keyword to add it. It takes a symbol, a function,
a string or a list of strings. If the path is relative, it is expanded
within user-emacs-directory.
For example:
(use-package ess-site
:load-path "site-lisp/ess/lisp/"
:commands R)
Note that when using a symbol or a function to provide a dynamically
generated list of paths, you must inform the byte-compiler of this
definition so that the value is available at byte-compilation time.
This is done by using the special form eval-and-compile (as opposed to
eval-when-compile). Further, this value is fixed at whatever was
determined during compilation, to avoid looking up the same information
again on each startup. For example:
(eval-and-compile
(defun ess-site-load-path ()
(shell-command "find ~ -path ess/lisp")))
(use-package ess-site
:load-path (lambda () (list (ess-site-load-path)))
:commands R)

File: use-package.info, Node: Manual autoloads, Prev: Load path, Up: Loading Packages
3.8 Setting up autoloads manually
=================================
To autoload an interactive command, use the :commands keyword. When
you use the :commands keyword, it creates autoloads for those commands
(which defers loading of the module until they are used). The
:commands keyword takes either a symbol or a list of symbols.
The :autoload keyword works like :commands, but is used to
autoload non-interactive functions. Here is an example:
(use-package org-crypt
:autoload org-crypt-use-before-save-magic)

File: use-package.info, Node: Configuring Packages, Next: Installing packages, Prev: Loading Packages, Up: Top
4 Configuring Packages
**********************
This chapter describes the various keywords provided by use-package
that helps you configure packages.
* Menu:
* Lisp Configuration:: Using Lisp to configure packages.
* Key bindings:: Making your own keybindings.
* Hooks:: Adding functions to hooks.
* Modes and interpreters:: Enabling modes automatically.
* Magic handlers:: Using regexps to enable modes.
* User options:: Setting user options.
* Faces:: Customizing faces.
* Hiding minor modes:: Tidying up the mode line.

File: use-package.info, Node: Lisp Configuration, Next: Key bindings, Up: Configuring Packages
4.1 Using Lisp code for configuring packages
============================================
The most general way to add customizations are the :preface, :init,
and :config keywords. They all accept one or more Emacs Lisp forms,
up to the next keyword, that are evaluated in order. This lets you add
arbitrary Lisp code to your use-package declarations.
The only difference between these keywords is when they are
evaluated.
* Menu:
* Preface keyword:: Evaluate code before anything else.
* Init keyword:: Evaluate code before loading package.
* Config keyword:: Evaluate code after loading package.
* Best practices:: When to use :config, :init, and :preface.

File: use-package.info, Node: Preface keyword, Next: Init keyword, Up: Lisp Configuration
4.1.1 :preface is evaluated first
-----------------------------------
The :preface section is evaluated before anything else, except
:disabled and :ensure. It can be used to establish function and
variable definitions that will:
1. Make the byte-compiler happy. It will not complain about functions
whose definitions are unknown because you have them within a guard
block.
2. Define code that can be used in an :if test.
Note that whatever is specified within :preface is evaluated both
at load time and at byte-compilation time, in order to ensure that
definitions are seen by both the Lisp evaluator and the byte-compiler.
Therefore, you should avoid having any side-effects in your preface, and
restrict it to symbol declarations and definitions.

File: use-package.info, Node: Init keyword, Next: Config keyword, Prev: Preface keyword, Up: Lisp Configuration
4.1.2 :init is evaluated before loading package
-------------------------------------------------
The :init section is evaluated just before the package is loaded.
Note that the :init form is run unconditionally even if the foo
package happens to not exist on your system. You must therefore
remember to restrict :init code to only what would succeed either way.
:init also always happens before package load, whether :config has
been deferred or not.

File: use-package.info, Node: Config keyword, Next: Best practices, Prev: Init keyword, Up: Lisp Configuration
4.1.3 :config is evaluated after loading package
--------------------------------------------------
The :config section is evaluated after the package has been loaded.
If the package is loaded immediately, this happens immediately after
that, but if loading is done lazily (*note Loading Packages::), this is
deferred until after the package has been loaded.
In general, you should keep :init forms as simple and quick as
possible, and put as much as you can get away with into the :config
section. That way, deferred loading can help your Emacs start as
quickly as possible.

File: use-package.info, Node: Best practices, Prev: Config keyword, Up: Lisp Configuration
When to use :preface, :config and :init?
----------------------------------------------
Where possible, it is better to avoid :preface, :config and :init.
Instead, prefer autoloading keywords such as :bind, :hook, and
:mode, as they will take care of setting up autoloads for you without
any need for boilerplate code. For example, consider the following
declaration:
(use-package foo
:init
(add-hook 'some-hook 'foo-mode))
This has two problems. First, it will unconditionally load the
package foo on startup, which will make things slower. You can fix
this by adding :defer t:
(use-package foo
:defer t
:init
(add-hook 'some-hook 'foo-mode))
This is better, as foo is now only loaded when it is actually
needed (that is, when the hook some-hook is run).
The second problem is that there is a lot of boilerplate that you
have to write. In this case, it might not be so bad, but avoiding that
was what use-package was made to avoid. The better option in this case
is therefore to use :hook (*Note Hooks::), which also implies
:defer t. The above is thereby reduced down to:
(use-package foo
:hook some-hook)
use-package will set up autoloading for you, and your Emacs startup
time will not suffer one bit.

