This is modus-themes.info, produced by makeinfo version 6.7 from
modus-themes.texi.

INFO-DIR-SECTION Emacs misc features
START-INFO-DIR-ENTRY
* Modus Themes: (modus-themes). Highly accessible themes (WCAG AAA).
END-INFO-DIR-ENTRY


File: modus-themes.info,  Node: Top,  Next: Overview,  Up: (dir)

Modus themes for GNU Emacs
**************************

This manual, written by Protesilaos Stavrou, describes the customization
options for the ‘modus-operandi’ and ‘modus-vivendi’ themes, and
provides every other piece of information pertinent to them.

   The documentation furnished herein corresponds to version 0.13.0,
released on 2020-10-08.  Any reference to a newer feature which does not
yet form part of the latest tagged commit, is explicitly marked as such.

   Copyright (C) 2020–2021 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 no Front-Cover Texts,
     and with no Back-Cover Texts.

* Menu:

* Overview::
* Installation::
* Enable and load::
* Customization Options::
* Advanced customization (do-it-yourself)::
* Face coverage::
* Notes for individual packages::
* Contributing::
* Acknowledgements::
* Meta::
* External projects (ports)::
* GNU Free Documentation License::

— The Detailed Node Listing —

Overview

* How do the themes look like::
* Learn about the latest changes::

Installation

* Install from the archives::
* Install on GNU/Linux::

Install on GNU/Linux

* Debian 11 Bullseye::
* GNU Guix::

Enable and load

* Load automatically::
* Load at a given time or at sunset/sunrise::
* Toggle between the themes on demand::
* Configure options prior to loading::

Customization Options

* Bold constructs::              Toggle bold constructs in code
* Slanted constructs::           Toggle slanted constructs (italics) in code
* Syntax highlighting::          Toggle subtle coloration in programming modes
* No mixed fonts::               Toggle mixing of font families
* Link underline::               Toggle underlined text in links
* Command prompts::              Choose among plain, subtle, or intense prompts
* Mode line::                    Choose among plain, three-dimension, or moody-compliant styles
* Completion UIs::               Choose among standard, moderate, or opinionated looks
* Fringes::                      Choose among plain, subtle, or intense fringe visibility
* Line highlighting::            Toggle intense style for current line highlighting
* Matching parentheses::         Toggle intense style for matching delimiters/parentheses
* Diffs::                        Choose among intense, desaturated, or text-only diffs
* Org mode blocks::              Choose among plain, greyscale, or rainbow styles
* Heading styles::               Choose among several styles, also per heading level
* Scaled headings::              Toggle scaling of headings
* Headings' font::               Toggle proportionately spaced fonts in headings

Scaled headings

* Scaled heading sizes::         Specify rate of increase for scaled headings

Advanced customization (do-it-yourself)

* Tweak colors (DIY)::           Declare your own palette overrides
* Font configs (DIY)::           Optimise for mixed typeface buffers
* Org user faces (DIY)::         Extend styles for org-mode keywords and priorities

Face coverage

* Supported packages::           Full list of covered face groups
* Covered indirectly::
* Will NOT be supported::

Notes for individual packages

* Note on company-mode overlay pop-up::
* Note for ERC escaped color sequences::
* Note for powerline or spaceline::
* Note on shr colors::
* Note for Helm grep::
* Note on vc-annotate-background-mode::

Contributing

* Sources of the themes::
* Issues you can help with::
* Merge requests::               Legal considerations for code patches



File: modus-themes.info,  Node: Overview,  Next: Installation,  Prev: Top,  Up: Top

1 Overview
**********

The Modus themes are designed for accessible readability.  They conform
with the highest standard for color contrast between any given
combination of background and foreground values.  This corresponds to
the WCAG AAA standard, which specifies a minimum rate of distance in
relative luminance of 7:1.

   Modus Operandi (‘modus-operandi’) is a light theme, while Modus
Vivendi (‘modus-vivendi’) is dark.  Each theme’s color palette is
designed to meet the needs of the numerous interfaces that are possible
in the Emacs computing environment.

   The overarching objective of this project is to always offer
accessible color combinations.  There shall never be a compromise on
this principle.  If there arises an inescapable trade-off between
readability and stylistic considerations, we will always opt for the
former.

   To ensure that users have a consistently accessible experience, the
themes strive to achieve as close to full face coverage as possible (see
*note Face coverage::).

   Starting with version 0.12.0 and onwards, the themes are built into
GNU Emacs (current version is 0.13.0).

* Menu:

* How do the themes look like::
* Learn about the latest changes::


File: modus-themes.info,  Node: How do the themes look like,  Next: Learn about the latest changes,  Up: Overview

1.1 How do the themes look like
===============================

Check the web page with the screen shots
(https://protesilaos.com/modus-themes-pictures/).  There are lots of
scenarios on display that draw attention to details and important
aspects in the design of the themes.  They also showcase the numerous
customization options.

   *Note Customization Options::.


File: modus-themes.info,  Node: Learn about the latest changes,  Prev: How do the themes look like,  Up: Overview

1.2 Learn about the latest changes
==================================

Please refer to the web page with the change log
(https://protesilaos.com/modus-themes-changelog).  It is comprehensive
and covers everything that goes into every tagged release of the themes.


File: modus-themes.info,  Node: Installation,  Next: Enable and load,  Prev: Overview,  Up: Top

2 Installation
**************

The Modus themes are distributed with Emacs starting with version 28.1.
On older versions of Emacs, they can be installed using Emacs’ package
manager or manually from their code repository.

   Modus Operandi (light theme) and Modus Vivendi (dark) are normally
distributed as standalone packages in Emacs-specific archives.  There
also exist packages for GNU/Linux distributions.

* Menu:

* Install from the archives::
* Install on GNU/Linux::


File: modus-themes.info,  Node: Install from the archives,  Next: Install on GNU/Linux,  Up: Installation

2.1 Install from the archives
=============================

‘modus-operandi-theme’ and ‘modus-vivendi-theme’ are available from the
GNU ELPA archive, which is configured by default.

   Prior to querying any package archive, make sure to have updated the
index, with ‘M-x package-refresh-contents’.  Then all you need to do is
type ‘M-x package-install’ and specify the theme of your choice.


File: modus-themes.info,  Node: Install on GNU/Linux,  Prev: Install from the archives,  Up: Installation

2.2 Install on GNU/Linux
========================

The themes are also available from the archives of some GNU/Linux
distributions.  These should correspond to a tagged release rather than
building directly from the latest Git commit.  It all depends on the
distro’s packaging policies.

* Menu:

* Debian 11 Bullseye::
* GNU Guix::


File: modus-themes.info,  Node: Debian 11 Bullseye,  Next: GNU Guix,  Up: Install on GNU/Linux

2.2.1 Debian 11 Bullseye
------------------------

The two themes are distributed as a single package for Debian and its
derivatives.  Currently in the unstable and testing suites and should be
available in time for Debian 11 Bullseye (next stable).

   Get them with:

     sudo apt install elpa-modus-themes


File: modus-themes.info,  Node: GNU Guix,  Prev: Debian 11 Bullseye,  Up: Install on GNU/Linux

2.2.2 GNU Guix
--------------

Users of either the Guix System (the distro) or just Guix (the package
manager) can get each theme as a standalone package.

     guix package -i emacs-modus-operandi-theme

   And/or:

     guix package -i emacs-modus-vivendi-theme


File: modus-themes.info,  Node: Enable and load,  Next: Customization Options,  Prev: Installation,  Up: Top

3 Enable and load
*****************

This section documents how to load the theme of your choice and how to
further control its initialization.  It also includes some sample code
snippets that could help you in the task, especially if you intend to
use both Modus Operandi and Modus Vivendi.

* Menu:

* Load automatically::
* Load at a given time or at sunset/sunrise::
* Toggle between the themes on demand::
* Configure options prior to loading::


File: modus-themes.info,  Node: Load automatically,  Next: Load at a given time or at sunset/sunrise,  Up: Enable and load

3.1 Load automatically
======================

A simple way to load the theme from your Emacs initialization file is to
include either of the following expressions:

     (load-theme 'modus-operandi t)          ; Light theme
     (load-theme 'modus-vivendi t)           ; Dark theme

   Make sure to remove any other theme that is being loaded, otherwise
you might run into unexpected issues.

   Note that you can always ‘M-x disable-theme’ and specify an item.
The command does exactly what its name suggests.  To deactivate all
enabled themes at once, in case you have multiple of them enabled, you
may evaluate the expression:

     (mapc #'disable-theme custom-enabled-themes)


File: modus-themes.info,  Node: Load at a given time or at sunset/sunrise,  Next: Toggle between the themes on demand,  Prev: Load automatically,  Up: Enable and load

3.2 Load at a given time or at sunset/sunrise
=============================================

It is possible to schedule a time during the day at or after which a
given theme will be loaded.(1)

     ;; Light for the day
     (load-theme 'modus-operandi t t)
     (run-at-time "05:00" (* 60 60 24)
                  (lambda ()
                    (enable-theme 'modus-operandi)))

     ;; Dark for the night
     (load-theme 'modus-vivendi t t)
     (run-at-time "21:00" (* 60 60 24)
                  (lambda ()
                    (enable-theme 'modus-vivendi)))

   A modified version of the above technique is to use the sunrise and
sunset as references, instead of specifying a fixed hour value.(2)  If
you set ‘calendar-latitude’ and ‘calendar-longitude’ (defined in the
built-in ‘solar.el’ library—read it with ‘M-x find-library’), you can
automatically switch between both themes at the appropriate time-of-day.
Note that _those calendar variables need to be set before loading the
themes_.

     ;; Define coordinates
     (setq calendar-latitude 35.17
           calendar-longitude 33.36)

     ;; Light at sunrise
     (load-theme 'modus-operandi t t)
     (run-at-time (nth 1 (split-string (sunrise-sunset)))
                  (* 60 60 24)
                  (lambda ()
                    (enable-theme 'modus-operandi)))

     ;; Dark at sunset
     (load-theme 'modus-vivendi t t)
     (run-at-time (nth 4 (split-string (sunrise-sunset)))
                  (* 60 60 24)
                  (lambda ()
                    (enable-theme 'modus-vivendi)))

   For the sake of completeness, the ‘load-theme’ call in these snippets
is slightly different than the one shown in *note Load automatically::,
because it does not enable the theme directly: the subsequent
‘enable-theme’ does that when needed.

