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This is company.info, produced by makeinfo version 6.8 from
company.texi.
This user manual is for Company version 1.0.3-snapshot
(7 December 2024).
Copyright © 2021-2024 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.
INFO-DIR-SECTION Emacs misc features
START-INFO-DIR-ENTRY
* Company: (company). A modular text completion framework.
END-INFO-DIR-ENTRY

File: company.info, Node: Top, Next: Overview, Up: (dir)
Company
*******
Company is a modular text completion framework for GNU Emacs.
The goal of this document is to lay out the foundational knowledge of
the package, so that the readers of the manual could competently start
adapting Company to their needs and preferences.
This user manual is for Company version 1.0.3-snapshot
(7 December 2024).
Copyright © 2021-2024 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.
* Menu:
* Overview:: Terminology and Structure
* Getting Started:: Quick Start Guide
* Customization:: User Options
* Frontends:: Frontends Usage Instructions
* Backends:: Backends Usage Instructions
* Troubleshooting:: When Something Goes Wrong
* Index::
— The Detailed Node Listing —
Overview
* Terminology::
* Structure::
Getting Started
* Installation::
* Initial Setup::
* Usage Basics::
* Commands::
Customization
* Customization Interface::
* Configuration File::
Frontends
* Tooltip Frontends::
* Preview Frontends::
* Echo Frontends::
* Candidates Search::
* Filter Candidates::
* Quick Access a Candidate::
Backends
* Backends Usage Basics::
* Grouped Backends::
* Package Backends::
* Candidates Post-Processing::

File: company.info, Node: Overview, Next: Getting Started, Prev: Top, Up: Top
1 Overview
**********
“Company” is a modular text completion framework for GNU Emacs.
In other words, it is a package for retrieving, manipulating, and
displaying text completion candidates. It aims to assist developers,
writers, and scientists during code and text writing.
* Menu:
* Terminology::
* Structure::

File: company.info, Node: Terminology, Next: Structure, Up: Overview
1.1 Terminology
===============
“Completion” is an act of intelligently guessing possible variants of
words based on already typed characters. To “complete” a word means to
insert a correctly guessed variant into the buffer.
Consequently, the “candidates” are the aforementioned guessed variants
of words. Each of the candidates has the potential to be chosen for
successful completion. And each of the candidates contains the
initially typed characters: either only at the beginning (so-called
“prefix matches”), or also inside of a candidate (“non-prefix matches”).
Which matching method is used, depends on the current _backend_ (*note
Structure::). ‘company-capf’ is an example of a backend that supports a
number of particular non-prefix matching algorithms which are
configurable through the user option ‘completion-styles’, which see.
For illustrations on how Company visualizes the matches, *note
Frontends::.
The package’s name ‘Company’ is based on the combination of the two
words: ‘Complete’ and ‘Anything’. These words reflect the package’s
commitment to handling completion candidates and its extensible nature
allowing it to cover a wide range of usage scenarios.

File: company.info, Node: Structure, Prev: Terminology, Up: Overview
1.2 Structure
=============
The Company is easily extensible because its significant building blocks
are pluggable modules: backends (*note Backends::) and frontends (*note
Frontends::).
The “backends” are responsible for retrieving completion candidates;
which are then displayed by the “frontends”. For an easy and quick
initial setup, Company is supplied with the preconfigured sets of the
backends and frontends. The default behavior of the modules can be
adjusted for particular needs, and preferences. It is also typical to
utilize backends from a variety of third-party libraries
(https://github.com/company-mode/company-mode/wiki/Third-Party-Packages),
developed to be pluggable with Company.
But Company consists not only of the backends and frontends.
A core of the package plays the role of a controller, connecting the
modules, making them work together; and exposing configurations and
commands for the user to operate with. For more details, *note
Customization:: and *note Commands::.
Also, Company is bundled with an alternative workflow configuration
“company-tng” — defining ‘company-tng-frontend’, ‘company-tng-mode’, and
‘company-tng-map’ — that allows performing completion with just <TAB>.
To enable this configuration, add the following line to the Emacs
initialization file (*note (emacs)Init File::):
(add-hook 'after-init-hook 'company-tng-mode)

File: company.info, Node: Getting Started, Next: Customization, Prev: Overview, Up: Top
2 Getting Started
*****************
This chapter provides basic instructions for Company setup and usage.
* Menu:
* Installation::
* Initial Setup::
* Usage Basics::
* Commands::

File: company.info, Node: Installation, Next: Initial Setup, Up: Getting Started
2.1 Installation
================
Company package is distributed via commonly used package archives in a
form of both stable and development releases. To install Company, type
‘M-x package-install <RET> company <RET>’.
For more details on Emacs package archives, *note (emacs)Packages::.

File: company.info, Node: Initial Setup, Next: Usage Basics, Prev: Installation, Up: Getting Started
2.2 Initial Setup
=================
The package Company provides a minor mode “company-mode”.
To activate the _company-mode_, execute the command ‘M-x company-mode’
that toggles the mode on and off. When it is switched on, the mode line
(*note (emacs)Mode line::) should indicate its presence with an
indicator ‘company’.
After _company-mode_ had been enabled, the package auto-starts
suggesting completion candidates. The candidates are retrieved and
shown according to the typed characters and the default (until the user
specifies otherwise) configurations.
To have Company always enabled for the following sessions, add the line
‘(global-company-mode)’ to the Emacs configuration file (*note
(emacs)Init File::).

File: company.info, Node: Usage Basics, Next: Commands, Prev: Initial Setup, Up: Getting Started
2.3 Usage Basics
================
By default — having _company-mode_ enabled (*note Initial Setup::) — a
tooltip with completion candidates is shown when the user types a few
characters.
To initiate completion manually, use the command ‘M-x company-complete’.
To select next or previous of the shown completion candidates, use
respectively key bindings ‘C-n’ and ‘C-p’, then do one of the following:
• Hit <RET> to choose a selected candidate for completion.
• Hit <TAB> to expand the “common part” of all completions. Exactly
what that means, can vary by backend. In the simplest case it’s
the longest string that all completion start with, but when a
backend returns _non-prefix matches_, it can implement the same
kind of expansion logic for the input string.
• Hit ‘C-g’ to stop activity of Company.

File: company.info, Node: Commands, Prev: Usage Basics, Up: Getting Started
2.4 Commands
============
Under the hood, mentioned in the previous section keys are bound to the
commands of the out-of-the-box Company.
‘C-n’
‘M-n’
Select the next candidate (‘company-select-next-or-abort’,
‘company-select-next’).
‘C-p’
‘M-p’
Select the previous candidate (‘company-select-previous-or-abort’,
‘company-select-previous’).
‘RET’
‘<return>’
Insert the selected candidate (‘company-complete-selection’).
Restart completion if a new field is entered.
‘TAB’
‘<tab>’
Insert the _common part_ of all completion candidates or — if no
_common part_ is present — select the next candidate
(‘company-complete-common-or-cycle’). In the latter case,
wraparound is implicitly enabled (*note
company-selection-wrap-around::).
‘C-g’
‘<ESC ESC ESC>’
Cancel _company-mode_ activity (‘company-abort’).
‘C-h’
‘<F1>’
Display a buffer with the documentation for the selected candidate
(‘company-show-doc-buffer’). With a prefix argument (‘C-u C-h’,
‘C-u <F1>’), this command toggles between temporary showing the
documentation and keeping the documentation buffer up-to-date
whenever the selection changes.
‘C-w’
Display a buffer with the definition of the selected candidate
(‘company-show-location’).
The full list of the default key bindings is stored in the variables
‘company-active-map’ and ‘company-search-map’ (1).
Moreover, Company is bundled with a number of convenience commands that
do not have default key bindings defined. The following examples
illustrate how to assign key bindings to such commands.
(global-set-key (kbd "<tab>") #'company-indent-or-complete-common)
(with-eval-after-load 'company
(define-key company-active-map (kbd "M-/") #'company-complete)
(define-key company-active-map (kbd "C-M-/") #'company-complete-common))
In the same manner, an additional key can be assigned to a command or a
command can be unbound from a key. For instance:
(with-eval-after-load 'company
(define-key company-active-map (kbd "M-.") #'company-show-location)
(define-key company-active-map (kbd "RET") nil))
---------- Footnotes ----------
(1) For a more user-friendly output of the pre-defined key bindings,
utilize ‘M-x describe-keymap <RET> company-active-map’ or
‘C-h f <RET> company-mode’.