File: use-package.info, Node: Key bindings, Next: Hooks, Prev: Lisp Configuration, Up: Configuring Packages
4.2 Key bindings
================
One common thing to do when loading a package is to bind a key to
commands within that module. Without use-package, this would be done
using a combination of keymap-local-set, keymap-global-set and
various autoloads. With use-package, you can simplify this using the
:bind keyword.
* Menu:
* Global keybindings:: Bindings you can use anywhere.
* Binding in keymaps:: Bindings for particular modes.
* Binding to a keymap:: Binding a key to a keymap.
* Binding to repeat-maps:: Binding repeating keys.
* Displaying keybindings:: Displaying personal key bindings.

File: use-package.info, Node: Global keybindings, Next: Binding in keymaps, Up: Key bindings
4.2.1 Global keybindings
------------------------
To bind keys globally, the :bind keyword takes as its argument either
a single cons or a list of conses. Each cons has the form
(KEY . DEFINITION), where KEY is a string indicating the key to bind,
and DEFINITION is the name of a command (a symbol). Alternatively,
DEFINITION may be a cons (DESC . COMMAND), where DESC is a string
describing COMMAND, which is the name of a command to bind KEY to. The
syntax for the keys is similar to the syntax used by the kbd function
(see *note (emacs)Init Rebinding::, for more information).
Using :bind with a single cons
--------------------------------
Here is an example of using a single cons:
(use-package ace-jump-mode
:bind ("C-." . ace-jump-mode))
This does two things: first, it creates an autoload for the
ace-jump-mode command and defers loading of the ace-jump-mode
package until you actually use it. Second, it binds the key C-. to
that command globally.
Using :bind with a list of conses
-----------------------------------
Here is an example of using :bind with a list of conses:
(use-package hi-lock
:bind (("M-o l" . highlight-lines-matching-regexp)
("M-o r" . highlight-regexp)
("M-o w" . highlight-phrase)))
Using special keys
------------------
Inside key strings, special keys like TAB or F1F12 have to be
written inside angle brackets, e.g. "C-<up>". Standalone special
keys (and some combinations) can be written in square brackets,
e.g. [tab] instead of "<tab>".
Examples:
(use-package helm
:bind (("M-x" . helm-M-x)
("M-<f5>" . helm-find-files)
([f10] . helm-buffers-list)
([S-f10] . helm-recentf)))
Providing custom descriptions of commands
-----------------------------------------
When binding keys to commands with :bind, custom descriptions of the
commands may optionally be provided.
Examples:
(use-package avy
:bind ("C-:" ("Jump to char" . avy-goto-char)
"M-g f" ("Jump to line" . avy-goto-line)))
These descriptions can be used by other code that deals with key
bindings. For example, the GNU ELPA package which-key displays them
when showing key bindings, instead of the plain command names.
Remapping commands
------------------
Remapping commands with :bind and bind-key works as expected,
because when the binding is a vector, it is passed straight to
define-key. *Note (elisp)Remapping Commands::) for more information
about command remapping. For example, the following declaration will
rebind fill-paragraph (bound to M-q by default) to unfill-toggle:
(use-package unfill
:bind ([remap fill-paragraph] . unfill-toggle))
What :bind does behind the scenes
-----------------------------------
To understand what :bind does behind the scenes, it might be useful to
consider an example:
(use-package ace-jump-mode
:bind ("C-." . ace-jump-mode))
This could be expressed in a much more verbose way with the
:commands and :init keywords.
(use-package ace-jump-mode
:commands ace-jump-mode
:init
(bind-key "C-." 'ace-jump-mode))
Without using even the :commands keyword, we could also write the
above like so:
(use-package ace-jump-mode
:defer t
:init
(autoload 'ace-jump-mode "ace-jump-mode" nil t)
(bind-key "C-." 'ace-jump-mode))
Although these three forms are all equivalent, the first form is
usually the best, as it will save some typing.

File: use-package.info, Node: Binding in keymaps, Next: Binding to a keymap, Prev: Global keybindings, Up: Key bindings
4.2.2 Key bindings in local keymaps
-----------------------------------
Slightly different from binding a key to a keymap, is binding a key
_within_ a local keymap that only exists after the package is loaded.
use-package supports this with a :map modifier, taking the local
keymap to bind to:
(use-package helm
:bind (:map helm-command-map
("C-c h" . helm-execute-persistent-action)))
The effect of this statement is to wait until helm has loaded, and
then to bind the key C-c h to helm-execute-persistent-action within
Helms local keymap, helm-command-map.
Multiple uses of :map may be specified. Any binding occurring
before the first use of :map are applied to the global keymap:
(use-package term
:bind (("C-c t" . term)
:map term-mode-map
("M-p" . term-send-up)
("M-n" . term-send-down)
:map term-raw-map
("M-o" . other-window)
("M-p" . term-send-up)
("M-n" . term-send-down)))

File: use-package.info, Node: Binding to a keymap, Next: Binding to repeat-maps, Prev: Binding in keymaps, Up: Key bindings
4.2.3 Binding to keymaps
------------------------
Normally :bind expects that commands are functions that will be
autoloaded from the given package. However, this does not work if one
of those commands is actually a keymap, since keymaps are not functions,
and cannot be autoloaded using the built-in autoload function.
To handle this case, use-package offers a special, limited variant
of :bind called :bind-keymap. The only difference is that the
“commands” bound to by :bind-keymap must be keymaps defined in the
package, rather than command functions. This is handled behind the
scenes by generating custom code that loads the package containing the
keymap, and then re-executes your keypress after the first load, to
reinterpret that keypress as a prefix key.
For example:
(use-package foo
:bind-keymap ("C-c p" . foo-command-map))