   ---------- Footnotes ----------

   (1) Contributed on Reddit by user ‘b3n’
<https://www.reddit.com/r/emacs/comments/gdtqov/weekly_tipstricketc_thread/fq9186h/>.

   (2) Contributed directly by André Alexandre Gomes
<https://gitlab.com/aadcg>.


File: modus-themes.info,  Node: Toggle between the themes on demand,  Next: Configure options prior to loading,  Prev: Load at a given time or at sunset/sunrise,  Up: Enable and load

3.3 Toggle between the themes on demand
=======================================

With both themes available, it is possible to design a simple command to
switch between them on demand.

     (defun modus-themes-toggle ()
       "Toggle between `modus-operandi' and `modus-vivendi' themes."
       (interactive)
       (if (eq (car custom-enabled-themes) 'modus-operandi)
           (progn
             (disable-theme 'modus-operandi)
             (load-theme 'modus-vivendi t))
         (disable-theme 'modus-vivendi)
         (load-theme 'modus-operandi t)))

   You could use ‘(mapc #'disable-theme custom-enabled-themes)’ instead
of disabling a single target, but you get the idea.


File: modus-themes.info,  Node: Configure options prior to loading,  Prev: Toggle between the themes on demand,  Up: Enable and load

3.4 Configure options prior to loading
======================================

If you plan to use both themes and wish to apply styles consistently
(see *note Customization Options::), you could define wrapper functions
around the standard ‘load-theme’ command.  These extend the simple
function we presented in *note Toggle between the themes on demand::.

   Here is a comprehensive setup (the values assigned to the variables
are just for the sake of this demonstration):(1)

     (defmacro modus-themes-format-sexp (sexp &rest objects)
       `(eval (read (format ,(format "%S" sexp) ,@objects))))

     (dolist (theme '("operandi" "vivendi"))
       (modus-themes-format-sexp
        (defun modus-%1$s-theme-load ()
          (setq modus-%1$s-theme-slanted-constructs t
                modus-%1$s-theme-bold-constructs t
                modus-%1$s-theme-fringes 'subtle ; {nil,'subtle,'intense}
                modus-%1$s-theme-mode-line '3d ; {nil,'3d,'moody}
                modus-%1$s-theme-faint-syntax nil
                modus-%1$s-theme-intense-hl-line nil
                modus-%1$s-theme-intense-paren-match nil
                modus-%1$s-theme-no-link-underline t
                modus-%1$s-theme-no-mixed-fonts nil
                modus-%1$s-theme-prompts nil ; {nil,'subtle,'intense}
                modus-%1$s-theme-completions 'moderate ; {nil,'moderate,'opinionated}
                modus-%1$s-theme-diffs nil ; {nil,'desaturated,'fg-only}
                modus-%1$s-theme-org-blocks 'greyscale ; {nil,'greyscale,'rainbow}
                modus-%1$s-theme-headings  ; Read further below in the manual for this one
                '((1 . section)
                  (2 . line)
                  (t . rainbow-line-no-bold))
                modus-%1$s-theme-variable-pitch-headings nil
                modus-%1$s-theme-scale-headings t
                modus-%1$s-theme-scale-1 1.1
                modus-%1$s-theme-scale-2 1.15
                modus-%1$s-theme-scale-3 1.21
                modus-%1$s-theme-scale-4 1.27
                modus-%1$s-theme-scale-5 1.33)
          (load-theme 'modus-%1$s t))
        theme))

     (defun modus-themes-toggle ()
       "Toggle between `modus-operandi' and `modus-vivendi' themes."
       (interactive)
       (if (eq (car custom-enabled-themes) 'modus-operandi)
           (progn
             (disable-theme 'modus-operandi)
             (modus-vivendi-theme-load))
         (disable-theme 'modus-vivendi)
         (modus-operandi-theme-load)))

   ---------- Footnotes ----------

   (1) The ‘defmacro’ and ‘dolist’ method were contributed on Reddit by
user ‘b3n’,
<https://www.reddit.com/r/emacs/comments/gqsz8u/weekly_tipstricketc_thread/fsfakhg/>.


File: modus-themes.info,  Node: Customization Options,  Next: Advanced customization (do-it-yourself),  Prev: Enable and load,  Up: Top

4 Customization Options
***********************

The Modus themes are highly configurable, though they should work well
without any further tweaks.

   By default, all customization options are set to ‘nil’.

   All customization options need to be evaluated before loading their
theme (*note Enable and load::).

* Menu:

* Bold constructs::              Toggle bold constructs in code
* Slanted constructs::           Toggle slanted constructs (italics) in code
* Syntax highlighting::          Toggle subtle coloration in programming modes
* No mixed fonts::               Toggle mixing of font families
* Link underline::               Toggle underlined text in links
* Command prompts::              Choose among plain, subtle, or intense prompts
* Mode line::                    Choose among plain, three-dimension, or moody-compliant styles
* Completion UIs::               Choose among standard, moderate, or opinionated looks
* Fringes::                      Choose among plain, subtle, or intense fringe visibility
* Line highlighting::            Toggle intense style for current line highlighting
* Matching parentheses::         Toggle intense style for matching delimiters/parentheses
* Diffs::                        Choose among intense, desaturated, or text-only diffs
* Org mode blocks::              Choose among plain, greyscale, or rainbow styles
* Heading styles::               Choose among several styles, also per heading level
* Scaled headings::              Toggle scaling of headings
* Headings' font::               Toggle proportionately spaced fonts in headings


File: modus-themes.info,  Node: Bold constructs,  Next: Slanted constructs,  Up: Customization Options

4.1 Option for more bold constructs
===================================

Symbol names:

   • ‘modus-operandi-theme-bold-constructs’
   • ‘modus-vivendi-theme-bold-constructs’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Display several constructs in bold weight.  This concerns keywords
and other important aspects of code syntax.  It also affects certain
mode line indicators and command-line prompts.

   The default is to only use a bold weight when it is required.

   Additionally, and while not necessary, to define the precise weight
for bold constructs, you can change the typographic intensity of the
‘bold’ face.  The standard is a bold weight.  It requires no further
intervention.  Assuming though that your typeface of choice supports a
“semibold” weight, adding the following snippet to your init file should
suffice.

     (set-face-attribute 'bold nil :weight 'semibold)

   Note that if you are switching themes, you need to re-evaluate this
expression after the new theme is loaded.


File: modus-themes.info,  Node: Slanted constructs,  Next: Syntax highlighting,  Prev: Bold constructs,  Up: Customization Options

4.2 Option for more slanted constructs
======================================

Symbol names:

   • ‘modus-operandi-theme-slanted-constructs’
   • ‘modus-vivendi-theme-slanted-constructs’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Choose to render more faces in slanted text (italics).  This
typically affects documentation strings and code comments.

   The default is to not use italics unless it is absolutely necessary.


File: modus-themes.info,  Node: Syntax highlighting,  Next: No mixed fonts,  Prev: Slanted constructs,  Up: Customization Options

4.3 Option for faint code syntax highlighting
=============================================

Symbol names:

   • ‘modus-operandi-theme-faint-syntax’
   • ‘modus-vivendi-theme-faint-syntax’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Use less saturated colors in programming modes for highlighting code
syntax.  The default is to use saturated colors.

   This option essentially affects the font-lock faces, so it may also
have implications in other places that are hard-wired to rely directly
on them instead of specifying their own faces (which could inherit from
font-lock if that is the intent).  The author is aware of ‘vc-dir’ as a
case in point.


File: modus-themes.info,  Node: No mixed fonts,  Next: Link underline,  Prev: Syntax highlighting,  Up: Customization Options

4.4 Option for no font mixing
=============================

Symbol names:

   • ‘modus-operandi-theme-no-mixed-fonts’
   • ‘modus-vivendi-theme-no-mixed-fonts’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   By default, the themes configure some spacing-sensitive faces, such
as Org tables and code blocks, to always inherit from the ‘fixed-pitch’
face.  This is to ensure that those constructs remain monospaced when
users opt for something like the built-in ‘M-x variable-pitch-mode’.
Otherwise the layout would appear broken.  To disable this behaviour,
set the option to ‘t’.

   Users may prefer to use another package for handling mixed typeface
configurations, rather than letting the theme do it, perhaps because a
purpose-specific package has extra functionality.  Two possible options
are ‘org-variable-pitch’ and ‘mixed-pitch’.


File: modus-themes.info,  Node: Link underline,  Next: Command prompts,  Prev: No mixed fonts,  Up: Customization Options

4.5 Option for no link underline
================================

Symbol names:

   • ‘modus-operandi-theme-no-link-underline’
   • ‘modus-vivendi-theme-no-link-underline’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Remove the underline effect from links, symbolic links, and buttons.
The default is to apply an underline.


File: modus-themes.info,  Node: Command prompts,  Next: Mode line,  Prev: Link underline,  Up: Customization Options

4.6 Option for command prompt styles
====================================

Symbol names:

   • ‘modus-operandi-theme-prompts’
   • ‘modus-vivendi-theme-prompts’

   Possible values:

  1. ‘nil’ (default)
  2. ‘subtle’
  3. ‘intense’

   The symbols “subtle” and “intense” will apply a combination of
accented background and foreground to the minibuffer and other REPL
prompts (like ‘M-x shell’ and ‘M-x eshell’).  The difference between the
two is that the latter has a more pronounced/noticeable effect than the
former.

   The default does not use any background for such prompts, while
relying exclusively on an accented foreground color.


File: modus-themes.info,  Node: Mode line,  Next: Completion UIs,  Prev: Command prompts,  Up: Customization Options

4.7 Option for mode line presentation
=====================================

Symbol names:

   • ‘modus-operandi-theme-mode-line’
   • ‘modus-vivendi-theme-mode-line’

   Possible values:

  1. ‘nil’ (default)
  2. ‘3d’
  3. ‘moody’

   The default value (‘nil’) produces a two-dimensional effect both for
the active and inactive modelines.  The differences between the two are
limited to distinct shades of greyscale values, with the active being
more intense than the inactive.