File: company.info, Node: Customization, Next: Frontends, Prev: Getting Started, Up: Top
3 Customization
***************
Emacs provides two equally acceptable ways for user preferences
configuration: via customization interface (for more details, *note
(emacs)Easy Customization::) and a configuration file (*note (emacs)Init
File::). Naturally, Company can be configured by both of these
approaches.
* Menu:
* Customization Interface::
* Configuration File::

File: company.info, Node: Customization Interface, Next: Configuration File, Up: Customization
3.1 Customization Interface
===========================
In order to employ the customization interface, run
‘M-x customize-group <RET> company’.
This interface outputs all the options available for user customization,
so you may find it beneficial to review this list even if you are going
to configure Company with the configuration file.
For instructions on how to change the settings, *note (emacs)Changing a
Variable::.

File: company.info, Node: Configuration File, Prev: Customization Interface, Up: Customization
3.2 Configuration File
======================
Company is a customization-rich package. This section lists some of the
core settings that influence its overall behavior.
-- User Option: company-minimum-prefix-length
This is one of the values (together with ‘company-idle-delay’),
based on which Company auto-stars looking up completion candidates.
This option configures how many characters have to be typed in by a
user before candidates start to be collected and displayed. An
often choice nowadays is to configure this option to a lower number
than the default value of ‘3’.
-- User Option: company-idle-delay
This is the second of the options that configure Company’s
auto-start behavior (together with
‘company-minimum-prefix-length’). The value of this option defines
how fast Company is going to react to the typed input, such that
setting ‘company-idle-delay’ to ‘0’ makes Company react
immediately, ‘nil’ disables auto-starting, and a larger value
postpones completion auto-start for that number of seconds. For an
even fancier setup, set this option value to a predicate function,
as shown in the following example:
(setq company-idle-delay
(lambda () (if (company-in-string-or-comment) nil 0.3)))
-- User Option: company-inhibit-inside-symbols
You can set this option to ‘t’ to disable the auto-start behavior
when in the middle of a symbol.
-- User Option: company-global-modes
This option allows to specify in which major modes _company-mode_
can be enabled by ‘(global-company-mode)’. *Note Initial Setup::.
The default value of ‘t’ enables Company in all major modes.
Setting ‘company-global-modes’ to ‘nil’ equal in action to toggling
off _global-company-mode_. Providing a list of major modes results
in having _company-mode_ enabled in the listed modes only. For the
opposite result, provide a list of major modes with ‘not’ being the
first element of the list, as shown in the following example:
(setq company-global-modes '(not erc-mode message-mode eshell-mode))
-- User Option: company-selection-wrap-around
Enable this option to loop (cycle) the candidates’ selection: after
selecting the last candidate on the list, a command to select the
next candidate does so with the first candidate. By default, this
option is disabled, which means the selection of the next candidate
stops on the last item. The selection of the previous candidate is
influenced by this option similarly.
-- User Option: company-require-match
To allow typing in characters that don’t match the candidates, set
the value of this option to ‘nil’. For an opposite behavior (that
is, to disallow non-matching input), set it to ‘t’. By default,
Company is configured to require a matching input only if the user
invokes completion manually or selects a candidate; by having the
option configured to call the function ‘company-explicit-action-p’.
-- User Option: company-lighter-base
This user options allows to configure a string indicator of the
enabled _company-mode_ in the mode line. The default value is
‘company’.
-- User Option: company-insertion-on-trigger
One more pair of the user options may instruct Company to complete
with the selected candidate by typing one of the
‘company-insertion-triggers’. The user option
‘company-insertion-on-trigger’ can be enabled or disabled by
setting its value to one of: ‘nil’, ‘t’, or a predicate function
name. *note Predicate: (eintr)Wrong Type of Argument.
-- User Option: company-insertion-triggers
This option has an effect only when ‘company-insertion-on-trigger’
is enabled. The value can be one of: a string of characters, a
list of syntax description characters (*note (elisp)Syntax Class
Table::), or a predicate function. By default, this user option is
set to the list of the syntax characters: ‘(?\ ?\) ?.)’, which
translates to the whitespaces, close parenthesis, and punctuation.
It is safe to configure the value to a character that can
potentially be part of a valid completion; in this case, Company
does not treat such characters as triggers.
Hooks
-----
Company exposes the following life-cycle hooks:
-- User Option: company-completion-started-hook
-- User Option: company-completion-cancelled-hook
-- User Option: company-completion-finished-hook
-- User Option: company-after-completion-hook

File: company.info, Node: Frontends, Next: Backends, Prev: Customization, Up: Top
4 Frontends
***********
Company is packaged with several frontends and provides a predefined set
of enabled frontends. A list of the enabled frontends can be changed by
configuring the user option ‘company-frontends’.
Each frontend is simply a function that receives a command and acts
accordingly to it: outputs candidates, hides its output, refreshes
displayed data, and so on.
All of the Company frontends can be categorized by the type of the
output into the three groups: “tooltip-”, “preview-”, and “echo-”
frontends. We overview these groups in the first sections of this
chapter. The sections that follow are dedicated to the ways the
displayed candidates can be searched, filtered, and quick-accessed.
* Menu:
* Tooltip Frontends::
* Preview Frontends::
* Echo Frontends::
* Candidates Search::
* Filter Candidates::
* Quick Access a Candidate::