File: use-package.info, Node: Binding to repeat-maps, Next: Displaying keybindings, Prev: Binding to a keymap, Up: Key bindings
4.2.4 Binding to repeat-maps
----------------------------
A special case of binding within a local keymap is when that keymap is
used by repeat-mode *note (emacs)Repeating::. These keymaps are
usually defined specifically for this. Using the :repeat-map keyword,
and passing it a name for the map it defines, will bind all following
keys inside that map, and (by default) set the repeat-map property of
each bound command to that map.
The following example creates a keymap called
git-gutter+-repeat-map, makes four bindings in it as above, then sets
the repeat-map property of each bound command (git-gutter+-next-hunk
git-gutter+-previous-hunk, git-gutter+-stage-hunks and
git-gutter+-revert-hunk) to that keymap.
(use-package git-gutter+
:bind
(:repeat-map git-gutter+-repeat-map
("n" . git-gutter+-next-hunk)
("p" . git-gutter+-previous-hunk)
("s" . git-gutter+-stage-hunks)
("r" . git-gutter+-revert-hunk)))
Specifying :exit inside the scope of :repeat-map will prevent the
repeat-map property being set, so that the command can be used from
within the repeat map, but after it using it the repeat map will no
longer be available. This is useful for commands often used at the end
of a series of repeated commands:
(use-package git-gutter+
:bind
(:repeat-map my/git-gutter+-repeat-map
("n" . git-gutter+-next-hunk)
("p" . git-gutter+-previous-hunk)
("s" . git-gutter+-stage-hunks)
("r" . git-gutter+-revert-hunk)
:exit
("c" . magit-commit-create)
("C" . magit-commit)
("b" . magit-blame)))
Specifying :continue _forces_ setting the repeat-map property
(just like _not_ specifying :exit), so the above snippet is equivalent
to:
(use-package git-gutter+
:bind
(:repeat-map my/git-gutter+-repeat-map
:exit
("c" . magit-commit-create)
("C" . magit-commit)
("b" . magit-blame)
:continue
("n" . git-gutter+-next-hunk)
("p" . git-gutter+-previous-hunk)
("s" . git-gutter+-stage-hunks)
("r" . git-gutter+-revert-hunk)))

File: use-package.info, Node: Displaying keybindings, Prev: Binding to repeat-maps, Up: Key bindings
4.2.5 Displaying personal keybinding
------------------------------------
The :bind keyword uses the bind-keys macro from the bind-key.el
library to set up keybindings. It keeps track of all keybindings you
make, so that you can display them separately from the default
keybindings.
Use M-x describe-personal-keybindings to see all keybindings youve
set using either the :bind keyword or the bind-keys macro.

File: use-package.info, Node: Hooks, Next: Modes and interpreters, Prev: Key bindings, Up: Configuring Packages
4.3 Hooks
=========
The :hook keyword allows adding functions onto hooks. It takes one
argument of the form HOOKS, specifying one or more functions to add to
one or more hooks. For the purposes of :hook, the name of hook
variables should always exclude the -hook suffix. It is appended
automatically for you, to save some typing.
For example, consider the following use-package declaration that
sets up autoloads for company-mode from the company package, and
adds company-mode to prog-mode-hook:
(use-package company
:commands company-mode
:init
(add-hook 'prog-mode-hook #'company-mode))
Using :hook, this can be simplified to:
(use-package company
:hook (prog-mode . company-mode))
Here, :hook will automatically set up autoloads for the
company-mode command, so there is no need to use :commands.
The :hook keyword will also assume that the name of the function
you want to add is the same as the package name with -mode appended to
it. Taking this into account, you can simplify the above to the
equivalent:
(use-package company
:hook prog-mode)
You can also provide a list of hooks. When multiple hooks should be
applied, the following examples are all equivalent:
(use-package company
:hook (prog-mode text-mode))
(use-package company
:hook ((prog-mode text-mode) . company-mode))
(use-package company
:hook ((prog-mode . company-mode)
(text-mode . company-mode)))
(use-package company
:commands company-mode
:init
(add-hook 'prog-mode-hook #'company-mode)
(add-hook 'text-mode-hook #'company-mode))
One common mistake when using :hook is to forget to omit the
-hook suffix, which, as already explained, is appended automatically.
Therefore, the following will not work, as it attempts to add a function
to non-existent prog-mode-hook-hook:
;; DOES NOT WORK
(use-package ace-jump-mode
:hook (prog-mode-hook . ace-jump-mode))
If you do not like this behavior, you can customize the user option
use-package-hook-name-suffix to nil. The value of this variable is
"-hook" by default.
The use of :hook, as with :bind, :mode, :interpreter, etc.,
causes the functions being hooked to implicitly be read as :commands.
This means that they will establish interactive autoload definitions
for that module, if not already defined as functions), and so :defer t
is also implied by :hook.