   A ‘3d’ symbol will make the active modeline look like a
three-dimensional rectangle.  Inactive modelines remain 2D, though they
are slightly toned down relative to the default.  This aesthetic is the
same as what you get when you run Emacs without any customizations
(‘emacs -Q’ on the command line).

   While ‘moody’ removes all box effects from the modelines and applies
underline and overline properties instead.  It also tones down a bit the
inactive modelines.  This is meant to optimize things for use with the
moody package (https://github.com/tarsius/moody) (hereinafter referred
to as “Moody”), though it can work fine even without it.

   Note that Moody does not expose any faces that the themes could style
directly.  Instead it re-purposes existing ones to render its tabs and
ribbons.  As such, there may be cases where the contrast ratio falls
below the 7:1 target that the themes conform with (WCAG AAA). To hedge
against this, we configure a fallback foreground for the ‘moody’ option,
which will come into effect when the background of the modeline changes
to something less accessible, such as Moody ribbons (read the doc string
of ‘set-face-attribute’, specifically ‘:distant-foreground’).  This
fallback comes into effect when Emacs determines that the background and
foreground of the given construct are too close to each other in terms
of color distance.  In effect, users would need to experiment with the
variable ‘face-near-same-color-threshold’ to trigger the fallback color.
We find that a value of ‘45000’ would suffice, contrary to the default
‘30000’.  Do not set the value too high, because that would have the
adverse effect of always overriding the default color (which has been
carefully designed to be highly accessible).

   Furthermore, because Moody expects an underline and overline instead
of a box style, it is recommended you also include this in your setup:

     (setq x-underline-at-descent-line t)


File: modus-themes.info,  Node: Completion UIs,  Next: Fringes,  Prev: Mode line,  Up: Customization Options

4.8 Option for completion framework aesthetics
==============================================

Symbol names:

   • ‘modus-operandi-theme-completions’
   • ‘modus-vivendi-theme-completions’

   Possible values:

  1. ‘nil’ (default)
  2. ‘moderate’
  3. ‘opinionated’

   This is a special option that has different effects depending on the
completion UI.  The interfaces can be grouped in two categories, based
on their default aesthetics: (i) those that only or mostly use
foreground colors for their interaction model, and (ii) those that
combine background and foreground values for some of their metaphors.
The former category encompasses Icomplete, Ido, Selectrum as well as
pattern matching styles like Orderless and Flx.  The latter covers Helm,
Ivy, and similar.

   A value of ‘nil’ will respect the metaphors of each completion
framework.

   The symbol ‘moderate’ will apply a combination of background and
foreground that is fairly subtle.  For Icomplete and friends this
constitutes a departure from their default aesthetics, however the
difference is small.  While Helm et al will appear slightly different
than their original looks, as they are toned down a bit.

   The symbol ‘opinionated’ will apply color combinations that refashion
the completion UI.  For the Icomplete camp this means that intense
background and foreground combinations are used: in effect their looks
emulate those of Ivy and co.  in their original style.  Whereas the
other group of packages will revert to an even more nuanced aesthetic
with some additional changes to the choice of hues.

   To appreciate the scope of this customization option, you should
spend some time with every one of the ‘nil’ (default), ‘moderate’, and
‘opinionated’ possibilities.


File: modus-themes.info,  Node: Fringes,  Next: Line highlighting,  Prev: Completion UIs,  Up: Customization Options

4.9 Option for fringe visibility
================================

Symbol names:

   • ‘modus-operandi-theme-fringes’
   • ‘modus-vivendi-theme-fringes’

   Possible values:

  1. ‘nil’ (default)
  2. ‘subtle’
  3. ‘intense’

   The “subtle” symbol will apply a greyscale background that is
visible, yet close enough to the main background color.  While the
“intense” symbol will use a more noticeable greyscale background.

   The default is to use the same color as that of the main background,
meaning that the fringes are not obvious though they still occupy the
space given to them by ‘fringe-mode’.


File: modus-themes.info,  Node: Line highlighting,  Next: Matching parentheses,  Prev: Fringes,  Up: Customization Options

4.10 Option for line highlighting (hl-line-mode)
================================================

Symbol names:

   • ‘modus-operandi-theme-intense-hl-line’
   • ‘modus-vivendi-theme-intense-hl-line’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Draw the current line of ‘hl-line-mode’ or its global equivalent in a
more prominent background color.  This would also affect several
packages that enable ‘hl-line-mode’, such as ‘elfeed’ and ‘mu4e’.

   The default is to use a more subtle gray.


File: modus-themes.info,  Node: Matching parentheses,  Next: Diffs,  Prev: Line highlighting,  Up: Customization Options

4.11 Option for parenthesis matching (show-paren-mode)
======================================================

Symbol names:

   • ‘modus-operandi-theme-intense-paren-match’
   • ‘modus-vivendi-theme-intense-paren-match’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Apply a more intense background to the matching parentheses (or
delimiters).  This affects tools such as the built-in ‘show-paren-mode’.
The default is to use a subtle warm color for the background of those
overlays.


File: modus-themes.info,  Node: Diffs,  Next: Org mode blocks,  Prev: Matching parentheses,  Up: Customization Options

4.12 Option for diff buffer looks
=================================

Symbol names:

   • ‘modus-operandi-theme-diffs’
   • ‘modus-vivendi-theme-diffs’

   Possible values:

  1. ‘nil’ (default)
  2. ‘desaturated’
  3. ‘fg-only’

   By default the themes will apply richly colored backgrounds to the
output of diffs, such as those of ‘diff-mode’, ‘ediff’, ‘smerge-mode’,
and ‘magit’.  These are color combinations of an accented background and
foreground so that, for example, added lines have a pronounced green
background with an appropriate shade of green for the affected text.
Word-wise or “refined” changes follow this pattern but use different
shades of those colors to remain distinct.

   A ‘desaturated’ value tones down all relevant color values.  It still
combines an accented background with an appropriate foreground, yet its
overall impression is very subtle.  Refined changes are a bit more
intense to fulfil their intended function, though still less saturated
than default.

   While ‘fg-only’ will remove all accented backgrounds and instead rely
on color-coded text to denote changes.  For instance, added lines use an
intense green foreground, while their background is the same as the rest
of the buffer.  Word-wise highlights still use a background value which
is, nonetheless, more subtle than its default equivalent.

   Concerning ‘magit’, an extra set of tweaks are introduced for the
effect of highlighting the current diff hunk, so as to remain consistent
with the overall experience of that mode.  Expect changes that are
consistent with the overall intent of the aforementioned.


File: modus-themes.info,  Node: Org mode blocks,  Next: Heading styles,  Prev: Diffs,  Up: Customization Options

4.13 Option for org-mode block styles
=====================================

Symbol names:

   • ‘modus-operandi-theme-org-blocks’
   • ‘modus-vivendi-theme-org-blocks’

   Possible values:

  1. ‘nil’ (default)
  2. ‘greyscale’
  3. ‘rainbow’

   The default is to use the same background as the rest of the buffer
for the contents of the block.

   A value of ‘greyscale’ will apply a subtle neutral gray background to
the block’s contents.  It will also extend to the edge of the window the
background of the “begin” and “end” block delimiter lines (only relevant
for Emacs versions >= 27 where the ’extend’ keyword is recognised by
‘set-face-attribute’).

   While ‘rainbow’ will instead use an accented background for the
contents of the block.  The exact color will depend on the programming
language and is controlled by the ‘org-src-block-faces’ variable (refer
to the theme’s source code for the current association list).  This is
most suitable for users who work on literate programming documents that
mix and match several languages.

   Note that the “rainbow” blocks may require you to also reload the
major-mode so that the colors are applied properly: use ‘M-x org-mode’
or ‘M-x org-mode-restart’ to refresh the buffer.  Or start typing in
each code block (inefficient at scale, but it still works).


File: modus-themes.info,  Node: Heading styles,  Next: Scaled headings,  Prev: Org mode blocks,  Up: Customization Options

4.14 Option for headings’ overall style
=======================================

This is defined as an alist and, therefore, uses a different approach
than other customization options documented in this manual.

   Symbol names:

   • ‘modus-operandi-theme-headings’
   • ‘modus-vivendi-theme-headings’

   Possible values, which can be specified for each heading level
(examples further below):

   • nil (default fallback option—covers all heading levels)
   • ‘t’ (default style for a single heading, when the fallback differs)
   • ‘no-bold’
   • ‘line’
   • ‘line-no-bold’
   • ‘rainbow’
   • ‘rainbow-line’
   • ‘rainbow-line-no-bold’
   • ‘highlight’
   • ‘highlight-no-bold’
   • ‘rainbow-highlight’
   • ‘rainbow-highlight-no-bold’
   • ‘section’
   • ‘section-no-bold’
   • ‘rainbow-section’
   • ‘rainbow-section-no-bold’

   To control faces per level from 1-8, use something like this (same
for ‘modus-vivendi-theme-headings’):

     (setq modus-operandi-theme-headings
           '((1 . section)
             (2 . line)
             (3 . highlight)
             (t . rainbow-no-bold)))

   The above uses the ‘section’ value for heading levels 1, the ‘line’
for headings 2, ‘highlight’ for 3.  All other levels fall back to
‘rainbow-line-no-bold’.

   To set a uniform value for all heading levels, use this pattern:

     ;; A given style for every heading
     (setq modus-operandi-theme-headings
           '((t . rainbow-line-no-bold)))

     ;; Default aesthetic for every heading
     (setq modus-operandi-theme-headings
           '((t . nil)))

   The default style for headings uses a fairly desaturated foreground
value in combination with a bold typographic weight.  To specify this
style for a given level N (assuming you wish to have another fallback
option), just specify the value ‘t’ like this:

     (setq modus-operandi-theme-headings
           '((1 . t)
             (2 . line)
             (t . rainbow-line-no-bold)))

   A description of all other possible styles:

   • ‘no-bold’ retains the default text color while removing the
     typographic weight.