File: company.info, Node: Tooltip Frontends, Next: Preview Frontends, Up: Frontends
4.1 Tooltip Frontends
=====================
This group of frontends displays completion candidates in an overlayed
tooltip (aka pop-up). Company provides three _tooltip frontends_,
listed below.
-- Function: company-pseudo-tooltip-unless-just-one-frontend
This is one of the default frontends. It starts displaying a
tooltip only if more than one completion candidate is available,
which nicely combines — and it is done so by default — with
‘company-preview-if-just-one-frontend’, *note Preview Frontends::.
-- Function: company-pseudo-tooltip-frontend
This frontend outputs a tooltip for any number of completion
candidates.
-- Function: company-pseudo-tooltip-unless-just-one-frontend-with-delay
This is a peculiar frontend, that displays a tooltip only if more
than one candidate is available, and only after a delay. The delay
can be configured with the user option
‘company-tooltip-idle-delay’. A typical use case for plugging in
this frontend would be displaying a tooltip only on a manual
request (when needed), as shown in the following example:
(setq company-idle-delay 0
company-tooltip-idle-delay 10
company-require-match nil
company-frontends
'(company-pseudo-tooltip-unless-just-one-frontend-with-delay
company-preview-frontend
company-echo-metadata-frontend)
company-backends '(company-capf))
(global-set-key (kbd "<tab>")
(lambda ()
(interactive)
(let ((company-tooltip-idle-delay 0.0))
(company-complete)
(and company-candidates
(company-call-frontends 'post-command)))))
User Options
------------
To change the _tooltip frontends_ configuration, adjust the following
user options.
-- User Option: company-tooltip-align-annotations
An “annotation” is a string that carries additional information
about a candidate; such as a data type, function arguments, or
whatever a backend appoints to be a valuable piece of information
about a candidate. By default, the annotations are shown right
beside the candidates. Setting the option value to ‘t’ aligns
annotations to the right side of the tooltip.
(setq company-tooltip-align-annotations t)
[image src="./images/small/tooltip-annotations.png"]
-- User Option: company-tooltip-annotation-padding
Adds left padding to the candidates’ annotations. It is disabled
by default. If ‘company-tooltip-align-annotations’ is enabled,
‘company-tooltip-annotation-padding’ defines the minimum spacing
between a candidate and annotation, with the default value of 1.
(setq company-tooltip-annotation-padding 1)
-- User Option: company-tooltip-limit
Controls the maximum number of the candidates shown simultaneously
in the tooltip (the default value is ‘10’). When the number of the
available candidates is larger than this option’s value, Company
paginates the results.
(setq company-tooltip-limit 4)
[image src="./images/small/tooltip-limit.png"]
-- User Option: company-tooltip-offset-display
Use this option to choose in which way to output paginated results.
The default value is ‘scrollbar’. Another supported value is
‘lines’; choose it to show the quantity of the candidates not
displayed by the current tooltip page.
(setq company-tooltip-offset-display 'lines)
[image src="./images/small/tooltip-offset-display.png"]
-- User Option: company-tooltip-minimum
This user option acts only when a tooltip is shown close to the
bottom of a window. It guarantees visibility of this number of
completion candidates below point. When the number of lines
between point and the bottom of a window is less than
‘company-tooltip-minimum’ value, the tooltip is displayed above
point.
(setq company-tooltip-minimum 4)
[image src="./images/small/tooltip-minimum-below.png"]
[image src="./images/small/tooltip-minimum-above.png"]
-- User Option: company-tooltip-flip-when-above
When this setting is enabled, no matter if a tooltip is shown above
or below point, the candidates are always listed starting near
point. (Putting it differently, the candidates are mirrored
vertically if a tooltip changes its position, instead of being
commonly listed top-to-bottom.)
(setq company-tooltip-flip-when-above t)
[image src="./images/small/tooltip-flip.png"]
-- User Option: company-tooltip-minimum-width
Sets the minimum width of a tooltip, excluding the margins and the
scroll bar. Changing this value especially makes sense if the user
navigates between tooltip pages. Keeping this value at the default
‘0’ allows Company to always adapt the width of the tooltip to the
longest shown candidate. Enlarging ‘company-tooltip-minimum-width’
prevents possible significant shifts in the width of the tooltip
when navigating to the next/previous tooltip page. (For an
alternate solution, see ‘company-tooltip-width-grow-only’.)
-- User Option: company-tooltip-width-grow-only
This is another way to restrict auto-adaptation of the tooltip
width (another is by adjusting ‘company-tooltip-minimum-width’
value) when navigating between the tooltip pages.
-- User Option: company-tooltip-maximum-width
This user option controls the maximum width of the tooltip inner
area. By default, its value is pseudo-limitless, potentially
permitting the output of extremely long candidates. But if long
lines become an issue, set this option to a smaller number, such as
‘60’ or ‘70’.
-- User Option: company-tooltip-margin
Controls the width of the “margin” on the sides of the tooltip
inner area. If ‘company-format-margin-function’ is set,
‘company-tooltip-margin’ defines only the right margin.
(setq company-tooltip-margin 3)
[image src="./images/small/tooltip-margin.png"]
Candidates Icons
----------------
An “icon” is an image or a text that represents a candidate’s kind; it
is displayed in front of a candidate. The term “kind” here stands for a
high-level category a candidate fits into. (Such as ‘array’,
‘function’, ‘file’, ‘string’, ‘color’, etc. For an extended list of the
possible _kinds_, see the user option ‘company-text-icons-mapping’ or
the variable ‘company-vscode-icons-mapping’.)
-- User Option: company-format-margin-function
Allows setting a function to format the left margin of a tooltip
inner area; namely, to output candidate’s _icons_. The predefined
formatting functions are listed below. The user may also set this
option to a custom function. To disable left margin formatting,
set the value of the option to ‘nil’ (this way control over the
size of the left margin returns to the user option
‘company-tooltip-margin’).
-- Function: company-vscode-dark-icons-margin
-- Function: company-vscode-light-icons-margin
These functions utilize VSCode dark and light theme icon sets (1).
The related two user options are ‘company-icon-size’ and
‘company-icon-margin’.
[image src="./images/small/tooltip-icons-vscode.png"]
-- Function: company-text-icons-margin
This function produces letters and symbols formatted according to
the ‘company-text-icons-format’. The rest of the user options
affecting this function behavior are listed below.
[image src="./images/small/tooltip-icons-text.png"]
-- Function: company-dot-icons-margin
This function produces a colored Unicode symbol of a circle
formatted according to the ‘company-dot-icons-format’. Other user
options that affect the resulting output are listed below.
[image src="./images/small/tooltip-icons-dot.png"]
The following user options influence appearance of the _text_ and _dot_
_icons_.
-- User Option: company-text-icons-mapping
Lists candidates’ _kinds_ with their corresponding _icons_
configurations.
-- User Option: company-text-face-extra-attributes
A list of face attributes to be applied to the _icons_.
(setq company-text-face-extra-attributes
'(:weight bold :slant italic))
[image src="./images/small/tooltip-icon-face.png"]
-- User Option: company-text-icons-add-background
If this option is enabled, when an _icon_ doesn’t have a background
configured by ‘company-text-icons-mapping’, then a generated
background is applied.
(setq company-text-icons-add-background t)
[image src="./images/small/tooltip-icon-bg.png"]
-- Function: company-detect-icons-margin
This is the default margin formatting function, that applies one of
the ‘company-vscode-*-icons-margin’ functions if ‘vscode’ icons set
is supported; otherwise applies a ‘company-text-icons-margin’
function.
Faces
-----
Out-of-the-box Company defines and configures distinguished faces (*note
(emacs)Faces::) for light and dark themes. Moreover, some of the
built-in and third-party themes fine-tune Company to fit their palettes.
That is why there’s often no real need to make such adjustments on the
user’s side. However, this chapter presents some hints on where to
start customizing Company interface.
Namely, the look of a tooltip is controlled by the ‘company-tooltip*’
named faces.
The following example suggests how users may approach tooltip faces
customization:
(custom-set-faces
'(company-tooltip
((t (:background "ivory" :foreground "MistyRose3"))))
'(company-tooltip-selection
((t (:background "LemonChiffon1" :foreground "MistyRose4"))))
'(company-tooltip-common ((t (:weight bold :foreground "pink1"))))
'(company-scrollbar-fg ((t (:background "ivory3"))))
'(company-scrollbar-bg ((t (:background "ivory2"))))
'(company-tooltip-annotation ((t (:foreground "MistyRose2")))))
[image src="./images/small/tooltip-faces-light.png"]
---------- Footnotes ----------
(1) SVG images support has to be enabled in Emacs for these icons set
to be used. The supported images types can be checked with ‘C-h v
image-types’. Before compiling Emacs, make sure ‘librsvg’ is installed
on your system.

File: company.info, Node: Preview Frontends, Next: Echo Frontends, Prev: Tooltip Frontends, Up: Frontends
4.2 Preview Frontends
=====================
Frontends in this group output a completion candidate or a common part
of the candidates temporarily inline, as if the word had already been
completed (1).
-- Function: company-preview-if-just-one-frontend
This is one of the frontends enabled by default. This frontend
outputs a preview if only one completion candidate is available; it
is a good suit to be combined with
‘company-pseudo-tooltip-unless-just-one-frontend’, *note Tooltip
Frontends::.
-- Function: company-preview-frontend
This frontend outputs the first of the available completion
candidates inline for a preview.
-- Function: company-preview-common-frontend
As the name of this frontend suggests, it outputs for a preview
only a common part of the candidates.
The look of the preview is controlled by the following faces:
‘company-preview’, ‘company-preview-common’, and
‘company-preview-search’.
[image src="./images/small/preview-light.png"]
[image src="./images/small/preview-dark.png"]
---------- Footnotes ----------
(1) The candidates retrieved according to ‘non-prefix’ matches (*note
Terminology::) may be shown in full after point.

