# Table of Contents

1.  [Requirements](#requirements)
2.  [Installation](#installation)
3.  [Packages](#packages)
    1.  [Org](#org)
    2.  [Multiple cursors](#multiple-cursors)
    3.  [Other packages](#other-packages)
4.  [Information](#information)
5.  [Errors](#errors)
6.  [TODOs](#todos)

This is an ongoing evolution of Emacs configuration files, inspired by
a bunch of online resources.


<a id="requirements"></a>

# Requirements

external packages:

    # fonts (opensans in latex article preamble)
    yay -S ttf-inconsolata ttf-opensans
    # spelling flyspell-buffer
    yay -S aspell aspell-de aspell-en \
    hunspell hunspell-de hunspell-en_US \
    languagetool
    # org-mode latex-mode ox-latex
    yay -S biber bibtex2html texlive-bibtexextra texlive-core \
    texlive-fontsextra texlive-formatsextra texlive-langgreek \
    texlive-langjapanese texlive-latexextra texlive-pgf-pie \
    texlive-pgfopts texlive-pictures texlive-pstricks \
    texlive-publishers texlive-science texlive-slashbox
    # ledger-mode
    yay -S ledger
    # python-mode
    yay -S python-pylint
    # emacs-application-famework EAF
    yay -S --needed git nodejs aria2 libreoffice wmctrl xdotool jre-openjdk \
    python-pyqt5 python-pyqt5-sip python-pyqtwebengine python-qrcode \
    python-feedparser python-dbus python-pyinotify python-markdown \
    python-grip filebrowser-bin python-epc
    # other
    yay -S ditaa plantuml r

Optional package for EAF see in Installation.


<a id="installation"></a>

# Installation

Install into `~/.config/emacs` (must be empty)

    git clone http://gogs.weseng.de/daniel/emacs.git ~/.config/emacs

or copy all files of this directory into your ~/.config/emacs directory

-   for Emacs version < 27 create symbolic link to the init file
-   `ln -s ~/.config/emacs/init ~/.emacs` (or `~/.emacs.el`,
    `~/.emacs.d/init.el`)

LaTeX sytling files: copy/merge the `texmf` directory into your home
directory `~/texmf`

optional for EAF

    yay --editmenu -S mupdf python-pymupdf

edit `PGKBUILD` file for `python-pymupdf` to:

    prepare() {
      cd "${_name}-${pkgver}"
      patch --forward --strip=1 --input="${HOME}/.config/emacs/scripts/fix-pymupdf-library-linking-for-arcolinux.patch"
    }


<a id="packages"></a>

# Packages

<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<caption class="t-above"><span class="table-number">Table 1:</span> General key bindings and functions</caption>

<colgroup>
<col  class="org-left" />

<col  class="org-left" />

<col  class="org-left" />
</colgroup>
<tbody>
<tr>
<td class="org-left">M-&gt;</td>
<td class="org-left">end-of-buffer</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">M-&lt;</td>
<td class="org-left">beginning-of-buffer</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">C-x h</td>
<td class="org-left">mark-whole-buffer</td>
<td class="org-left">mark the whole buffer</td>
</tr>


<tr>
<td class="org-left">C-x TAB</td>
<td class="org-left">indent-rigidly</td>
<td class="org-left">indent selected region</td>
</tr>


<tr>
<td class="org-left">C-x RET f</td>
<td class="org-left">set-buffer-file-coding-system</td>
<td class="org-left">e. g. set to utf-8</td>
</tr>


<tr>
<td class="org-left">&#xa0;</td>
<td class="org-left">decode-coding-region</td>
<td class="org-left">e. g. decode to utf-8 (郭富城Aaron Kwok)</td>
</tr>


<tr>
<td class="org-left">&#xa0;</td>
<td class="org-left">diff-buffer-with-file</td>
<td class="org-left">show a diff between buffer and file</td>
</tr>


<tr>
<td class="org-left">C-h v</td>
<td class="org-left">counsel-describe-variable</td>
<td class="org-left">help text of variable</td>
</tr>


<tr>
<td class="org-left">C-h f</td>
<td class="org-left">counsel-describe-funtion</td>
<td class="org-left">help text of function</td>
</tr>


<tr>
<td class="org-left">C-r</td>
<td class="org-left">query-replace-regexp</td>
<td class="org-left">replace text. (former isearch-backward)</td>
</tr>