   • ‘line’ is the same as the default plus an overline over the
     heading.

   • ‘line-no-bold’ is the same as ‘line’ without bold weight.

   • ‘rainbow’ uses a more colorful foreground in combination with bold
     weight.

   • ‘rainbow-line’ is the same as ‘rainbow’ plus an overline.

   • ‘rainbow-line-no-bold’ is the same as ‘rainbow-line’ without the
     bold weight.

   • ‘highlight’ retains the default style of a fairly desaturated
     foreground combined with a bold weight and adds to it a subtle
     accented background.

   • ‘highlight-no-bold’ is the same as ‘highlight’ without a bold
     weight.

   • ‘rainbow-highlight’ is the same as ‘highlight’ but with a more
     colorful foreground.

   • ‘rainbow-highlight-no-bold’ is the same as ‘rainbow-highlight’
     without a bold weight.

   • ‘section’ retains the default looks and adds to them both an
     overline and a slightly accented background.  It is, in effect, a
     combination of the ‘line’ and ‘highlight’ values.

   • ‘section-no-bold’ is the same as ‘section’ without a bold weight.

   • ‘rainbow-section’ is the same as ‘section’ but with a more colorful
     foreground.

   • ‘rainbow-section-no-bold’ is the same as ‘rainbow-section’ without
     a bold weight.“


File: modus-themes.info,  Node: Scaled headings,  Next: Headings' font,  Prev: Heading styles,  Up: Customization Options

4.15 Option for scaled headings
===============================

Symbol names:

   • ‘modus-operandi-theme-scale-headings’
   • ‘modus-vivendi-theme-scale-headings’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Make headings larger in height relative to the main text.  This is
noticeable in modes like Org.  The default is to use the same size for
headings and body copy.

* Menu:

* Scaled heading sizes::         Specify rate of increase for scaled headings


File: modus-themes.info,  Node: Scaled heading sizes,  Up: Scaled headings

4.15.1 Control the scale of headings
------------------------------------

In addition to toggles for enabling scaled headings, users can also
specify a number of their own.

   • If it is a floating point, say, ‘1.5’, it is interpreted as a
     multiple of the base font size.  This is the recommended method.

   • If it is an integer, it is read as an absolute font height.  The
     number is basically the point size multiplied by ten.  So if you
     want it to be ‘18pt’ you must pass ‘180’.  Please understand that
     setting an absolute value is discouraged, as it will break the
     layout when you try to change font sizes with the built-in
     ‘text-scale-adjust’ command (see *note Font configurations: Font
     configs (DIY).).

   Below are the variables in their default values, using the floating
point paradigm.  The numbers are very conservative, but you are free to
change them to your liking, such as ‘1.2’, ‘1.4’, ‘1.6’, ‘1.8’, ‘2.0’—or
use a resource for finding a consistent scale:

     (setq modus-operandi-theme-scale-1 1.05
           modus-operandi-theme-scale-2 1.1
           modus-operandi-theme-scale-3 1.15
           modus-operandi-theme-scale-4 1.2
           modus-operandi-theme-scale-5 1.3)

     (setq modus-vivendi-theme-scale-1 1.05
           modus-vivendi-theme-scale-2 1.1
           modus-vivendi-theme-scale-3 1.15
           modus-vivendi-theme-scale-4 1.2
           modus-vivendi-theme-scale-5 1.3)

   Note that in earlier versions of Org, scaling would only increase the
size of the heading, but not of keywords that were added to it, like
“TODO”.  The issue has been fixed upstream:
<https://protesilaos.com/codelog/2020-09-24-org-headings-adapt/>.


File: modus-themes.info,  Node: Headings' font,  Prev: Scaled headings,  Up: Customization Options

4.16 Option for variable-pitch font in headings
===============================================

Symbol names:

   • ‘modus-operandi-theme-variable-pitch-headings’
   • ‘modus-vivendi-theme-variable-pitch-headings’

   Possible values:

  1. ‘nil’ (default)
  2. ‘t’

   Choose to apply a proportionately spaced, else “variable-pitch”,
typeface to headings (such as in Org mode).  The default is to use the
main font family.

   *note Font configurations for Org (and others): Font configs (DIY).


File: modus-themes.info,  Node: Advanced customization (do-it-yourself),  Next: Face coverage,  Prev: Customization Options,  Up: Top

5 Advanced customization (do-it-yourself)
*****************************************

Unlike the predefined customization options which follow a
straightforward pattern of allowing the user to quickly specify their
preference, the themes also provide a more flexible, albeit difficult,
mechanism to control things with precision (see *note Customization
Options::).

   This section is of interest only to users who are prepared to
maintain their own local tweaks and who are willing to deal with any
possible incompatibilities between versioned releases of the themes.  As
such, they are labelled as “do-it-yourself” or “DIY”.

* Menu:

* Tweak colors (DIY)::           Declare your own palette overrides
* Font configs (DIY)::           Optimise for mixed typeface buffers
* Org user faces (DIY)::         Extend styles for org-mode keywords and priorities


File: modus-themes.info,  Node: Tweak colors (DIY),  Next: Font configs (DIY),  Up: Advanced customization (do-it-yourself)

5.1 Full access to the themes’ palette
======================================

The variables are:

   • ‘modus-operandi-theme-override-colors-alist’
   • ‘modus-vivendi-theme-override-colors-alist’

   Users can specify an association list that maps the names of color
variables to hexadecimal RGB values (in the form of ‘#RRGGBB’).  This
means that it is possible to override the entire palette or subsets
thereof (see the source code for the actual names and values).

   Example:

     ;; Redefine the values of those three variables for the given theme
     (setq modus-vivendi-theme-override-colors-alist
           '(("magenta" . "#ffaabb")
             ("magenta-alt" . "#ee88ff")
             ("magenta-alt-other" . "#bbaaff")))

   If you want to be creative, you can define a minor mode that
refashions the themes on demand.  The following is a minor mode that
gets activated on demand.  We combine it with the function to switch
between Modus Operandi and Modus Vivendi (*note Toggle between the
themes on demand::, for a basic command, and/or *note Configure options
prior to loading::, for a more comprehensive setup).

     (define-minor-mode modus-themes-alt-mode
       "Override Modus themes' palette variables with custom values.

     This is intended as a proof-of-concept.  It is, nonetheless, a
     perfectly accessible alternative, conforming with the design
     principles of the Modus themes.  It still is not as good as the
     default colors."
       :init-value nil
       :global t
       (if modus-themes-alt-mode
           (setq modus-operandi-theme-override-colors-alist
                 '(("bg-main" . "#fefcf4")
                   ("bg-dim" . "#faf6ef")
                   ("bg-alt" . "#f7efe5")
                   ("bg-hl-line" . "#f4f0e3")
                   ("bg-active" . "#e8dfd1")
                   ("bg-inactive" . "#f6ece5")
                   ("bg-region" . "#c6bab1")
                   ("bg-header" . "#ede3e0")
                   ("bg-tab-bar" . "#dcd3d3")
                   ("bg-tab-active" . "#fdf6eb")
                   ("bg-tab-inactive" . "#c8bab8")
                   ("fg-unfocused" . "#55556f"))
                 modus-vivendi-theme-override-colors-alist
                 '(("bg-main" . "#100b17")
                   ("bg-dim" . "#161129")
                   ("bg-alt" . "#181732")
                   ("bg-hl-line" . "#191628")
                   ("bg-active" . "#282e46")
                   ("bg-inactive" . "#1a1e39")
                   ("bg-region" . "#393a53")
                   ("bg-header" . "#202037")
                   ("bg-tab-bar" . "#262b41")
                   ("bg-tab-active" . "#120f18")
                   ("bg-tab-inactive" . "#3a3a5a")
                   ("fg-unfocused" . "#9a9aab")))
         (setq modus-operandi-theme-override-colors-alist nil
               modus-vivendi-theme-override-colors-alist nil)))

     (defun modus-themes-toggle (&optional arg)
       "Toggle between `modus-operandi' and `modus-vivendi' themes.

     With optional \\[universal-argument] prefix, enable
     `modus-themes-alt-mode' for the loaded theme."
       (interactive "P")
       (if arg
           (modus-themes-alt-mode 1)
         (modus-themes-alt-mode -1))
       (if (eq (car custom-enabled-themes) 'modus-operandi)
           (progn
             (disable-theme 'modus-operandi)
             (load-theme 'modus-vivendi t))
         (disable-theme 'modus-vivendi)
         (load-theme 'modus-operandi t)))


File: modus-themes.info,  Node: Font configs (DIY),  Next: Org user faces (DIY),  Prev: Tweak colors (DIY),  Up: Advanced customization (do-it-yourself)

5.2 Font configurations for Org (and others)
============================================

The themes are designed to cope well with mixed font settings (*note
Option for no font mixing: No mixed fonts.).  Currently this applies to
‘org-mode’ and ‘markdown-mode’.

   In practice it means that the user can safely opt for a more
prose-friendly proportionately spaced typeface as their default, while
letting spacing-sensitive elements like tables and inline code always
use a monospaced font, by inheriting from the ‘fixed-pitch’ face.

   Users can try the built-in ‘M-x variable-pitch-mode’ to see the
effect in action.

   To make everything use your desired font families, you need to
configure the ‘variable-pitch’ (proportional spacing) and ‘fixed-pitch’
(monospaced) faces respectively.  It may also be convenient to set your
main typeface by configuring the ‘default’ face the same way.

   Put something like this in your initialization file (make sure to
read the documentation of ‘set-face-attribute’, with ‘M-x
describe-function’):

     ;; Main typeface
     (set-face-attribute 'default nil :family "DejaVu Sans Mono" :height 110)

     ;; Proportionately spaced typeface
     (set-face-attribute 'variable-pitch nil :family "DejaVu Serif" :height 1.0)

     ;; Monospaced typeface
     (set-face-attribute 'fixed-pitch nil :family "DejaVu Sans Mono" :height 1.0)

   Note the differences in the ‘:height’ property.  The ‘default’ face
must specify an absolute value, which is the point size × 10.  So if you
want to use a font at point size ‘11’, you set the height at ‘110’.(1)
Whereas every other face must have a value that is relative to the
default, represented as a floating point (if you use an integer, say,
‘15’ then that means an absolute height).  This is of paramount
importantance: it ensures that all fonts can scale gracefully when using
something like the ‘text-scale-adjust’ command which only operates on
the base font size (i.e.  the ‘default’ face’s absolute height).