File: company.info, Node: Echo Frontends, Next: Candidates Search, Prev: Preview Frontends, Up: Frontends
4.3 Echo Frontends
==================
The frontends listed in this section display information in the Emacs’s
echo area, *note (emacs)Echo Area::.
-- Function: company-echo-metadata-frontend
This frontend is a part of the predefined frontends set. Its
responsibility is to output a short documentation string for a
completion candidate in the echo area.
[image src="./images/small/echo-meta.png"]
The last pair of the built-in frontends isn’t that commonly used and not
as full-featured as the previously reviewed _tooltip-_ and _preview-_
frontends, but still, feel free to play with them and have some fun!
-- Function: company-echo-frontend
This frontend outputs all the available completion candidates in
the echo area.
[image src="./images/small/echo.png"]
-- Function: company-echo-strip-common-frontend
It acts similarly to the previous frontend but outputs a common
part of the candidates once for all of them.
[image src="./images/small/echo-strip.png"]
-- User Option: company-echo-truncate-lines
This is the only _echo frontends_ targeted setting. When enabled,
the output is truncated to fit the echo area. This setting is set
to ‘t’ by default.
To apply visual changes to the output of these frontends, configure the
faces ‘company-echo’ and ‘company-echo-common’.

File: company.info, Node: Candidates Search, Next: Filter Candidates, Prev: Echo Frontends, Up: Frontends
4.4 Candidates Search
=====================
By default, when _company-mode_ is in action, a key binding ‘C-s’ starts
looking for matches to additionally typed characters among the displayed
candidates. When a search is initiated, an indicator
‘Search: CHARACTERS’ is shown in the Emacs’s mode line.
To quit the search mode, hit ‘C-g’.
-- User Option: company-search-regexp-function
The value of this user option must be a function that interprets
the search input. By default it is set to the function
‘regexp-quote’, with looks for an exact match. Company defines
several more functions suitable for this option. They are listed
below.
-- Function: company-search-words-regexp
Searches for words separated with spaces in the given order.
-- Function: company-search-words-in-any-order-regexp
Searches for words separated with spaces in any order.
-- Function: company-search-flex-regexp
Searches for characters in the given order, with anything in
between.
Search matches are distinguished by the ‘company-tooltip-search’ and
‘company-tooltip-search-selection’ faces.
[image src="./images/small/tooltip-search.png"]

File: company.info, Node: Filter Candidates, Next: Quick Access a Candidate, Prev: Candidates Search, Up: Frontends
4.5 Filter Candidates
=====================
Candidates filtering is started by typing the default key binding
‘C-M-s’. Filtering acts on a par with the search (*note Candidates
Search::), indicating its activation by the text ‘Filter: CHARACTERS’ in
the mode line and influencing the displayed candidates. The difference
is that the filtering, as its name suggests, keeps displaying only the
matching candidates (in addition to distinguishing the matches with a
face).
To quit the filtering, hit ‘C-g’. To toggle between search and filter
states, use key binding ‘C-o’.
[image src="./images/small/tooltip-filter.png"]

File: company.info, Node: Quick Access a Candidate, Prev: Filter Candidates, Up: Frontends
4.6 Quick Access a Candidate
============================
Company provides a way to choose a candidate for completion without
having to navigate to that candidate: by hitting one of the quick-access
keys. By default, quick-access key bindings utilize a modifier <META>
and one of the digits, such that pressing ‘M-1’ completes with the first
candidate on the list and ‘M-0’ with the tenth candidate.
If ‘company-show-quick-access’ is enabled, _tooltip-_ and _echo-_
frontends show quick-access hints.
(setq company-show-quick-access 'left)
[image src="./images/small/tooltip-quick-access.png"]
[image src="./images/small/echo-qa.png"]
[image src="./images/small/echo-strip-qa.png"]
To customize the key bindings, either do it via Customization Interface
(*note Customization Interface::) or use the following approach:
(custom-set-variables
'(company-quick-access-keys '("a" "o" "e" "u" "i"))
'(company-quick-access-modifier 'super))
A modifier should be one of ‘meta’, ‘super’, ‘hyper’, ‘ control’.
The following example applies a bit of customization and demonstrates
how to change quick-access hints faces.
(setq company-show-quick-access t)
(custom-set-faces
'(company-tooltip-quick-access ((t (:foreground "pink1"))))
'(company-tooltip-quick-access-selection
((t (:foreground "pink1" :slant italic)))))
[image src="./images/small/tooltip-qa-faces-light.png"]

File: company.info, Node: Backends, Next: Troubleshooting, Prev: Frontends, Up: Top
5 Backends
**********
We can metaphorically say that each backend is like an engine. (The
reality is even better since backends are just functions.) Firing such
an engine with a command causes the production of material for Company
to work on. Typically, that means showing that output to the user via
one or several configured frontends, *note Frontends::.
Just like Company provides a preconfigured list of the enabled
frontends, it also defines a list of the backends to rely on by default.
This list is stored in the user option ‘company-backends’. The
docstring of this variable has the full description of what a backend is
and how to implement one. So we suggest reading the output of ‘C-h v
company-backends’ for more details. Nevertheless, the fundamental
concepts are described in this user manual too.
* Menu:
* Backends Usage Basics::
* Grouped Backends::
* Package Backends::
* Candidates Post-Processing::

File: company.info, Node: Backends Usage Basics, Next: Grouped Backends, Up: Backends
5.1 Backends Usage Basics
=========================
One of the significant concepts to understand about Company is that the
package relies on one backend at a time (1). The backends are invoked
one by one, in the sequential order of the items on the
‘company-backends’ list. The first one that reports itself applicable
in the current context (usually based on the value of ‘major-mode’ and
the text around point), is used for completion.
The name of the currently active backend is shown in the mode line and
in the output of the command ‘M-x company-diag’.
In most cases (mainly to exclude false-positive results), if the current
applicable backend returned no completions, the ones after it in the
list are not invoked. If you do want to query the next one, use the
command ‘company-other-backend’: either by calling it with ‘M-x’ or by
binding the command to the keys of your choice, like:
(global-set-key (kbd "C-c C-/") #'company-other-backend)
It is also possible to specifically start a backend with the command
‘M-x company-begin-backend’ or by calling a backend by its name, for
instance: ‘M-x company-capf’. As usual for Emacs, such backends calls
can be assigned to key bindings, for example:
(global-set-key (kbd "C-c y") 'company-yasnippet)
---------- Footnotes ----------
(1) The grouped backends act as one complex backend. *Note Grouped
Backends::.