<tr>
<td class="org-left">C-x C-b</td>
<td class="org-left">ibuffer</td>
<td class="org-left">list buffers (former list-buffers)</td>
</tr>


<tr>
<td class="org-left">C-x &vert;</td>
<td class="org-left">toggle-window-split</td>
<td class="org-left">toggle horizontal/vertical 2 window split</td>
</tr>


<tr>
<td class="org-left">M-up</td>
<td class="org-left">move-line-up</td>
<td class="org-left">move current line up</td>
</tr>


<tr>
<td class="org-left">M-down</td>
<td class="org-left">move-line-down</td>
<td class="org-left">move current line down</td>
</tr>


<tr>
<td class="org-left">mouse-6</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">scroll right</td>
</tr>


<tr>
<td class="org-left">mouse-7</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">scroll left</td>
</tr>


<tr>
<td class="org-left">mouse-8</td>
<td class="org-left">previous-buffer</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">mouse-9</td>
<td class="org-left">next-buffer</td>
<td class="org-left">&#xa0;</td>
</tr>
</tbody>
</table>


<a id="org"></a>

## Org

<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<caption class="t-above"><span class="table-number">Table 2:</span> Org key bindings and functions</caption>

<colgroup>
<col  class="org-left" />

<col  class="org-left" />

<col  class="org-left" />
</colgroup>
<tbody>
<tr>
<td class="org-left">C-c &vert;</td>
<td class="org-left">org-table-create-or-convert-from-region</td>
<td class="org-left">convert seperator 1. TAB, 2. comma, 3. space</td>
</tr>


<tr>
<td class="org-left">C-u C-c &vert;</td>
<td class="org-left">org-table-create-or-convert-from-region</td>
<td class="org-left">convert using comma (CSV) seperator</td>
</tr>


<tr>
<td class="org-left">C-u C-u C-c &vert;</td>
<td class="org-left">org-table-create-or-convert-from-region</td>
<td class="org-left">convert using TAB</td>
</tr>


<tr>
<td class="org-left">C-u N C-c &vert;</td>
<td class="org-left">org-table-create-or-convert-from-region</td>
<td class="org-left">convert using N spaces</td>
</tr>


<tr>
<td class="org-left">C-u REGEX C-c &vert;</td>
<td class="org-left">org-table-create-or-convert-from-region</td>
<td class="org-left">convert using regex to match seperator</td>
</tr>


<tr>
<td class="org-left">C-c C-x \</td>
<td class="org-left">org-toggle-pretty-entries</td>
<td class="org-left">e. g. displays <code>\pm</code> as ±</td>
</tr>


<tr>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">Org table</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">S-right</td>
<td class="org-left">org-shiftright</td>
<td class="org-left">move a single cell right</td>
</tr>


<tr>
<td class="org-left">S-left</td>
<td class="org-left">org-shiftleft</td>
<td class="org-left">move a single cell left</td>
</tr>


<tr>
<td class="org-left">C-c SPC</td>
<td class="org-left">org-table-blank-field</td>
<td class="org-left">clear cell</td>
</tr>


<tr>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">Org src block</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">C-c C-v t</td>
<td class="org-left">org-babel-tangle</td>
<td class="org-left">create a file with the content of the block, use in header: :tangle filename</td>
</tr>


<tr>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">Org export</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">&#xa0;</td>
</tr>


<tr>
<td class="org-left">f5</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">in org export to html</td>
</tr>


<tr>
<td class="org-left">f6</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">in org export to LaTeX</td>
</tr>
</tbody>
</table>

**Important**

-   For **Gnuplot** source blocks: Do not use `%` inside Gnuplot source
    block but `\%` or in format command `\%%`
    -   % starts a comment in LaTeX and therefore stops further
        interpretations like a closing bracket `}` etc.
        -   Gnuplot graphics are imported as .tex (text, axis, legend) and
            .eps (figure) files.
    -   `\%` `\%%` can also be used for HTML SVG export

Links

-   <https://tex.stackexchange.com/questions/167583/include-custom-file-into-header-with-org-mode/201674>
-   <https://orgmode.org/manual/LaTeX-specific-export-settings.html>


<a id="multiple-cursors"></a>

## Multiple cursors

<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<caption class="t-above"><span class="table-number">Table 3:</span> Multiple cursors key bindings and functions</caption>