   An alternative syntax for the ‘default’ face, is to pass all typeface
parameters directly to a ‘font’ property.(2)  Note that here we use a
standard point size:

     (set-face-attribute 'default nil :font "DejaVu Sans Mono-11")

   Again, remember to only ever specify an absolute height for the
‘default’.

   ---------- Footnotes ----------

   (1) ‘:height’ values do not need to be rounded to multiples of ten:
the likes of ‘115’ are perfectly valid—some typefaces will change to
account for those finer increments.

   (2) Has the benefit of accepting ‘fontconfig’ parameters (GNU/Linux),
such as ‘"DejaVu Sans Mono-11:hintstyle=hintslight:autohint=false"’.
<https://www.freedesktop.org/software/fontconfig/fontconfig-user.html>


File: modus-themes.info,  Node: Org user faces (DIY),  Prev: Font configs (DIY),  Up: Advanced customization (do-it-yourself)

5.3 Org user faces (DIY)
========================

Users of ‘org-mode’ have the option to configure various keywords and
priority cookies to better match their workflow.  User options are
‘org-todo-keyword-faces’ and ‘org-priority-faces’.

   As those are meant to be custom faces, it would be futile to have the
themes try to guess what each user would want to use, which keywords to
target, and so on.  Instead, we can provide guidelines on how to
customize things to one’s liking with the intent of retaining the
overall aesthetics of the theme.

   Please bear in mind that the end result of those is not controlled by
the active theme but by how Org maps faces to its constructs.  Editing
those while ‘org-mode’ is active requires ‘M-x org-mode-restart’ for
changes to take effect.

   Let us assume you wish to visually differentiate your keywords.  You
have something like this:

     (setq org-todo-keywords
           '((sequence "TODO(t)" "|" "DONE(D)" "CANCEL(C)")
             (sequence "MEET(m)" "|" "MET(M)")
             (sequence "STUDY(s)" "|" "STUDIED(S)")
             (sequence "WRITE(w)" "|" "WROTE(W)")))

   You could then use a variant of the following to inherit from a face
that uses the styles you want and also to preserve the properties
applied by the ‘org-todo’ face:

     (setq org-todo-keyword-faces
           '(("MEET" . '(font-lock-preprocessor-face org-todo))
             ("STUDY" . '(font-lock-variable-name-face org-todo))
             ("WRITE" . '(font-lock-type-face org-todo))))

   This will refashion the keywords you specify, while letting the other
items in ‘org-todo-keywords’ use their original styles (which are
defined in the ‘org-todo’ and ‘org-done’ faces).

   If you want back the defaults, try specifying just the ‘org-todo’
face:

     (setq org-todo-keyword-faces
           '(("MEET" . org-todo)
             ("STUDY" . org-todo)
             ("WRITE" . org-todo)))

   When you inherit from multiple faces, you need to quote the list as
shown further above.  The order is important: the last item is applied
over the previous ones.  If you do not want to blend multiple faces, you
do not need a quoted list.  A pattern of ‘keyword . face’ would suffice.

   Both approaches can be used simultaneously, as illustrated in this
configuration of the priority cookies:

     (setq org-priority-faces
           '((?A . '(org-scheduled-today org-priority))
             (?B . org-priority)
             (?C . '(shadow org-priority))))

   To find all the faces that are loaded in your current Emacs session,
use ‘M-x list-faces-display’.  Also try ‘M-x describe-variable’ and then
specify the name of each of those Org variables demonstrated above.
Their documentation strings will offer you further guidance.

   Furthermore, consider reading the “Notes for aspiring Emacs theme
developers”, published on 2020-08-28 by me (Protesilaos Stavrou):
<https://protesilaos.com/codelog/2020-08-28-notes-emacs-theme-devs/>.


File: modus-themes.info,  Node: Face coverage,  Next: Notes for individual packages,  Prev: Advanced customization (do-it-yourself),  Up: Top

6 Face coverage
***************

Modus Operandi and Modus Vivendi try to provide as close to full face
coverage as possible.  This is necessary to ensure a consistently
accessible reading experience across all possible interfaces.

* Menu:

* Supported packages::           Full list of covered face groups
* Covered indirectly::
* Will NOT be supported::


File: modus-themes.info,  Node: Supported packages,  Next: Covered indirectly,  Up: Face coverage

6.1 Full support for packages or face groups
============================================

This list will always be updated to reflect the current state of the
project.  The idea is to offer an overview of the known status of all
affected face groups.  The items with an appended asterisk ‘*’ tend to
have lots of extensions, so the “full support” may not be 100% true…

   • ace-window
   • ag
   • alert
   • all-the-icons
   • annotate
   • anzu
   • apropos
   • apt-sources-list
   • artbollocks-mode
   • auctex and TeX
   • auto-dim-other-buffers
   • avy
   • awesome-tray
   • binder
   • bm
   • bongo
   • boon
   • breakpoint (provided by the built-in ‘gdb-mi.el’ library)
   • buffer-expose
   • calendar and diary
   • calfw
   • centaur-tabs
   • change-log and log-view (such as ‘vc-print-log’ and
     ‘vc-print-root-log’)
   • cider
   • circe
   • color-rg
   • column-enforce-mode
   • company-mode*
   • company-posframe
   • compilation-mode
   • completions
   • counsel*
   • counsel-css
   • counsel-notmuch
   • counsel-org-capture-string
   • cov
   • cperl-mode
   • csv-mode
   • ctrlf
   • custom (‘M-x customize’)
   • dap-mode
   • dashboard (emacs-dashboard)
   • deadgrep
   • debbugs
   • define-word
   • deft
   • dictionary
   • diff-hl
   • diff-mode
   • dim-autoload
   • dir-treeview
   • dired
   • dired-async
   • dired-git
   • dired-git-info
   • dired-narrow
   • dired-subtree
   • diredfl
   • disk-usage
   • doom-modeline
   • dynamic-ruler
   • easy-jekyll
   • easy-kill
   • ebdb
   • ediff
   • eglot
   • el-search
   • eldoc-box
   • elfeed
   • elfeed-score
   • emms
   • enhanced-ruby-mode
   • epa
   • equake
   • erc
   • eros
   • ert
   • eshell
   • eshell-fringe-status
   • eshell-git-prompt
   • eshell-prompt-extras (epe)
   • eshell-syntax-highlighting
   • evil* (evil-mode)
   • evil-goggles
   • evil-visual-mark-mode
   • eww
   • eyebrowse
   • fancy-dabbrev
   • flycheck
   • flycheck-color-mode-line
   • flycheck-indicator
   • flycheck-posframe
   • flymake
   • flyspell
   • flyspell-correct
   • flx
   • freeze-it
   • frog-menu
   • focus
   • fold-this
   • font-lock (generic syntax highlighting)
   • forge
   • fountain (fountain-mode)
   • geiser
   • git-commit
   • git-gutter (and variants)
   • git-lens
   • git-rebase
   • git-timemachine
   • git-walktree
   • gnus
   • golden-ratio-scroll-screen
   • helm*
   • helm-ls-git
   • helm-switch-shell
   • helm-xref
   • helpful
   • highlight-blocks
   • highlight-defined
   • highlight-escape-sequences (‘hes-mode’)
   • highlight-indentation
   • highlight-numbers
   • highlight-symbol
   • highlight-tail
   • highlight-thing
   • hl-defined
   • hl-fill-column
   • hl-line-mode
   • hl-todo
   • hydra
   • hyperlist
   • ibuffer
   • icomplete
   • icomplete-vertical
   • ido-mode
   • iedit
   • iflipb
   • imenu-list
   • indium
   • info
   • info-colors
   • interaction-log
   • ioccur
   • isearch, occur, etc.
   • ivy*
   • ivy-posframe
   • jira (org-jira)
   • journalctl-mode
   • js2-mode
   • julia
   • jupyter
   • kaocha-runner
   • keycast
   • line numbers (‘display-line-numbers-mode’ and global variant)
   • lsp-mode
   • lsp-ui
   • magit
   • magit-imerge
   • man
   • markdown-mode
   • markup-faces (‘adoc-mode’)
   • mentor
   • messages
   • minibuffer-line
   • minimap
   • modeline
   • mood-line
   • moody
   • mpdel
   • mu4e
   • mu4e-conversation
   • multiple-cursors
   • neotree
   • no-emoji
   • notmuch
   • num3-mode
   • nxml-mode
   • objed
   • orderless
   • org*
   • org-journal
   • org-noter
   • org-pomodoro
   • org-recur
   • org-roam
   • org-superstar
   • org-table-sticky-header
   • org-treescope
   • origami
   • outline-mode
   • outline-minor-faces
   • package (‘M-x list-packages’)
   • page-break-lines
   • paradox
   • paren-face
   • parrot
   • pass
   • persp-mode
   • perspective
   • phi-grep
   • phi-search
   • pkgbuild-mode
   • pomidor
   • powerline
   • powerline-evil
   • proced
   • prodigy
   • racket-mode
   • rainbow-blocks
   • rainbow-identifiers
   • rainbow-delimiters
   • rcirc
   • regexp-builder (also known as ‘re-builder’)
   • rg (rg.el)
   • ripgrep
   • rmail
   • ruler-mode
   • sallet
   • selectrum
   • semantic
   • sesman
   • shell-script-mode
   • show-paren-mode
   • side-notes
   • skewer-mode
   • smart-mode-line
   • smartparens
   • smerge
   • spaceline
   • speedbar
   • spell-fu
   • stripes
   • suggest
   • switch-window
   • swiper
   • swoop
   • sx
   • symbol-overlay
   • syslog-mode
   • table (built-in table.el)
   • telephone-line
   • term
   • tomatinho
   • transient (pop-up windows such as Magit’s)
   • trashed
   • treemacs
   • tty-menu
   • tuareg
   • typescript
   • undo-tree
   • vc (built-in mode line status for version control)
   • vc-annotate (‘C-x v g’)
   • vdiff
   • vimish-fold
   • visible-mark
   • visual-regexp
   • volatile-highlights
   • vterm
   • wcheck-mode
   • web-mode
   • wgrep
   • which-function-mode
   • which-key
   • whitespace-mode
   • window-divider-mode
   • winum
   • writegood-mode
   • woman
   • xah-elisp-mode
   • xref
   • xterm-color (and ansi-colors)
   • yaml-mode
   • yasnippet
   • ztree

   Plus many other miscellaneous faces that are provided by the upstream
GNU Emacs distribution.