File: company.info, Node: Grouped Backends, Next: Package Backends, Prev: Backends Usage Basics, Up: Backends
5.2 Grouped Backends
====================
In many cases, it can be desirable to receive candidates from several
backends simultaneously. This can be achieved by configuring “grouped
backends”: a sub-list of backends in the ‘company-backends’ list, that
is handled specifically by Company.
The most important part of this handling is the merge of the completion
candidates from the grouped backends.
To keep the candidates organized in accordance with the grouped backends
order, add the keyword ‘:separate’ to the list of the grouped backends.
The following example illustrates this.
(defun my-text-mode-hook ()
(setq-local company-backends
'((company-dabbrev company-ispell :separate)
company-files)))
(add-hook 'text-mode-hook #'my-text-mode-hook)
Another keyword ‘:with’ helps to make sure the results from major/minor
mode agnostic backends (such as _company-yasnippet_,
_company-dabbrev-code_) are returned without preventing results from
context-aware backends (such as _company-capf_ or _company-clang_). For
this feature to work, put backends dependent on a mode at the beginning
of the grouped backends list, then put a keyword ‘:with’, and only then
put context agnostic backend(s), as shown in the following concise
example:
(setq company-backends '((company-capf :with company-yasnippet)))

File: company.info, Node: Package Backends, Next: Candidates Post-Processing, Prev: Grouped Backends, Up: Backends
5.3 Package Backends
====================
The following sections give a short overview of the commonly used
backends bundled with Company. Each section is devoted to one of the
roughly outlined groups of the backends.
Some of the backends expose user options for customization; a few of
these options are introduced below. For those who would like to fetch
the full list of a backend’s user options, we suggest doing one of the
following:
• Execute command ‘M-x customize-group <RET> <backend-name>’.
• Open the source file of the backend and run
‘M-x occur <RET> ^(defcustom’.
− Optionally, search for the matches with
‘M-x isearch <RET> (defcustom’.
* Menu:
* Code Completion::
* Text Completion::
* File Name Completion::
* Template Expansion::

File: company.info, Node: Code Completion, Next: Text Completion, Up: Package Backends
5.3.1 Code Completion
---------------------
-- Function: company-capf
The current trend in the Emacs’s world is to delegate completion
logic to the hook ‘completion-at-point-functions’ (CAPF) assigned
to by the major or minor modes. It supports a common subset of
features which is well-supported across different completion UIs.
[Among other things, this is what the most popular Emacs clients
for the language server protocol (LSP) also rely on.]
For that reason, it is probably the most used and recommended
backend nowadays, including for Emacs Lisp coding.
Just to illustrate, the following minimal backends setup
(setq company-backends '((company-capf company-dabbrev-code)))
might cover a large number of basic use cases, especially so in
major modes that have CAPF support implemented.
For more details on CAPF, *note (elisp)Completion in Buffers::.
-- User Option: company-capf-disabled-functions
List of completion functions which should be ignored by this
backend. By default it contains the functions that duplicate the
built-in backends but don’t support the corresponding configuration
options and/or alter the intended priority of the default backends’
configuration.
-- Function: company-dabbrev-code
This backend works similarly to the built-in Emacs package
_dabbrev_, searching for completion candidates inside the contents
of the open buffer(s). Internally, it reuses code from the other
backend, ‘company-dabbrev’ (*note Text Completion::).
-- User Option: company-dabbrev-code-modes
This variable lists the modes that use ‘company-dabbrev-code’. The
backend will only perform completion in these major modes and their
derivatives. Otherwise it passes control to other backends. Value
t means complete in all modes.
-- User Option: company-dabbrev-code-other-buffers
This variable determined whether ‘company-dabbrev-code’ will search
other buffers for completions. If ‘all’, it will search all other
buffers except the ignored ones (names starting with a space). If
‘t’, it will search buffers with the same major mode. If ‘code’,
it will search buffers with major modes in
‘company-dabbrev-code-modes’ or derived from one of them. This can
also be a function that takes the current buffer as parameter and
returns a list of major modes to search.
-- User Option: company-dabbrev-code-everywhere
This is a boolean option which determines whether this backend will
perform completion in strings and comments as well. The default
value ‘nil’ means it will pass on control to other backends in such
contexts.
-- User Option: company-dabbrev-code-completion-styles
Non-nil to use ‘completion-styles’ for matching completions in this
backend. It can be set to ‘t’ to use the global value of
‘completion-styles’, or to a list of symbols to use specific
completion styles with this backend. The default value is nil.
-- Function: company-keywords
This backend provides completions for many of the widely spread
programming languages _keywords_: words bearing specific meaning in
a language.
-- Function: company-clang
As the name suggests, use this backend to get completions from
_Clang_ compiler; that is, for the languages in the _C_ language
family: _C_, _C++_, _Objective-C_. It uses the command-line
interface of the program ‘clang’, but without any advanced caching
across calls, or automatic detection of the project structure.
Which makes it more suitable for small to medium projects,
especially if you’re willing to customize
‘company-clang-arguments’. Otherwise we recommend using one of the
LSP clients available for Emacs, together with the backend
‘company-capf’.
-- User Option: company-clang-arguments
This option can be set to a list of strings which will be passed to
_clang_ during completion. These can include elements like ‘"-I"
"path/to/includes/dir"’ to indicate the header directories and
other compiler options.
-- Function: company-semantic
This backend relies on a built-in Emacs package that provides
language-aware editing commands based on source code parsers, *note
(emacs)Semantic::. Having enabled _semantic-mode_ makes it to be
used by the CAPF mechanism (*note (emacs)Symbol Completion::),
hence the user may consider enabling _company-capf_ backend
instead.
-- Function: company-etags
This backend uses tags tables as produced by the built-in Emacs
program _etags_, *note (emacs)Tags Tables::.
-- User Option: company-etags-ignore-case
Non-nil to ignore case in this backend’s completions.
-- User Option: company-etags-everywhere
Non-nil to offer completions in comments and strings. It can also
be set to ‘t’ or a list of major modes in which this would happen.
-- User Option: company-etags-completion-styles
Non-nil to use ‘completion-styles’ for matching completions in this
backend. It can be set to ‘t’ to use the global value of
‘completion-styles’, or to a list of symbols to use specific
completion styles with this backend. The default value is nil.

File: company.info, Node: Text Completion, Next: File Name Completion, Prev: Code Completion, Up: Package Backends
5.3.2 Text Completion
---------------------
-- Function: company-dabbrev
This backend works similarly to the built-in Emacs package
_dabbrev_, searching for completion candidates inside the contents
of the open buffer(s). It is one of the often used backends, and
it has several interesting options for configuration. Let’s review
a few of them.
-- User Option: company-dabbrev-minimum-length
This option sets the minimum length of a completion candidate
to collect from the text. The default value of ‘4’ is
intended to prevent potential performance issues. But in many
scenarios, it may be acceptable to lower this value. Note
that this option also affects the behavior of the
_company-dabbrev-code_ backend.
(setq company-dabbrev-minimum-length 2)
-- User Option: company-dabbrev-other-buffers
By default, _company-dabbrev_ collects completion candidates
from all not ignored buffers (see more on that below). This
behavior can be changed to collecting candidates from the
current buffer only (by setting the value to ‘nil’) or from
the buffers with the same major mode:
(setq company-dabbrev-other-buffers t)
-- User Option: company-dabbrev-ignore-buffers
The value of this option should be a regexp or a predicate
function that can be used to match a buffer name. The matched
buffers are omitted from the search for completion candidates.
The last two options described here relate to handling uppercase
and lowercase letters in completion candidates. The illustrative
examples given below can be reproduced in the ‘*scratch*’ buffer,
with the word ‘Enjoy’ typed in, and with this initial setup:
(setq-local company-backends '(company-dabbrev)
company-dabbrev-other-buffers nil
company-dabbrev-ignore-case nil
company-dabbrev-downcase nil)
-- User Option: company-dabbrev-ignore-case
This user option controls whether the case is ignored when
collecting completion candidates. When the option is set to
‘nil’, ‘Enjoy’ is suggested as a completion candidate for the
typed ‘Enj’ letters, but not for ‘enj’. When the option is
set to ‘t’, ‘Enjoy’ is suggested as a candidate for both ‘Enj’
and ‘enj’ input; note that ‘enj’ prefix is “overwritten” by
completing with the ‘Enjoy’ candidate. The third, default,
type of behavior solves this issue, keeping the case of the
typed prefix (and still collecting candidates
case-insensitively):
(setq company-dabbrev-ignore-case 'keep-prefix)
Now we can type ‘enj’, complete it with the suggested ‘Enjoy’,
and _enjoy_ the result.
-- User Option: company-dabbrev-downcase
This user option controls whether completion candidates are
down-cased before their display. When the option is set to
‘nil’, no transformation is performed; in the environment
described above, typing ‘Enj’ results in the candidate ‘Enjoy’
being suggested. When the option is set to ‘t’, the
down-cased candidate ‘enjoy’ is suggested. By default, this
option is set to ‘case-replace’, meaning taking a value of the
Emacs’s variable ‘case-replace’ (‘t’ is the current default).
-- Function: company-ispell
This backend returns completion candidates collected by _Ispell_, a
built-in Emacs package that performs spell-checking. *Note
Checking and Correcting Spelling: (emacs)Spelling. Note that
_Ispell_ uses only one dictionary at a time (combining several
dictionaries into one file is an accepted practice). By default,
_company-ispell_ suggests candidates from a dictionary specified by
the Emacs’s setting ‘ispell-complete-word-dict’.
-- User Option: company-ispell-dictionary
Optionally, set a file path for _company-ispell_ to use
another dictionary.