File: use-package.info, Node: Modes and interpreters, Next: Magic handlers, Prev: Hooks, Up: Configuring Packages
4.4 Modes and interpreters
==========================
Similar to :bind, you can use :mode and :interpreter to establish
a deferred binding within the auto-mode-alist and
interpreter-mode-alist variables. The specifier to either keyword can
be a cons cell, a list of cons cells, or a string or regexp.
The following example reproduces the default ruby-mode
configuration, exactly as it is in Emacs out-of-the-box. That mode is
enabled automatically when a file whose name matches the regexp
"\\.rb\\'" (a file with the .rb extension), or when the first line
of the file (known as the “shebang”) matches the string "ruby":
(use-package ruby-mode
:mode "\\.rb\\'"
:interpreter "ruby")
The default python-mode configuration can be reproduced using the
below declaration. Note that the package that should be loaded differs
from the mode name in this case, so we must use a cons:
;; The package is "python" but the mode is "python-mode":
(use-package python
:mode ("\\.py\\'" . python-mode)
:interpreter ("python" . python-mode))
Both the :mode and :interpreter keywords also accept a list of
regexps:
(use-package foo
;; Equivalent to "\\(ba[rz]\\)\\'":
:mode ("\\.bar\\'" "\\.baz\\'")
;; Equivalent to "\\(foo[ab]\\)":
:interpreter ("fooa" "foob"))

File: use-package.info, Node: Magic handlers, Next: User options, Prev: Modes and interpreters, Up: Configuring Packages
4.5 Magic handlers
==================
Similar to :mode and :interpreter, you can also use :magic and
:magic-fallback to cause certain function to be run if the beginning
of a file matches a given regular expression. The difference between
:magic and :magic-fallback, is that the latter has a lower priority
than :mode.
Here is an example:
(use-package pdf-tools
:magic ("%PDF" . pdf-view-mode)
:config
(pdf-tools-install :no-query))
This registers an autoloaded command for pdf-view-mode, defers
loading of pdf-tools, and runs pdf-view-mode if the beginning of a
buffer matches the string "%PDF".

File: use-package.info, Node: User options, Next: Faces, Prev: Magic handlers, Up: Configuring Packages
4.6 User options
================
In Emacs, you normally set customizable variables (user options) using
the M-x customize interface (*note (emacs)Easy Customization::). We
recommended this method for most users. However, it is also possible to
set them in your use-package declarations by using the :custom
keyword.
(use-package comint
:defer t
:custom
(comint-buffer-maximum-size 20000 "Increase comint buffer size.")
(comint-prompt-read-only t "Make the prompt read only."))
This is better than using setq in a :config block, as
customizable variables might have some code associated with it that
Emacs will execute when you assign values to them. In Emacs 29, there
is also the new setopt macro that does this for you.
Note that the values customized using this keyword are _not_ saved in
the standard Emacs custom-file. You should therefore set each user
option using either the :custom keyword _or_ M-x customize-option,
which will save customized values in the Emacs custom-file. Do not
use both for the same variable, as this risk having conflicting values
in your use-package declaration and your custom-file. This can lead
to problems that are both tricky and tedious to debug.

File: use-package.info, Node: Faces, Next: Hiding minor modes, Prev: User options, Up: Configuring Packages
4.7 Faces
=========
The :custom-face keyword allows customization of package custom faces.
(use-package eruby-mode
:custom-face
(eruby-standard-face ((t (:slant italic)))))
(use-package example
:custom-face
(example-1-face ((t (:foreground "LightPink"))))
(example-2-face ((t (:foreground "LightGreen"))) face-defspec-spec))
(use-package zenburn-theme
:preface
(setq my/zenburn-colors-alist
'((fg . "#DCDCCC") (bg . "#1C1C1C") (cyan . "#93E0E3")))
:custom-face
(region ((t (:background ,(alist-get my/zenburn-colors-alist 'cyan)))))
:config
(load-theme 'zenburn t))

File: use-package.info, Node: Hiding minor modes, Prev: Faces, Up: Configuring Packages
4.8 Hiding minor modes with diminish and delight
================================================
use-package supports the diminish and delight packages, both of which
make it possible remove or change minor mode strings in your mode-line.
Which one to use is up to you, but you should normally only use one or
the other never both.(1) To use either of them, you must first
install the corresponding package from GNU ELPA.
* Menu:
* Diminish:: Hiding minor modes with Diminish.
* Delight:: Hiding minor modes with Delight.
---------- Footnotes ----------
(1) When in doubt, you might as well use diminish.

File: use-package.info, Node: Diminish, Next: Delight, Up: Hiding minor modes
4.8.1 Diminish
--------------
When diminish(1) is installed, you can use the :diminish keyword. If
diminish is not installed, the :diminish keyword does nothing.
First, add the following declaration to the beginning of your init
file. The optional :ensure t makes sure the package is installed if
it isnt already (*note Installing packages::).
(use-package diminish :ensure t)
The :diminish keyword takes either a minor mode symbol, a cons of
the symbol and its replacement string, or just a replacement string, in
which case the minor mode symbol is guessed to be the package name with
-mode appended at the end:
(use-package abbrev
:diminish abbrev-mode
:config
(if (file-exists-p abbrev-file-name)
(quietly-read-abbrev-file)))
---------- Footnotes ----------
(1) The diminish package is installable from GNU ELPA.