File: modus-themes.info,  Node: Covered indirectly,  Next: Will NOT be supported,  Prev: Supported packages,  Up: Face coverage

6.2 Covered indirectly
======================

These do not require any extra styles because they are configured to
inherit from some basic faces.  Please confirm.

   • edit-indirect
   • evil-owl
   • perl-mode
   • php-mode
   • rjsx-mode
   • swift-mode


File: modus-themes.info,  Node: Will NOT be supported,  Prev: Covered indirectly,  Up: Face coverage

6.3 Will NOT be supported
=========================

I have thus far identified a single package that does fit into the
overarching objective of this project: solaire
(https://github.com/hlissner/emacs-solaire-mode).  It basically tries to
cast a less intense background on the main file-visiting buffers, so
that secondary elements like sidebars can have the default (pure
white/black) background.

   I will only cover this package if it ever supports the inverse
effect: less intense colors (but still accessible) for ancillary
interfaces and the intended styles for the content you are actually
working on.


File: modus-themes.info,  Node: Notes for individual packages,  Next: Contributing,  Prev: Face coverage,  Up: Top

7 Notes for individual packages
*******************************

This section covers information that may be of interest to users of
individual packages.

* Menu:

* Note on company-mode overlay pop-up::
* Note for ERC escaped color sequences::
* Note for powerline or spaceline::
* Note on shr colors::
* Note for Helm grep::
* Note on vc-annotate-background-mode::


File: modus-themes.info,  Node: Note on company-mode overlay pop-up,  Next: Note for ERC escaped color sequences,  Up: Notes for individual packages

7.1 Note on company-mode overlay pop-up
=======================================

By default, the ‘company-mode’ pop-up that lists completion candidates
is drawn using an overlay.  This creates alignment issues every time it
is placed above a piece of text that has a different height than the
default.

   The solution recommended by the project’s maintainer is to use an
alternative front-end for drawing the pop-up which uses child frames
instead of overlays.(1)(2)

   ---------- Footnotes ----------

   (1) <https://github.com/company-mode/company-mode/issues/1010>

   (2) <https://github.com/tumashu/company-posframe/>


File: modus-themes.info,  Node: Note for ERC escaped color sequences,  Next: Note for powerline or spaceline,  Prev: Note on company-mode overlay pop-up,  Up: Notes for individual packages

7.2 Note for ERC escaped color sequences
========================================

The built-in IRC client ‘erc’ has the ability to colorise any text using
escape sequences that start with ‘^C’ (inserted with ‘C-q C-c’) and are
followed by a number for the foreground and background.(1)  Possible
numbers are 0-15, with the first entry being the foreground and the
second the background, separated by a comma.  Like this ‘^C1,6’.  The
minimum setup is this:

     (add-to-list 'erc-modules 'irccontrols)
     (setq erc-interpret-controls-p t
           erc-interpret-mirc-color t)

   As this allows users to make arbitrary combinations, it is impossible
to guarantee a consistently high contrast ratio.  All we can we do is
provide guidance on the combinations that satisfy the accessibility
standard of the themes:

Modus Operandi
     Use foreground color 1 for all backgrounds from 2-15.  Like so:
     ‘C-q C-c1,N’ where ‘N’ is the background.

Modus Vivendi
     Use foreground color 0 for all backgrounds from 2-13.  Use
     foreground ‘1’ for backgrounds 14, 15.

   Colors 0 and 1 are white and black respectively.  So combine them
together, if you must.

   ---------- Footnotes ----------

   (1) This page explains the basics, though it is not specific to
Emacs: <https://www.mirc.com/colors.html>


File: modus-themes.info,  Node: Note for powerline or spaceline,  Next: Note on shr colors,  Prev: Note for ERC escaped color sequences,  Up: Notes for individual packages

7.3 Note for powerline or spaceline
===================================

Both Powerline and Spaceline package users will likely need to use the
command ‘powerline-reset’ whenever they make changes to their themes
and/or modeline setup.


File: modus-themes.info,  Node: Note on shr colors,  Next: Note for Helm grep,  Prev: Note for powerline or spaceline,  Up: Notes for individual packages

7.4 Note on shr colors
======================

Emacs’ HTML rendering mechanism (‘shr’) may need explicit configuration
to respect the theme’s colors instead of whatever specifications the
webpage provides.  Consult ‘C-h v shr-use-colors’.


File: modus-themes.info,  Node: Note for Helm grep,  Next: Note on vc-annotate-background-mode,  Prev: Note on shr colors,  Up: Notes for individual packages

7.5 Note for Helm grep
======================

There is one face from the Helm package that is meant to highlight the
matches of a grep or grep-like command (‘ag’ or ‘ripgrep’).  It is
‘helm-grep-match’.  However, this face can only apply when the user does
not pass ‘--color=always’ as a command-line option for their command.

   Here is the docstring for that face, which is defined in the
‘helm-grep.el’ library (view a library with ‘M-x find-library’).

     Face used to highlight grep matches.  Have no effect when grep
     backend use “–color=”

   The user must either remove ‘--color’ from the flags passed to the
grep function, or explicitly use ‘--color=never’ (or equivalent).  Helm
provides user-facing customization options for controlling the grep
function’s parameters, such as ‘helm-grep-default-command’ and
‘helm-grep-git-grep-command’.

   When ‘--color=always’ is in effect, the grep output will use red text
in bold letter forms to present the matching part in the list of
candidates.  That style still meets the contrast ratio target of >= 7:1
(accessibility standard WCAG AAA), because it draws the reference to
ANSI color number 1 (red) from the already-supported array of
‘ansi-color-names-vector’.


File: modus-themes.info,  Node: Note on vc-annotate-background-mode,  Prev: Note for Helm grep,  Up: Notes for individual packages

7.6 Note on vc-annotate-background-mode
=======================================

Due to the unique way ‘vc-annotate’ (‘C-x v g’) applies colors, support
for its background mode (‘vc-annotate-background-mode’) is disabled at
the theme level.

   Normally, such a drastic measure should not belong in a theme:
assuming the user’s preferences is bad practice.  However, it has been
deemed necessary in the interest of preserving color contrast
accessibility while still supporting a useful built-in tool.

   If there actually is a way to avoid such a course of action, without
prejudice to the accessibility standard of this project, then please
report as much or send patches (see *note Contributing::).


File: modus-themes.info,  Node: Contributing,  Next: Acknowledgements,  Prev: Notes for individual packages,  Up: Top

8 Contributing
**************

This section documents the canonical sources of the themes and the ways
in which you can contribute to their ongoing development.

* Menu:

* Sources of the themes::
* Issues you can help with::
* Merge requests::               Legal considerations for code patches


File: modus-themes.info,  Node: Sources of the themes,  Next: Issues you can help with,  Up: Contributing

8.1 Sources of the themes
=========================

The ‘modus-operandi’ and ‘modus-vivendi’ themes are built into Emacs.
Currently they are in the project’s ‘master’ branch, which is tracking
the next development release target.

   The source code of the themes is available on Gitlab
(https://gitlab.com/protesilaos/modus-themes/), for the time being.  A
mirror on Github (https://github.com/protesilaos/modus-themes/) is also
on offer.

   An HTML version of this manual is available as an extension to the
author’s personal website (https://protesilaos.com/modus-themes/) (does
not rely on any non-free code).


File: modus-themes.info,  Node: Issues you can help with,  Next: Merge requests,  Prev: Sources of the themes,  Up: Contributing

8.2 Issues you can help with
============================

A few tasks you can help with:

   • Suggest refinements to packages that are covered.
   • Report packages not covered thus far.
   • Report bugs, inconsistencies, shortcomings.
   • Help expand the documentation of covered-but-not-styled packages.
   • Suggest refinements to the color palette.
   • Help expand this document or any other piece of documentation.
   • Merge requests for code refinements.

   *Note Patches require copyright assignment to the FSF: Merge
requests.

   It would be great if your feedback also includes some screenshots,
GIFs, or short videos, as well as further instructions to reproduce a
given setup.  Though this is not a requirement.

   Whatever you do, bear in mind the overarching objective of the Modus
themes: to keep a contrast ratio that is greater or equal to 7:1 between
background and foreground colors.  If a compromise is ever necessary
between aesthetics and accessibility, it shall always be made in the
interest of the latter.


File: modus-themes.info,  Node: Merge requests,  Prev: Issues you can help with,  Up: Contributing

8.3 Patches require copyright assignment to the FSF
===================================================

Code contributions are most welcome.  For any major edit (more than 15
lines, or so, in aggregate per person), you need to make a copyright
assignment to the Free Software Foundation.  This is necessary because
the themes are part of the upstream Emacs distribution: the FSF must at
all times be in a position to enforce the GNU General Public License.

   Copyright assignment is a simple process.  Check the request form
below (please adapt it accordingly).  You must write an email to the
address mentioned in the form and then wait for the FSF to send you a
legal agreement.  Sign the document and file it back to them.  This
could all happen via email and take about a week.  You are encouraged to
go through this process.  You only need to do it once.  It will allow
you to make contributions to Emacs in general.

     Please email the following information to assign@gnu.org, and we
     will send you the assignment form for your past and future changes.

     Please use your full legal name (in ASCII characters) as the subject
     line of the message.
     ----------------------------------------------------------------------
     REQUEST: SEND FORM FOR PAST AND FUTURE CHANGES

     [What is the name of the program or package you're contributing to?]

     GNU Emacs

     [Did you copy any files or text written by someone else in these changes?
     Even if that material is free software, we need to know about it.]