<colgroup>
<col  class="org-left" />

<col  class="org-left" />

<col  class="org-left" />
</colgroup>
<tbody>
<tr>
<td class="org-left">M-m s m a</td>
<td class="org-left">mc/mark-all-dwim</td>
<td class="org-left">try to mark all at point</td>
</tr>


<tr>
<td class="org-left">C-v</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">jump to next cursor</td>
</tr>


<tr>
<td class="org-left">M-v</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">jump to previous cursor</td>
</tr>


<tr>
<td class="org-left">C-&rsquo;</td>
<td class="org-left">&#xa0;</td>
<td class="org-left">hide/unhide lines without a cursor</td>
</tr>
</tbody>
</table>


<a id="other-packages"></a>

## Other packages

-   **rainbow-mode.el:** <https://elpa.gnu.org/packages/rainbow-mode.html>
    rainbow-mode is a minor mode for Emacs which displays strings representing
    colors with the color they represent as background.


<a id="information"></a>

# Information

Interlock symlinks and auto-save files.
Be aware that symbolic links of the form “.#\*” are not auto-save files
but interlocks to prevent the simultaneous editing of the same
file. See [Interlocking](https://www.emacswiki.org/info-ref?find=Interlocking) in the [EmacsManual](https://www.emacswiki.org/emacs/EmacsManual) for details.


<a id="errors"></a>

# Errors

-   failed execution of bibtex2html
    -   see bib2htmlxxxxxx.blg for errors, e.g.
        -   I couldn&rsquo;t open style file acmu.bst
    -   copy/merge the texmf directory into your home directory.
-   when using this in an Org mode buffer:
    `#+HEADER: :fit yes :imagemagick yes :iminoptions -density 300`
    -   can leads to:
        -   convert: attempt to perform an operation not allowed by the security policy \`gs&rsquo; @ error/delegate.c/ExternalDelegateCommand/378.
        -   convert: no images defined \`DESY<sub>logo</sub><sub>tikz.png</sub>&rsquo; @ error/convert.c/ConvertImageCommand/3282.
    -   edit `/etc/ImageMagick-7/policy.xml` and comment out
        -   `<policy domain="delegate" rights="none" pattern="gs" />`


<a id="todos"></a>

# TODOs

-   Org / global configuration
    -   Page formatting
        -   Modify HTML styling
            -   Printed page layout, white styled figures
    -   Custom export function for HTML and \(\LaTeX\), with;
        -   `Shift` - `<f5>`, `Shift` - `<f6>` with open file
    -   delete temp. generated export files
-   Figures
    -   Gnuplot
        -   plot transposed files/tables
        -   preamble in function and call this function for every gnuplot block either
            manually or automatically with a hook?!
-   Tables
    -   Wrap Table in div element. For smartphone scrolling.
-   Table of contents
    -   \(\LaTeX\); currently headers with no-number property means not included in TOC
    -   HTML; currently generated list, like lot and lol, are not included in toc
        but own headers without numbers are.
-   Equation cancel/strike out with color line
    -   hcancel[color]{}
    -   Example: `\(\hcancel[red]{f_{X_2}(x_2)}}\)`
    -   Definition:
        -   Preamle: `#+LATEX_HEADER: \usepackage{cancel}`   
            `#+LATEX_HEADER: \newcommand\hcancel[2][black]{\setbox0=\hbox{$#2$}%`   
            `#+LATEX_HEADER: \rlap{\raisebox{.45\ht0}{\textcolor{#1}{\rule{\wd0}{1pt}}}}#2}`
        -   `hcancel: [\"{\\\\setbox0=\\\\hbox{$#2$}\\\\rlap{\\\\raisebox{.45\\\\ht0}{\\\\textcolor{#1}{\\\\rule{\\\\wd0}{1pt}}}}#2}\",2]`
            
                MathJax.Ajax.config.path[\"Contrib\"] = \"https://cdn.mathjax.org/mathjax/contrib\";
                MathJax.Hub.Register.StartupHook(\"TeX Jax Ready\",function () {
                    MathJax.Hub.Insert(MathJax.InputJax.TeX.Definitions.macros,{
                        cancel: [\"Extension\",\"cancel\"],
                        bcancel: [\"Extension\",\"cancel\"],
                        xcancel: [\"Extension\",\"cancel\"],
                        cancelto: [\"Extension\",\"cancel\"]
                    });
                });