File: company.info, Node: File Name Completion, Next: Template Expansion, Prev: Text Completion, Up: Package Backends
5.3.3 File Name Completion
--------------------------
-- Function: company-files
This backend can be used to retrieve completion candidates for the
absolute and relative paths in the directory structure of an
operating system. The behavior of the _company-files_ backend can
be adjusted with the two user options.
-- User Option: company-files-exclusions
It may be desirable to exclude directories or files from the
list of suggested completion candidates. For example,
someone’s setup might look this way:
(setq company-files-exclusions '(".git/" ".DS_Store"))
-- User Option: company-files-chop-trailing-slash
This setting is enabled by default, which results in stripping
off a trailing slash from an inserted directory name. On
typing a trailing slash, the process of completion gets
started again, from inside the just inserted directory.
Setting ‘company-files-chop-trailing-slash’ to ‘nil’ makes
directory names to be inserted as is, with a trailing slash.
In this case, the completion process can be continued, for
example, either by explicitly calling _company-files_ backend
(*note Backends Usage Basics::) or by starting typing a name
of a file/directory known to be located under the inserted
directory.

File: company.info, Node: Template Expansion, Prev: File Name Completion, Up: Package Backends
5.3.4 Template Expansion
------------------------
-- Function: company-abbrev
This is a completion backend for a built-in word abbreviation mode
(*note (emacs)Abbrevs::), that allows completing abbreviations with
their expansions.
-- Function: company-tempo
A backend for users of Tempo
(https://www.lysator.liu.se/~davidk/elisp/), one more built-in
Emacs package for creating and inserting (expanding) templates.
-- Function: company-yasnippet
Used as a completion backend for the popular third-party template
system YASnippet (https://github.com/joaotavora/yasnippet).

File: company.info, Node: Candidates Post-Processing, Prev: Package Backends, Up: Backends
5.4 Candidates Post-Processing
==============================
A list of completion candidates supplied by backends can be manipulated
before output: reorganized, reduced, sorted, etc. To apply adjustments,
add a processing function name to the user option ‘company-transformers’
list.
The transformer functions are called in a sequence, each with the return
value of the previous one. The first function receives a sorted list of
distinct completion candidates. Note that the default sorting behavior
may be overridden by backends and influenced by the use of the keyword
‘:separate’ in the grouped backends list (*note Grouped Backends::).
Since Company does not treat candidates with differing annotations as
duplicates, it may sometimes be desirable to condense completion lists
containing such entries. In the example below, post-processing begins
with their removal. Then, the weighted ordering of the candidates is
performed.
;; Set grouped backends.
(setq company-backends '((company-capf company-dabbrev-code)))
;; Apply post-processing.
(setq company-transformers '(delete-consecutive-dups
company-sort-by-occurrence))
If a grouped backend contains the keyword ‘:separate’, you can use the
‘delete-dups’ function instead.
;; Set grouped backends.
(setq company-backends
'((:separate company-capf company-dabbrev-code)))
;; Apply post-processing.
(setq company-transformers '(delete-dups
company-sort-by-occurrence))
Company is bundled with several transformer functions.
-- Function: company-sort-by-occurrence
Sorts candidates using ‘company-occurrence-weight-function’
algorithm.
-- User Option: company-occurrence-weight-function
Can be set to one of ‘company-occurrence-prefer-closest-above’
(default) or ‘company-occurrence-prefer-any-closest’. This user
option defines the behavior of the ‘company-sort-by-occurrence’
transformer function.
-- Function: company-sort-by-backend-importance
Sorts candidates as two priority groups, differentiated by the
keyword ‘:with’ (*note Grouped Backends::). Backends positioned in
the backends list before the keyword ‘:with’ are treated as more
important.
-- Function: company-sort-prefer-same-case-prefix
Gives preference to the candidates that match the prefix
case-insensitively.

File: company.info, Node: Troubleshooting, Next: Index, Prev: Backends, Up: Top
6 Troubleshooting
*****************
If something goes wrong, the first thing we recommend doing is to
execute command ‘M-x company-diag’ and thoroughly study its output.
This command outputs important details about the internal workings of
Company at the moment of the ‘company-diag’ command execution, including
a responsible backend and a list of completion candidates provided by
it.
Based on the value of the ‘Used backend’ in the output of the command
‘M-x company-diag’, these possible actions may follow:
• If the used backend does not belong to the Company package, report
the issue to the corresponding third-party package maintainer(s).
• If the used backend is ‘company-capf’, then take a look at the line
starting with ‘Value of c-a-p-f:’. The issue could have been
caused by a function listed there. To identify to which package it
belongs, type ‘M-x find-function <RET> <function-name> <RET>’.
If the aforementioned steps didn’t help to find the cause of the issue,
then file a bug report to
the Company Issue Tracker (https://github.com/company-mode/company-mode/issues),
attaching the following information:
1. Output of the ‘M-x company-diag’.
2. The exact error message: you can find it in the ‘*Messages*’
buffer.
3. The steps to reproduce the behavior. Ideally, if you can, starting
with a bare Emacs session: ‘emacs -Q’.
4. The backtrace of the error, which you can get by running the
command: ‘M-x toggle-debug-on-error’ before reproducing the error.

File: company.info, Node: Index, Prev: Troubleshooting, Up: Top
Index
*****
* Menu:
* Key Index::
* Variable Index::
* Function Index::
* Concept Index::

File: company.info, Node: Key Index, Next: Variable Index, Up: Index
Key Index
=========
[index]
* Menu:
* C-g: Usage Basics. (line 23)
* C-g <1>: Commands. (line 34)
* C-g <2>: Candidates Search. (line 11)
* C-g <3>: Filter Candidates. (line 14)
* C-h: Commands. (line 38)
* C-M-s: Filter Candidates. (line 6)
* C-n: Usage Basics. (line 12)
* C-n <1>: Commands. (line 11)
* C-o: Filter Candidates. (line 14)
* C-p: Usage Basics. (line 12)
* C-p <1>: Commands. (line 16)
* C-s: Candidates Search. (line 6)
* C-w: Commands. (line 45)
* M-<digit>: Quick Access a Candidate.
(line 6)
* RET: Usage Basics. (line 15)
* RET <1>: Commands. (line 21)
* TAB: Usage Basics. (line 17)
* TAB <1>: Commands. (line 26)