     Copied a few snippets from the same files I edited.  Their author,
     Protesilaos Stavrou, has already assigned copyright to the Free Software
     Foundation.

     [Do you have an employer who might have a basis to claim to own
     your changes?  Do you attend a school which might make such a claim?]


     [For the copyright registration, what country are you a citizen of?]


     [What year were you born?]


     [Please write your email address here.]


     [Please write your postal address here.]





     [Which files have you changed so far, and which new files have you written
     so far?]

     Changed a couple of themes that are part of the Emacs source code:

     ./etc/themes/modus-operandi-theme.el
     ./etc/themes/modus-vivendi-theme.el


File: modus-themes.info,  Node: Acknowledgements,  Next: Meta,  Prev: Contributing,  Up: Top

9 Acknowledgements
******************

The Modus themes are a collective effort.  Every contribution counts.

Author/maintainer
     Protesilaos Stavrou.

Code contributions
     Anders Johansson, Basil L.  Contovounesios, Markus Beppler, Matthew
     Stevenson.

Ideas and user feedback
     Aaron Jensen, Adam Spiers, Alex Griffin, Alex Peitsinis, Alexey
     Shmalko, Anders Johansson, André Alexandre Gomes, Arif Rezai, Basil
     L.  Contovounesios, Damien Cassou, Dario Gjorgjevski, David
     Edmondson, Davor Rotim, Divan Santana, Gerry Agbobada, Gianluca
     Recchia, Iris Garcia, Len Trigg, Manuel Uberti, Mark Burton, Markus
     Beppler, Michael Goldenberg, Murilo Pereira, Nicolas De Jaeghere,
     Pierre Téchoueyres, Roman Rudakov, Ryan Phillips, Shreyas Ragavan,
     Tassilo Horn, Thibaut Verron, Trey Merkley, Uri Sharf, Utkarsh
     Singh, Vincent Foley.  As well as users: Ben, Fourchaux, Fredrik,
     Moesasji, Nick, TheBlob42, dinko, doolio, jixiuf, okamsn, tycho
     garen.

Packaging
     Dhavan Vaidya (Debian), Stefan Kangas (core Emacs), Stefan Monnier
     (GNU Elpa).

Inspiration for certain features
     Fabrice Niessen (leuven-theme), Bozhidar Batsov (zenburn-theme).


File: modus-themes.info,  Node: Meta,  Next: External projects (ports),  Prev: Acknowledgements,  Up: Top

10 Meta
*******

If you are curious about the principles that govern the development of
this project read the essay On the design of the Modus themes
(https://protesilaos.com/codelog/2020-03-17-design-modus-themes-emacs/)
(2020-03-17).

   Here are some more publications for those interested in the kind of
work that goes into this project (sometimes the commits also include
details of this sort):

   • Modus Operandi theme subtle palette review
     (https://protesilaos.com/codelog/2020-05-10-modus-operandi-palette-review/)
     (2020-05-10)
   • Modus Vivendi theme subtle palette review
     (https://protesilaos.com/codelog/2020-06-13-modus-vivendi-palette-review/)
     (2020-06-13)
   • Modus themes: new “faint syntax” option
     (https://protesilaos.com/codelog/2020-07-04-modus-themes-faint-colours/)
     (2020-07-04)
   • Modus themes: major review of “nuanced” colours
     (https://protesilaos.com/codelog/2020-07-08-modus-themes-nuanced-colours/)
     (2020-07-08)
   • Modus themes: review of blue colours
     (https://protesilaos.com/codelog/2020-09-14-modus-themes-review-blues/)
     (2020-09-14)

   And here are the canonical sources for this project’s documentation:

Manual
     <https://protesilaos.com/modus-themes>
Change Log
     <https://protesilaos.com/modus-themes-changelog>
Screenshots
     <https://protesilaos.com/modus-themes-pictures>


File: modus-themes.info,  Node: External projects (ports),  Next: GNU Free Documentation License,  Prev: Meta,  Up: Top

11 External projects (ports)
****************************

The present section documents projects that extend the scope of the
Modus themes.  The following list will be updated whenever relevant
information is brought to my attention.  If you already have or intend
to produce such a port, feel welcome to contact me
(https://protesilaos.com/contact).

Modus exporter
     This is an Elisp library written by Simon Pugnet
     (https://github.com/polaris64/modus-exporter).  Licensed under the
     terms of the GNU General Public License.  It is meant to capture
     the color values of the active Modus theme (Operandi or Vivendi)
     and output it as a valid theme for some other application.


File: modus-themes.info,  Node: GNU Free Documentation License,  Prev: External projects (ports),  Up: Top

Appendix A GNU Free Documentation License
*****************************************

                     GNU Free Documentation License
                      Version 1.3, 3 November 2008


      Copyright (C) 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
          <https://fsf.org/>
      Everyone is permitted to copy and distribute verbatim copies
      of this license document, but changing it is not allowed.

     0. PREAMBLE

     The purpose of this License is to make a manual, textbook, or other
     functional and useful document "free" in the sense of freedom: to
     assure everyone the effective freedom to copy and redistribute it,
     with or without modifying it, either commercially or noncommercially.
     Secondarily, this License preserves for the author and publisher a way
     to get credit for their work, while not being considered responsible
     for modifications made by others.

     This License is a kind of "copyleft", which means that derivative
     works of the document must themselves be free in the same sense.  It
     complements the GNU General Public License, which is a copyleft
     license designed for free software.

     We have designed this License in order to use it for manuals for free
     software, because free software needs free documentation: a free
     program should come with manuals providing the same freedoms that the
     software does.  But this License is not limited to software manuals;
     it can be used for any textual work, regardless of subject matter or
     whether it is published as a printed book.  We recommend this License
     principally for works whose purpose is instruction or reference.


     1. APPLICABILITY AND DEFINITIONS

     This License applies to any manual or other work, in any medium, that
     contains a notice placed by the copyright holder saying it can be
     distributed under the terms of this License.  Such a notice grants a
     world-wide, royalty-free license, unlimited in duration, to use that
     work under the conditions stated herein.  The "Document", below,
     refers to any such manual or work.  Any member of the public is a
     licensee, and is addressed as "you".  You accept the license if you
     copy, modify or distribute the work in a way requiring permission
     under copyright law.

     A "Modified Version" of the Document means any work containing the
     Document or a portion of it, either copied verbatim, or with
     modifications and/or translated into another language.

     A "Secondary Section" is a named appendix or a front-matter section of
     the Document that deals exclusively with the relationship of the
     publishers or authors of the Document to the Document's overall
     subject (or to related matters) and contains nothing that could fall
     directly within that overall subject.  (Thus, if the Document is in
     part a textbook of mathematics, a Secondary Section may not explain
     any mathematics.)  The relationship could be a matter of historical
     connection with the subject or with related matters, or of legal,
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     The "Invariant Sections" are certain Secondary Sections whose titles
     are designated, as being those of Invariant Sections, in the notice
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     The "Cover Texts" are certain short passages of text that are listed,
     as Front-Cover Texts or Back-Cover Texts, in the notice that says that
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     A "Transparent" copy of the Document means a machine-readable copy,
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     The "Title Page" means, for a printed book, the title page itself,
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     The "publisher" means any person or entity that distributes copies of
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     A section "Entitled XYZ" means a named subunit of the Document whose
     title either is precisely XYZ or contains XYZ in parentheses following
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     The Document may include Warranty Disclaimers next to the notice which
     states that this License applies to the Document.  These Warranty
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     2. VERBATIM COPYING

     You may copy and distribute the Document in any medium, either
     commercially or noncommercially, provided that this License, the
     copyright notices, and the license notice saying this License applies
     to the Document are reproduced in all copies, and that you add no
     other conditions whatsoever to those of this License.  You may not use
     technical measures to obstruct or control the reading or further
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     compensation in exchange for copies.  If you distribute a large enough
     number of copies you must also follow the conditions in section 3.

     You may also lend copies, under the same conditions stated above, and
     you may publicly display copies.


     3. COPYING IN QUANTITY

     If you publish printed copies (or copies in media that commonly have
     printed covers) of the Document, numbering more than 100, and the
     Document's license notice requires Cover Texts, you must enclose the
     copies in covers that carry, clearly and legibly, all these Cover
     Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on
     the back cover.  Both covers must also clearly and legibly identify
     you as the publisher of these copies.  The front cover must present
     the full title with all words of the title equally prominent and
     visible.  You may add other material on the covers in addition.
     Copying with changes limited to the covers, as long as they preserve
     the title of the Document and satisfy these conditions, can be treated
     as verbatim copying in other respects.

     If the required texts for either cover are too voluminous to fit
     legibly, you should put the first ones listed (as many as fit
     reasonably) on the actual cover, and continue the rest onto adjacent
     pages.

     If you publish or distribute Opaque copies of the Document numbering
     more than 100, you must either include a machine-readable Transparent
     copy along with each Opaque copy, or state in or with each Opaque copy
     a computer-network location from which the general network-using
     public has access to download using public-standard network protocols
     a complete Transparent copy of the Document, free of added material.
     If you use the latter option, you must take reasonably prudent steps,
     when you begin distribution of Opaque copies in quantity, to ensure
     that this Transparent copy will remain thus accessible at the stated
     location until at least one year after the last time you distribute an
     Opaque copy (directly or through your agents or retailers) of that
     edition to the public.

     It is requested, but not required, that you contact the authors of the
     Document well before redistributing any large number of copies, to
     give them a chance to provide you with an updated version of the
     Document.