File: use-package.info, Node: Delight, Prev: Diminish, Up: Hiding minor modes
4.8.2 Delight
-------------
When delight(1) is installed, you can use the :delight keyword. If
delight is not installed, the :delight keyword does nothing.
First, add the following declaration to the beginning of your init
file. The optional :ensure t makes sure the package is installed if
it isnt already (*note Installing packages::).
(use-package delight :ensure t)
The :delight keyword takes a minor mode symbol, a replacement
string, or quoted mode line data (in which case the minor mode symbol is
assumed to be the package name with -mode appended at the end), both
of these, or several lists of both. *Note (elisp)Mode Line Data::. If
no arguments are provided, the default mode name is hidden completely.
For example, the following hides everything for the foo-mode minor
mode in the foo package:
(use-package foo
:delight)
If the mode name doesnt match the package name with -mode
appended, provide a symbol instead. For example, the following hides
auto-revert-mode from the mode line:
;; Don't show anything for auto-revert-mode, which doesn't match
;; its package name.
(use-package autorevert
:delight auto-revert-mode)
You can also run arbitrary Lisp code. For example, to replace
foo-mode with the value of the current buffer:
(use-package foo
:delight '(:eval buffer-file-name))
Here is an example of hiding several built-in minor modes:
;; Completely hide visual-line-mode and change auto-fill-mode to " AF".
(use-package emacs
:delight
(auto-fill-function " AF")
(visual-line-mode))
---------- Footnotes ----------
(1) The delight package is installable from GNU ELPA.

File: use-package.info, Node: Installing packages, Next: Byte-compiling, Prev: Configuring Packages, Up: Top
5 Installing packages automatically
***********************************
The standard Emacs package manager is documented in the Emacs manual
(*note (emacs)Package Installation::). The use-package macro provides
the :ensure and :pin keywords, that interface with that package
manager to automatically install packages. This is particularly useful
if you use your init file on more than one system.
* Menu:
* Install package::
* Pinning packages::
* Other package managers::

File: use-package.info, Node: Install package, Next: Pinning packages, Up: Installing packages
5.1 Installing package
======================
The :ensure keyword makes use-package ask the Emacs package manager to
install a package if it is not already present on your system.
For example:
(use-package magit
:ensure t)
If you need to install a different package from the one named by
use-package, you can use a symbol:
(use-package tex
:ensure auctex)
You can customize the user option use-package-always-ensure to
non-nil if you want this behavior to be global for all packages.
(require 'use-package-ensure)
(setq use-package-always-ensure t)
You can override the above setting for a single package by adding
:ensure nil to its declaration.

File: use-package.info, Node: Pinning packages, Next: Other package managers, Prev: Install package, Up: Installing packages
5.2 Pinning packages using :pin
=================================
use-package can pin a package to a specific archive using the :pin
keyword.(1) This allows you to mix and match packages from different
archives. The primary use-case for this is preferring to install
packages from GNU ELPA or NonGNU ELPA (indicated by gnu and nongnu,
respectively), while installing specific packages from third-party
archives.
For example:
(use-package company
:ensure t
:pin gnu) ; GNU ELPA
Unfortunately, the third-party archive MELPA uses a versioning scheme
based on dates, which means that packages from that archive are always
preferred. If you are using that archive, we strongly encourage you to
customize use-package-always-pin to nongnu. This guarantees that
you are using a version of that package that has been specifically
marked for release by its developer, and not a development snapshot.
If you want to manually keep a package updated and ignore upstream
updates, you can pin it to manual. This will work as long as you have
not customized a repository to use that name in the package-archives
variable.
Example:
(use-package org
:ensure t
;; ignore org-mode from upstream and use a manually installed version
:pin manual)
use-package signals an error if you try to pin a package to an
archive that is not configured using package-archives (except from the
special manual archive).
---------- Footnotes ----------
(1) The :pin keyword has no effect on Emacs versions older than
24.4.

File: use-package.info, Node: Other package managers, Prev: Pinning packages, Up: Installing packages
5.3 Non-standard package managers
=================================
By default, use-package assumes that you are using the built-in
package.el package manager. We expect that most users will find that
it is more than capable enough, even for advanced use cases.
However, some users might prefer to use a third-party package manager
for a specific circumstance or use case. By setting the user option
use-package-ensure-function to the name of a function, you can direct
:ensure to use a different package manager for installing packages.
For more details, please see the documentation of the package manager
you are using. If you run into any bugs, it is often best to report
them directly to the developers of that package manager.

File: use-package.info, Node: Byte-compiling, Next: Troubleshooting, Prev: Installing packages, Up: Top
6 Byte-compiling your init file
*******************************
Some users might want to byte-compile their init file to make Emacs
startup even faster. This is not recommended in most cases, as the
speed-up is often too small to be worth it, and can lead to confusion if
the byte-compiled files are out-of-date. If you still want to do it,
read on.
use-package always loads every library that it can while a file is
being byte-compiled. This helps silence spurious warnings about unknown
variables and functions.
However, there are times when this is just not enough. For those
times, use the :defines and :functions keywords to introduce dummy
variable and function declarations solely for the sake of silencing
byte-compiler warnings. For example:
(use-package texinfo
:defines texinfo-section-list
:commands texinfo-mode
:init
(add-to-list 'auto-mode-alist '("\\.texi$" . texinfo-mode)))
If you need to silence a missing function warning, you can use
:functions:
(use-package ruby-mode
:mode "\\.rb\\'"
:interpreter "ruby"
:functions inf-ruby-keys
:config
(defun my-ruby-mode-hook ()
(require 'inf-ruby)
(inf-ruby-keys))
(add-hook 'ruby-mode-hook 'my-ruby-mode-hook))
Normally, use-package will load each package at compile time before
compiling the configuration, to ensure that any necessary symbols are in
scope to satisfy the byte-compiler. At times this can cause problems,
since a package may have special loading requirements, and all that you
want to use use-package for is to add a configuration to the
eval-after-load hook. In such cases, use the :no-require keyword:
(use-package foo
:no-require t
:config
(message "Evaluate this immediately after loading `foo'"))