File: company.info, Node: Variable Index, Next: Function Index, Prev: Key Index, Up: Index
Variable Index
==============
[index]
* Menu:
* company-after-completion-hook: Configuration File. (line 98)
* company-backends: Backends. (line 12)
* company-backends <1>: Backends Usage Basics.
(line 6)
* company-backends <2>: Grouped Backends. (line 6)
* company-capf-disabled-functions: Code Completion. (line 26)
* company-clang-arguments: Code Completion. (line 84)
* company-completion-cancelled-hook: Configuration File. (line 94)
* company-completion-finished-hook: Configuration File. (line 96)
* company-completion-started-hook: Configuration File. (line 92)
* company-dabbrev-code-completion-styles: Code Completion. (line 61)
* company-dabbrev-code-everywhere: Code Completion. (line 55)
* company-dabbrev-code-modes: Code Completion. (line 39)
* company-dabbrev-code-other-buffers: Code Completion. (line 45)
* company-dabbrev-downcase: Text Completion. (line 64)
* company-dabbrev-ignore-buffers: Text Completion. (line 32)
* company-dabbrev-ignore-case: Text Completion. (line 47)
* company-dabbrev-minimum-length: Text Completion. (line 13)
* company-dabbrev-other-buffers: Text Completion. (line 23)
* company-dot-icons-format: Tooltip Frontends. (line 183)
* company-echo-truncate-lines: Echo Frontends. (line 33)
* company-etags-completion-styles: Code Completion. (line 109)
* company-etags-everywhere: Code Completion. (line 105)
* company-etags-ignore-case: Code Completion. (line 102)
* company-files-chop-trailing-slash: File Name Completion.
(line 19)
* company-files-exclusions: File Name Completion.
(line 12)
* company-format-margin-function: Tooltip Frontends. (line 158)
* company-frontends: Frontends. (line 6)
* company-global-modes: Configuration File. (line 35)
* company-icon-margin: Tooltip Frontends. (line 169)
* company-icon-size: Tooltip Frontends. (line 169)
* company-idle-delay: Configuration File. (line 17)
* company-inhibit-inside-symbols: Configuration File. (line 31)
* company-insertion-on-trigger: Configuration File. (line 68)
* company-insertion-triggers: Configuration File. (line 76)
* company-ispell-dictionary: Text Completion. (line 84)
* company-lighter-base: Configuration File. (line 63)
* company-minimum-prefix-length: Configuration File. (line 9)
* company-mode: Initial Setup. (line 6)
* company-occurrence-weight-function: Candidates Post-Processing.
(line 47)
* company-require-match: Configuration File. (line 55)
* company-search-regexp-function: Candidates Search. (line 13)
* company-selection-wrap-around: Configuration File. (line 47)
* company-show-quick-access: Quick Access a Candidate.
(line 12)
* company-text-face-extra-attributes: Tooltip Frontends. (line 196)
* company-text-icons-add-background: Tooltip Frontends. (line 204)
* company-text-icons-format: Tooltip Frontends. (line 176)
* company-text-icons-mapping: Tooltip Frontends. (line 192)
* company-tooltip-align-annotations: Tooltip Frontends. (line 51)
* company-tooltip-annotation-padding: Tooltip Frontends. (line 63)
* company-tooltip-flip-when-above: Tooltip Frontends. (line 106)
* company-tooltip-idle-delay: Tooltip Frontends. (line 21)
* company-tooltip-limit: Tooltip Frontends. (line 71)
* company-tooltip-margin: Tooltip Frontends. (line 139)
* company-tooltip-maximum-width: Tooltip Frontends. (line 132)
* company-tooltip-minimum: Tooltip Frontends. (line 91)
* company-tooltip-minimum-width: Tooltip Frontends. (line 117)
* company-tooltip-offset-display: Tooltip Frontends. (line 81)
* company-tooltip-width-grow-only: Tooltip Frontends. (line 127)
* company-transformers: Candidates Post-Processing.
(line 6)

File: company.info, Node: Function Index, Next: Concept Index, Prev: Variable Index, Up: Index
Function Index
==============
[index]
* Menu:
* company-abbrev: Template Expansion. (line 6)
* company-abort: Commands. (line 34)
* company-begin-backend: Backends Usage Basics.
(line 24)
* company-capf: Code Completion. (line 6)
* company-clang: Code Completion. (line 72)
* company-complete: Usage Basics. (line 10)
* company-complete <1>: Commands. (line 51)
* company-complete-common: Commands. (line 51)
* company-complete-common-or-cycle: Commands. (line 26)
* company-complete-selection: Commands. (line 21)
* company-dabbrev: Text Completion. (line 6)
* company-dabbrev-code: Code Completion. (line 33)
* company-detect-icons-margin: Tooltip Frontends. (line 213)
* company-diag: Backends Usage Basics.
(line 13)
* company-diag <1>: Troubleshooting. (line 6)
* company-dot-icons-margin: Tooltip Frontends. (line 182)
* company-echo-frontend: Echo Frontends. (line 21)
* company-echo-metadata-frontend: Echo Frontends. (line 9)
* company-echo-strip-common-frontend: Echo Frontends. (line 27)
* company-etags: Code Completion. (line 98)
* company-files: File Name Completion.
(line 6)
* company-indent-or-complete-common: Commands. (line 51)
* company-ispell: Text Completion. (line 75)
* company-keywords: Code Completion. (line 67)
* company-mode: Initial Setup. (line 6)
* company-other-backend: Backends Usage Basics.
(line 16)
* company-preview-common-frontend: Preview Frontends. (line 21)
* company-preview-frontend: Preview Frontends. (line 17)
* company-preview-if-just-one-frontend: Preview Frontends. (line 10)
* company-pseudo-tooltip-frontend: Tooltip Frontends. (line 16)
* company-pseudo-tooltip-unless-just-one-frontend: Tooltip Frontends.
(line 10)
* company-pseudo-tooltip-unless-just-one-frontend-with-delay: Tooltip Frontends.
(line 20)
* company-search-flex-regexp: Candidates Search. (line 26)
* company-search-words-in-any-order-regexp: Candidates Search.
(line 23)
* company-search-words-regexp: Candidates Search. (line 20)
* company-select-next: Commands. (line 11)
* company-select-next-or-abort: Commands. (line 11)
* company-select-previous: Commands. (line 16)
* company-select-previous-or-abort: Commands. (line 16)
* company-semantic: Code Completion. (line 90)
* company-show-doc-buffer: Commands. (line 38)
* company-show-location: Commands. (line 45)
* company-sort-by-backend-importance: Candidates Post-Processing.
(line 53)
* company-sort-by-occurrence: Candidates Post-Processing.
(line 43)
* company-sort-prefer-same-case-prefix: Candidates Post-Processing.
(line 59)
* company-tempo: Template Expansion. (line 11)
* company-text-icons-margin: Tooltip Frontends. (line 175)
* company-tng-frontend: Structure. (line 26)
* company-tng-mode: Structure. (line 26)
* company-vscode-dark-icons-margin: Tooltip Frontends. (line 167)
* company-vscode-light-icons-margin: Tooltip Frontends. (line 168)
* company-yasnippet: Template Expansion. (line 16)
* global-company-mode: Initial Setup. (line 18)