     4. MODIFICATIONS

     You may copy and distribute a Modified Version of the Document under
     the conditions of sections 2 and 3 above, provided that you release
     the Modified Version under precisely this License, with the Modified
     Version filling the role of the Document, thus licensing distribution
     and modification of the Modified Version to whoever possesses a copy
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     A. Use in the Title Page (and on the covers, if any) a title distinct
        from that of the Document, and from those of previous versions
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        of the Document).  You may use the same title as a previous version
        if the original publisher of that version gives permission.
     B. List on the Title Page, as authors, one or more persons or entities
        responsible for authorship of the modifications in the Modified
        Version, together with at least five of the principal authors of the
        Document (all of its principal authors, if it has fewer than five),
        unless they release you from this requirement.
     C. State on the Title page the name of the publisher of the
        Modified Version, as the publisher.
     D. Preserve all the copyright notices of the Document.
     E. Add an appropriate copyright notice for your modifications
        adjacent to the other copyright notices.
     F. Include, immediately after the copyright notices, a license notice
        giving the public permission to use the Modified Version under the
        terms of this License, in the form shown in the Addendum below.
     G. Preserve in that license notice the full lists of Invariant Sections
        and required Cover Texts given in the Document's license notice.
     H. Include an unaltered copy of this License.
     I. Preserve the section Entitled "History", Preserve its Title, and add
        to it an item stating at least the title, year, new authors, and
        publisher of the Modified Version as given on the Title Page.  If
        there is no section Entitled "History" in the Document, create one
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        given on its Title Page, then add an item describing the Modified
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     J. Preserve the network location, if any, given in the Document for
        public access to a Transparent copy of the Document, and likewise
        the network locations given in the Document for previous versions
        it was based on.  These may be placed in the "History" section.
        You may omit a network location for a work that was published at
        least four years before the Document itself, or if the original
        publisher of the version it refers to gives permission.
     K. For any section Entitled "Acknowledgements" or "Dedications",
        Preserve the Title of the section, and preserve in the section all
        the substance and tone of each of the contributor acknowledgements
        and/or dedications given therein.
     L. Preserve all the Invariant Sections of the Document,
        unaltered in their text and in their titles.  Section numbers
        or the equivalent are not considered part of the section titles.
     M. Delete any section Entitled "Endorsements".  Such a section
        may not be included in the Modified Version.
     N. Do not retitle any existing section to be Entitled "Endorsements"
        or to conflict in title with any Invariant Section.
     O. Preserve any Warranty Disclaimers.

     If the Modified Version includes new front-matter sections or
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     copied from the Document, you may at your option designate some or all
     of these sections as invariant.  To do this, add their titles to the
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     You may add a section Entitled "Endorsements", provided it contains
     nothing but endorsements of your Modified Version by various
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     been approved by an organization as the authoritative definition of a
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     The author(s) and publisher(s) of the Document do not by this License
     give permission to use their names for publicity for or to assert or
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     5. COMBINING DOCUMENTS

     You may combine the Document with other documents released under this
     License, under the terms defined in section 4 above for modified
     versions, provided that you include in the combination all of the
     Invariant Sections of all of the original documents, unmodified, and
     list them all as Invariant Sections of your combined work in its
     license notice, and that you preserve all their Warranty Disclaimers.

     The combined work need only contain one copy of this License, and
     multiple identical Invariant Sections may be replaced with a single
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     Make the same adjustment to the section titles in the list of
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     In the combination, you must combine any sections Entitled "History"
     in the various original documents, forming one section Entitled
     "History"; likewise combine any sections Entitled "Acknowledgements",
     and any sections Entitled "Dedications".  You must delete all sections
     Entitled "Endorsements".


     6. COLLECTIONS OF DOCUMENTS

     You may make a collection consisting of the Document and other
     documents released under this License, and replace the individual
     copies of this License in the various documents with a single copy
     that is included in the collection, provided that you follow the rules
     of this License for verbatim copying of each of the documents in all
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     You may extract a single document from such a collection, and
     distribute it individually under this License, provided you insert a
     copy of this License into the extracted document, and follow this
     License in all other respects regarding verbatim copying of that
     document.


     7. AGGREGATION WITH INDEPENDENT WORKS

     A compilation of the Document or its derivatives with other separate
     and independent documents or works, in or on a volume of a storage or
     distribution medium, is called an "aggregate" if the copyright
     resulting from the compilation is not used to limit the legal rights
     of the compilation's users beyond what the individual works permit.
     When the Document is included in an aggregate, this License does not
     apply to the other works in the aggregate which are not themselves
     derivative works of the Document.

     If the Cover Text requirement of section 3 is applicable to these
     copies of the Document, then if the Document is less than one half of
     the entire aggregate, the Document's Cover Texts may be placed on
     covers that bracket the Document within the aggregate, or the
     electronic equivalent of covers if the Document is in electronic form.
     Otherwise they must appear on printed covers that bracket the whole
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     8. TRANSLATION

     Translation is considered a kind of modification, so you may
     distribute translations of the Document under the terms of section 4.
     Replacing Invariant Sections with translations requires special
     permission from their copyright holders, but you may include
     translations of some or all Invariant Sections in addition to the
     original versions of these Invariant Sections.  You may include a
     translation of this License, and all the license notices in the
     Document, and any Warranty Disclaimers, provided that you also include
     the original English version of this License and the original versions
     of those notices and disclaimers.  In case of a disagreement between
     the translation and the original version of this License or a notice
     or disclaimer, the original version will prevail.

     If a section in the Document is Entitled "Acknowledgements",
     "Dedications", or "History", the requirement (section 4) to Preserve
     its Title (section 1) will typically require changing the actual
     title.


     9. TERMINATION

     You may not copy, modify, sublicense, or distribute the Document
     except as expressly provided under this License.  Any attempt
     otherwise to copy, modify, sublicense, or distribute it is void, and
     will automatically terminate your rights under this License.

     However, if you cease all violation of this License, then your license
     from a particular copyright holder is reinstated (a) provisionally,
     unless and until the copyright holder explicitly and finally
     terminates your license, and (b) permanently, if the copyright holder
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     Moreover, your license from a particular copyright holder is
     reinstated permanently if the copyright holder notifies you of the
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     received notice of violation of this License (for any work) from that
     copyright holder, and you cure the violation prior to 30 days after
     your receipt of the notice.

     Termination of your rights under this section does not terminate the
     licenses of parties who have received copies or rights from you under
     this License.  If your rights have been terminated and not permanently
     reinstated, receipt of a copy of some or all of the same material does
     not give you any rights to use it.


     10. FUTURE REVISIONS OF THIS LICENSE

     The Free Software Foundation may publish new, revised versions of the
     GNU Free Documentation License from time to time.  Such new versions
     will be similar in spirit to the present version, but may differ in
     detail to address new problems or concerns.  See
     https://www.gnu.org/licenses/.

     Each version of the License is given a distinguishing version number.
     If the Document specifies that a particular numbered version of this
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     11. RELICENSING

     "Massive Multiauthor Collaboration Site" (or "MMC Site") means any
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     corporation with a principal place of business in San Francisco,
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     "Incorporate" means to publish or republish a Document, in whole or in
     part, as part of another Document.

     An MMC is "eligible for relicensing" if it is licensed under this
     License, and if all works that were first published under this License
     somewhere other than this MMC, and subsequently incorporated in whole or
     in part into the MMC, (1) had no cover texts or invariant sections, and
     (2) were thus incorporated prior to November 1, 2008.

     The operator of an MMC Site may republish an MMC contained in the site
     under CC-BY-SA on the same site at any time before August 1, 2009,
     provided the MMC is eligible for relicensing.


     ADDENDUM: How to use this License for your documents

     To use this License in a document you have written, include a copy of
     the License in the document and put the following copyright and
     license notices just after the title page:

         Copyright (c)  YEAR  YOUR NAME.
         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, no Front-Cover Texts, and no Back-Cover Texts.
         A copy of the license is included in the section entitled "GNU
         Free Documentation License".

     If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts,
     replace the "with...Texts." line with this:

         with the Invariant Sections being LIST THEIR TITLES, with the
         Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST.

     If you have Invariant Sections without Cover Texts, or some other
     combination of the three, merge those two alternatives to suit the
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     If your document contains nontrivial examples of program code, we
     recommend releasing these examples in parallel under your choice of
     free software license, such as the GNU General Public License,
     to permit their use in free software.



Tag Table:
Node: Top232
Node: Overview4016
Node: How do the themes look like5314
Node: Learn about the latest changes5801
Node: Installation6183
Node: Install from the archives6762
Node: Install on GNU/Linux7281
Node: Debian 11 Bullseye7726
Node: GNU Guix8135
Node: Enable and load8498
Node: Load automatically9061
Node: Load at a given time or at sunset/sunrise9874
Ref: Load at a given time or at sunset/sunrise-Footnote-111917
Ref: Load at a given time or at sunset/sunrise-Footnote-212051
Node: Toggle between the themes on demand12134
Node: Configure options prior to loading13010
Ref: Configure options prior to loading-Footnote-115692
Node: Customization Options15875
Node: Bold constructs17613
Node: Slanted constructs18760
Node: Syntax highlighting19351
Node: No mixed fonts20174
Node: Link underline21192
Node: Command prompts21674
Node: Mode line22477
Node: Completion UIs25097
Node: Fringes27007
Node: Line highlighting27769
Node: Matching parentheses28436
Node: Diffs29079
Node: Org mode blocks30867
Node: Heading styles32368
Node: Scaled headings36118
Node: Scaled heading sizes36735
Node: Headings' font38568
Node: Advanced customization (do-it-yourself)39192
Node: Tweak colors (DIY)40196
Node: Font configs (DIY)43825
Ref: Font configs (DIY)-Footnote-146412
Ref: Font configs (DIY)-Footnote-246599
Node: Org user faces (DIY)46821
Node: Face coverage49979
Node: Supported packages50481
Node: Covered indirectly56523
Node: Will NOT be supported56925
Node: Notes for individual packages57641
Node: Note on company-mode overlay pop-up58127
Ref: Note on company-mode overlay pop-up-Footnote-158790
Ref: Note on company-mode overlay pop-up-Footnote-258857
Node: Note for ERC escaped color sequences58912
Ref: Note for ERC escaped color sequences-Footnote-160334
Node: Note for powerline or spaceline60444
Node: Note on shr colors60860
Node: Note for Helm grep61269
Node: Note on vc-annotate-background-mode62714
Node: Contributing63566
Node: Sources of the themes63985
Node: Issues you can help with64727
Node: Merge requests65912
Node: Acknowledgements68330
Node: Meta69633
Node: External projects (ports)71140
Node: GNU Free Documentation License71962

End Tag Table


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