File: use-package.info, Node: Troubleshooting, Next: Keyword extensions, Prev: Byte-compiling, Up: Top
7 Troubleshooting
*****************
If an error occurs while initializing or configuring a package, this
will not stop your Emacs from loading. Instead, use-package captures
the error and reports it in a special *Warnings* popup buffer, so that
you can debug the situation in an otherwise functional Emacs.
If you are having trouble when starting Emacs, you can pass Emacs the
--debug-init command line flag. *Note (emacs)Initial Options::. To
get even more information when using that flag, add the following to
your init file (these options are documented below):
(when init-file-debug
(setq use-package-verbose t
use-package-expand-minimally nil
use-package-compute-statistics t
debug-on-error t))
Since use-package is a macro, the first step when you need to dig
deeper is usually to see what Emacs Lisp code your declaration expands
to. You can either use the command M-x pp-macroexpand-last-sexp, or
wrap the use-package declaration in macroexpand and evaluate it. It
is a good idea to include their output in any bugs you file for
use-package.
* Menu:
* Troubleshooting Options::
* Gathering Statistics::
* Disabling a package::

File: use-package.info, Node: Troubleshooting Options, Next: Gathering Statistics, Up: Troubleshooting
7.1 Options that help when troubleshooting
==========================================
By default, use-package will attempts to catch and report errors that
occur during expansion of use-package declarations in your init file.
Customize the user option use-package-expand-minimally to a non-nil
value to disable this checking.
This behavior may be overridden locally using the :catch keyword.
If t or nil, it enables or disables catching errors at load time.
It can also be a function taking two arguments: the keyword being
processed at the time the error was encountered, and the error object
(as generated by condition-case). For example:
(use-package example
;; Note that errors are never trapped in the preface, since doing so would
;; hide definitions from the byte-compiler.
:preface (message "I'm here at byte-compile and load time")
:init (message "I'm always here at startup")
:config
(message "I'm always here after the package is loaded")
(error "oops")
;; Don't try to (require 'example), this is just an example!
:no-require t
:catch (lambda (keyword err)
(message (error-message-string err))))
Evaluating the above form will print these messages:
Im here at byte-compile and load time
Im always here at startup
Configuring package example...
Im always here after the package is loaded
oops

File: use-package.info, Node: Gathering Statistics, Next: Disabling a package, Prev: Troubleshooting Options, Up: Troubleshooting
7.2 Gathering Statistics
========================
When a package is loaded, and if you have use-package-verbose set to
t, or if the package takes longer than 0.1 seconds to load, you will
see a message to indicate this loading activity in the *Messages*
buffer. The same will happen for configuration, or :config blocks,
that take longer than 0.1 seconds to execute.
If youd like to see a summary how many packages youve loaded, what
stage of initialization theyve reached, and how much aggregate time
theyve spent (roughly), you can customize the user option
use-package-compute-statistics to a non-nil value. Then reload your
packages, normally by restarting Emacs, to make sure that use-package
can gather statistics for all your packages.
Run the command M-x use-package-report to see the results. The
buffer displayed is a tabulated list. To sort rows based on a
particular column, move point to it and type S, or click the column
name at the top of the buffer on graphical displays.
To reset all statistics that use-package has gathered for the current
Emacs invocation, run the command M-x use-package-reset-statistics.
Note that, if you are setting use-package-compute-statistics
directly in your init file, and not with customize, you must do this
after loading use-package, but before any use-package forms.

File: use-package.info, Node: Disabling a package, Prev: Gathering Statistics, Up: Troubleshooting
7.3 Disabling a package
=======================
The :disabled keyword inhibits loading a package, and all its
customizations. It is equivalent to commenting out or deleting the
definition.
You could use this, for example, to temporarily disable a package
that youre having difficulties with, or to avoid loading a package that
youre not currently using.
This example disables the foo package:
(use-package foo
:disabled)
When byte-compiling your init file, use-package omits disabled
declarations from the output entirely, in order to make Emacs startup
faster.

File: use-package.info, Node: Keyword extensions, Next: History, Prev: Troubleshooting, Up: Top
Appendix A Keyword extensions
*****************************
use-package is based on an extensible framework that makes it easy for
package authors to add new keywords, or modify the behavior of existing
keywords.
Some keyword extensions are included with use-package, and can be
optionally enabled.
* Menu:
* use-package-ensure-system-package::
* Creating an extension::