File: company.info, Node: Concept Index, Prev: Function Index, Up: Index
Concept Index
=============
[index]
* Menu:
* :separate: Grouped Backends. (line 14)
* :separate <1>: Candidates Post-Processing.
(line 11)
* :separate <2>: Candidates Post-Processing.
(line 30)
* :with: Grouped Backends. (line 25)
* abbrev: Template Expansion. (line 6)
* abort: Usage Basics. (line 23)
* abort <1>: Commands. (line 34)
* activate: Initial Setup. (line 8)
* active backend: Backends Usage Basics.
(line 13)
* active backend <1>: Troubleshooting. (line 14)
* annotation: Tooltip Frontends. (line 52)
* annotation <1>: Candidates Post-Processing.
(line 17)
* auto-start: Initial Setup. (line 13)
* backend: Structure. (line 6)
* backend <1>: Structure. (line 10)
* backend <2>: Backends Usage Basics.
(line 13)
* backend <3>: Backends Usage Basics.
(line 16)
* backend <4>: Troubleshooting. (line 14)
* backends: Backends. (line 6)
* backends <1>: Backends Usage Basics.
(line 6)
* backends <2>: Grouped Backends. (line 6)
* backends <3>: Package Backends. (line 6)
* backends <4>: Candidates Post-Processing.
(line 11)
* basics: Usage Basics. (line 6)
* bug: Troubleshooting. (line 6)
* bug <1>: Troubleshooting. (line 25)
* bundled backends: Package Backends. (line 6)
* cancel: Usage Basics. (line 23)
* cancel <1>: Commands. (line 34)
* candidate: Terminology. (line 10)
* candidate <1>: Usage Basics. (line 12)
* candidate <2>: Usage Basics. (line 15)
* candidate <3>: Preview Frontends. (line 6)
* color: Tooltip Frontends. (line 222)
* color <1>: Quick Access a Candidate.
(line 34)
* common part: Usage Basics. (line 17)
* common part <1>: Commands. (line 26)
* common part <2>: Preview Frontends. (line 6)
* company-echo: Echo Frontends. (line 6)
* company-preview: Preview Frontends. (line 6)
* company-tng: Structure. (line 26)
* company-tooltip: Tooltip Frontends. (line 222)
* company-tooltip-search: Candidates Search. (line 6)
* complete: Terminology. (line 6)
* complete <1>: Usage Basics. (line 12)
* complete <2>: Usage Basics. (line 15)
* complete <3>: Usage Basics. (line 17)
* complete <4>: Commands. (line 21)
* complete <5>: Preview Frontends. (line 6)
* completion: Terminology. (line 6)
* completion <1>: Usage Basics. (line 12)
* completion <2>: Usage Basics. (line 15)
* completion <3>: Usage Basics. (line 17)
* configure: Customization. (line 6)
* configure <1>: Customization Interface.
(line 6)
* configure <2>: Configuration File. (line 6)
* configure <3>: Tooltip Frontends. (line 48)
* configure <4>: Tooltip Frontends. (line 222)
* configure <5>: Preview Frontends. (line 25)
* configure <6>: Echo Frontends. (line 38)
* configure <7>: Candidates Search. (line 30)
* configure <8>: Quick Access a Candidate.
(line 25)
* configure <9>: Quick Access a Candidate.
(line 34)
* custom: Customization. (line 6)
* custom <1>: Customization Interface.
(line 6)
* custom <2>: Configuration File. (line 6)
* custom <3>: Tooltip Frontends. (line 48)
* custom <4>: Tooltip Frontends. (line 222)
* custom <5>: Preview Frontends. (line 25)
* custom <6>: Echo Frontends. (line 38)
* custom <7>: Candidates Search. (line 30)
* custom <8>: Quick Access a Candidate.
(line 25)
* custom <9>: Quick Access a Candidate.
(line 34)
* definition: Commands. (line 45)
* distribution: Installation. (line 6)
* doc: Commands. (line 38)
* duplicates: Candidates Post-Processing.
(line 17)
* duplicates <1>: Candidates Post-Processing.
(line 30)
* echo: Echo Frontends. (line 6)
* enable: Initial Setup. (line 8)
* error: Troubleshooting. (line 6)
* error <1>: Troubleshooting. (line 25)
* expansion: Template Expansion. (line 6)
* extensible: Structure. (line 6)
* face: Tooltip Frontends. (line 222)
* face <1>: Preview Frontends. (line 6)
* face <2>: Preview Frontends. (line 25)
* face <3>: Echo Frontends. (line 6)
* face <4>: Echo Frontends. (line 38)
* face <5>: Candidates Search. (line 6)
* face <6>: Candidates Search. (line 30)
* face <7>: Filter Candidates. (line 6)
* face <8>: Quick Access a Candidate.
(line 34)
* filter: Filter Candidates. (line 6)
* finish: Usage Basics. (line 23)
* finish <1>: Commands. (line 34)
* font: Tooltip Frontends. (line 222)
* font <1>: Quick Access a Candidate.
(line 34)
* frontend: Structure. (line 6)
* frontend <1>: Structure. (line 10)
* frontends: Frontends. (line 6)
* grouped backends: Grouped Backends. (line 6)
* grouped backends <1>: Candidates Post-Processing.
(line 11)
* icon: Tooltip Frontends. (line 151)
* install: Installation. (line 6)
* interface: Tooltip Frontends. (line 48)
* interface <1>: Tooltip Frontends. (line 222)
* interface <2>: Preview Frontends. (line 25)
* interface <3>: Echo Frontends. (line 38)
* interface <4>: Candidates Search. (line 30)
* interface <5>: Quick Access a Candidate.
(line 34)
* intro: Initial Setup. (line 6)
* issue: Troubleshooting. (line 6)
* issue tracker: Troubleshooting. (line 25)
* kind: Tooltip Frontends. (line 151)
* location: Commands. (line 45)
* manual: Initial Setup. (line 8)
* manual <1>: Usage Basics. (line 10)
* margin: Tooltip Frontends. (line 140)
* margin <1>: Tooltip Frontends. (line 159)
* minor-mode: Initial Setup. (line 6)
* module: Structure. (line 6)
* module <1>: Structure. (line 10)
* navigate: Usage Basics. (line 12)
* next backend: Backends Usage Basics.
(line 16)
* non-prefix matches: Terminology. (line 10)
* package: Installation. (line 6)
* package backends: Package Backends. (line 6)
* pluggable: Structure. (line 6)
* pop-up: Tooltip Frontends. (line 6)
* post-processing: Candidates Post-Processing.
(line 6)
* prefix matches: Terminology. (line 10)
* preview: Preview Frontends. (line 6)
* quick start: Initial Setup. (line 6)
* quick-access: Quick Access a Candidate.
(line 6)
* quit: Usage Basics. (line 23)
* quit <1>: Commands. (line 34)
* search: Candidates Search. (line 6)
* select: Usage Basics. (line 12)
* select <1>: Commands. (line 11)
* select <2>: Commands. (line 16)
* snippet: Template Expansion. (line 6)
* sort: Candidates Post-Processing.
(line 6)
* stop: Usage Basics. (line 23)
* stop <1>: Commands. (line 34)
* TAB: Structure. (line 26)
* Tab and Go: Structure. (line 26)
* template: Template Expansion. (line 6)
* third-party: Structure. (line 10)
* third-party <1>: Troubleshooting. (line 17)
* tooltip: Tooltip Frontends. (line 6)
* troubleshoot: Troubleshooting. (line 6)
* usage: Usage Basics. (line 6)

Tag Table:
Node: Top573
Node: Overview2002
Node: Terminology2410
Node: Structure3717
Node: Getting Started5208
Node: Installation5486
Node: Initial Setup5869
Node: Usage Basics6717
Node: Commands7695
Ref: Commands-Footnote-110093
Node: Customization10260
Node: Customization Interface10732
Node: Configuration File11265
Ref: company-selection-wrap-around13579
Node: Frontends16072
Node: Tooltip Frontends17041
Ref: Tooltip Frontends-Footnote-127755
Node: Preview Frontends27992
Ref: Preview Frontends-Footnote-129250
Node: Echo Frontends29377
Node: Candidates Search30910
Node: Filter Candidates32244
Node: Quick Access a Candidate33024
Node: Backends34642
Node: Backends Usage Basics35672
Ref: Backends Usage Basics-Footnote-137104
Node: Grouped Backends37188
Node: Package Backends38699
Node: Code Completion39628
Node: Text Completion45155
Node: File Name Completion49589
Node: Template Expansion51137
Node: Candidates Post-Processing51856
Node: Troubleshooting54433
Node: Index56106
Node: Key Index56269
Node: Variable Index57768
Node: Function Index62621
Node: Concept Index67321

End Tag Table

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