File: use-package.info, Node: use-package-ensure-system-package, Next: Creating an extension, Up: Keyword extensions
A.1 :use-package-ensure-system-package
======================================
The :ensure-system-package keyword allows you to ensure certain
executables are available on your system alongside your package
declarations.(1)
To use this extension, add this immediately after loading
use-package:
(use-package use-package-ensure-system-package)
Now you can use the :ensure-system-package keyword. Heres an
example usage:
(use-package foo
:ensure-system-package foo)
This will expect a global binary package to exist called foo. If
it does not, it will use your system package manager to attempt an
install of a binary by the same name asynchronously. This requires the
GNU ELPA package system-packages
(https://gitlab.com/jabranham/system-packages), so for this to work you
must install that first.
One way of making sure it is installed is with use-package together
with :ensure.
(use-package system-packages
:ensure t)
For example, on a Debian GNU/Linux system, this would call apt-get
install foo.
If the package is named differently than the binary, you can use a
cons in the form of (binary . package-name). For example:
(use-package foo
:ensure-system-package
(foocmd . foo))
On a Debian GNU/Linux system, this would call apt install foo if
Emacs could not locate the executable foocmd.(2)
:ensure-system-package can also take a cons where its cdr is a
string that will get called by (async-shell-command) to install if it
isnt found. This does not depend upon any external package.
(use-package tern
:ensure-system-package (tern . "npm i -g tern"))
To install several packages, you can pass in a list of conses:
(use-package ruby-mode
:ensure-system-package
((rubocop . "gem install rubocop")
(ruby-lint . "gem install ruby-lint")
(ripper-tags . "gem install ripper-tags")
(pry . "gem install pry")))
Finally, in case the package dependency does not provide a global
executable, you can ensure packages exist by checking the presence of a
file path by providing a string like so:
(use-package dash-at-point
:if (eq system-type 'darwin)
:ensure-system-package
("/Applications/Dash.app" . "brew cask install dash"))
:ensure-system-package will use system-packages-install to
install system packages, except where a custom command has been
specified, in which case it will be executed verbatim by
async-shell-command.
The user options system-packages-package-manager and
system-packages-use-sudo are honored, but not for custom commands.
Custom commands should include the call to sudo in the command if
needed.
---------- Footnotes ----------
(1) On macOS, you will want to make sure exec-path is cognisant of
all binary package names that you would like to ensure are installed.
The exec-path-from-shell
(https://github.com/purcell/exec-path-from-shell) package is often a
good way to do this.
(2) For manual testing, you could use the executable-find function,
which is what system-packages uses internally.

File: use-package.info, Node: Creating an extension, Prev: use-package-ensure-system-package, Up: Keyword extensions
A.2 How to create an extension keyword
======================================
This section describes how to create a new keyword.
1. Add the keyword.
The first step is to add your keyword at the right place in
use-package-keywords. This list determines the order in which
things will happen in the expanded code. You should never change
this order, but it gives you a framework within which to decide
when your keyword should fire.
2. Create a normalizer.
The job of the normalizer is take a list of arguments (possibly
nil), and turn it into the single argument (which could still be
a list) that should appear in the final property list used by
use-package.
Define a normalizer for your keyword by defining a function named
after the keyword, for example:
(defun use-package-normalize/:pin (name-symbol keyword args)
(use-package-only-one (symbol-name keyword) args
(lambda (label arg)
(cond
((stringp arg) arg)
((symbolp arg) (symbol-name arg))
(t
(use-package-error
":pin wants an archive name (a string)"))))))
3. Create a handler.
Once you have a normalizer, you must create a handler for the
keyword.
Handlers can affect the handling of keywords in two ways. First,
it can modify the state plist before recursively processing the
remaining keywords, to influence keywords that pay attention to the
state (one example is the state keyword :deferred, not to be
confused with the use-package keyword :defer). Then, once the
remaining keywords have been handled and their resulting forms
returned, the handler may manipulate, extend, or just ignore those
forms.
The task of each handler is to return a _list of forms_
representing code to be inserted. It does not need to be a progn
list, as this is handled automatically in other places. Thus it is
common to see the idiom of using use-package-concat to add new
functionality before or after a code body, so that only the minimum
code necessary is emitted as the result of a use-package
expansion.
This is an example handler:
(defun use-package-handler/:pin (name-symbol keyword archive-name rest state)
(let ((body (use-package-process-keywords name-symbol rest state)))
;; This happens at macro expansion time, not when the expanded code is
;; compiled or evaluated.
(if (null archive-name)
body
(use-package-pin-package name-symbol archive-name)
(use-package-concat
body
`((push '(,name-symbol . ,archive-name)
package-pinned-packages))))))
4. Test it.
After the keyword has been inserted into use-package-keywords,
and a normalizer and a handler defined, you can now test it by
seeing how usages of the keyword will expand. For this, use M-x
pp-macroexpand-last-sexp with the cursor set immediately after the
(use-package ...) expression.

File: use-package.info, Node: History, Next: GNU Free Documentation License, Prev: Keyword extensions, Up: Top
Appendix B History and acknowledgments
**************************************
use-package was written by John Wiegley. Its development started in
2012, and it got merged into Emacs in 2022, in preparation of the
release of Emacs 29.1.
Dozens of people have contributed to use-package over the years with
bug reports, documentation and code. They are too many to list here,
but we thank them all for their contributions.
This Texinfo manual was written by Stefan Kangas, as a significant
rewrite of the old use-package manual and README.

File: use-package.info, Node: GNU Free Documentation License, Next: Index, Prev: History, Up: Top
Appendix C GNU Free Documentation License
*****************************************
Version 1.3, 3 November 2008
Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
<https://fsf.org/>
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Permission is granted to copy, distribute and/or modify this document
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File: use-package.info, Node: Index, Prev: GNU Free Documentation License, Up: Top
Index
*****
[index]
* Menu:
* :after: Loading sequentially. (line 6)
* :all (with :after): Loading sequentially. (line 34)
* :any (with :after): Loading sequentially. (line 34)
* :autoload: Manual autoloads. (line 6)
* :bind: Key bindings. (line 6)
* :bind <1>: Global keybindings. (line 6)
* :bind-keymap, inside :bind: Binding to a keymap. (line 6)
* :catch: Troubleshooting Options.
(line 11)
* :commands: Manual autoloads. (line 6)
* :config: Config keyword. (line 6)
* :continue, inside :repeat-map and :bind: Binding to repeat-maps.
(line 45)
* :custom: User options. (line 6)
* :custom-face: Faces. (line 6)
* :defer: Deferring loading. (line 25)
* :defines: Byte-compiling. (line 16)
* :delight: Delight. (line 6)
* :demand: Forcing loading. (line 6)
* :diminish: Diminish. (line 6)
* :disabled: Disabling a package. (line 6)
* :ensure: Install package. (line 6)
* :ensure-system-package: use-package-ensure-system-package.
(line 6)
* :exit, inside :repeat-map and :bind: Binding to repeat-maps.
(line 27)
* :functions: Byte-compiling. (line 16)
* :hook: Hooks. (line 6)
* :if: Conditional loading. (line 6)
* :init: Init keyword. (line 6)
* :interpreter: Modes and interpreters.
(line 6)
* :load-path: Load path. (line 6)
* :magic: Magic handlers. (line 6)
* :magic-fallback: Magic handlers. (line 6)
* :map, inside :bind: Binding in keymaps. (line 6)
* :mode: Modes and interpreters.
(line 6)
* :no-require: Byte-compiling. (line 41)
* :pin: Pinning packages. (line 6)
* :preface: Preface keyword. (line 6)
* :repeat-map, inside :bind: Binding to repeat-maps.
(line 6)
* :requires: Load dependencies. (line 6)
* :unless: Conditional loading. (line 6)
* :when: Conditional loading. (line 6)
* autoloading packages: Deferring loading. (line 6)
* binding keys: Key bindings. (line 6)
* conditional loading before :preface or :ensure: Conditional loading.
(line 59)
* debugging: Troubleshooting. (line 6)
* describe-personal-keybindings: Displaying keybindings.
(line 6)
* disable package: Disabling a package. (line 6)
* expanding macro, for troubleshooting: Troubleshooting. (line 22)
* hooks: Hooks. (line 6)
* key bindings: Key bindings. (line 6)
* loading lazily: Deferring loading. (line 6)
* loading packages: Loading Packages. (line 6)
* multiple hooks: Hooks. (line 37)
* prevent a package from loading at compile-time: Byte-compiling.
(line 41)
* repeat-mode and use-package, using: Binding to repeat-maps.
(line 6)
* reporting bugs: Troubleshooting. (line 22)
* triggers, for loading packages: Deferring loading. (line 14)
* troubleshooting: Troubleshooting. (line 6)
* use-package-always-defer: Deferring loading. (line 68)
* use-package-always-pin: Pinning packages. (line 19)
* use-package-compute-statistics: Gathering Statistics. (line 12)
* use-package-ensure-function: Other package managers.
(line 10)
* use-package-expand-minimally: Troubleshooting Options.
(line 6)
* use-package-hook-name-suffix: Hooks. (line 65)
* use-package-report: Gathering Statistics. (line 19)
* use-package-reset-statistics: Gathering Statistics. (line 24)
* use-package-verbose: Gathering Statistics. (line 6)

Tag Table:
Node: Top947
Node: Basic Concepts3143
Node: Getting Started4569
Node: Loading Packages7734
Node: Loading basics9243
Ref: Loading basics-Footnote-110804
Node: Deferring loading10888
Node: Forcing loading14111
Node: Conditional loading14796
Node: Loading sequentially16960
Node: Load dependencies19541
Node: Load path20522
Node: Manual autoloads21759
Node: Configuring Packages22415
Node: Lisp Configuration23174
Node: Preface keyword24038
Node: Init keyword24944
Node: Config keyword25564
Node: Best practices26289
Node: Key bindings27766
Node: Global keybindings28536
Node: Binding in keymaps32350
Node: Binding to a keymap33561
Node: Binding to repeat-maps34595
Node: Displaying keybindings36982
Node: Hooks37544
Node: Modes and interpreters40312
Node: Magic handlers41851
Node: User options42680
Node: Faces44095
Node: Hiding minor modes44892
Ref: Hiding minor modes-Footnote-145599
Node: Diminish45654
Ref: Diminish-Footnote-146593
Node: Delight46652
Ref: Delight-Footnote-148460
Node: Installing packages48524
Node: Install package49137
Node: Pinning packages49967
Ref: Pinning packages-Footnote-151661
Node: Other package managers51741
Node: Byte-compiling52613
Node: Troubleshooting54605
Node: Troubleshooting Options55956
Node: Gathering Statistics57518
Node: Disabling a package59085
Node: Keyword extensions59801
Node: use-package-ensure-system-package60289
Ref: use-package-ensure-system-package-Footnote-163298
Ref: use-package-ensure-system-package-Footnote-263566
Node: Creating an extension63697
Node: History67109
Node: GNU Free Documentation License67782
Node: Index93134

End Tag Table

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