remove everything except Jekyll theme stuff

I tagged the previous commit to explain what's going on.

3 files changed, 0 insertions, 149 deletions

diff --git a/_notes/bash.md b/_notes/bash.md
deleted file mode 100644
index 353f011..0000000
--- a/_notes/bash.md
+++ /dev/null
@@ -1,66 +0,0 @@
----
-title: GNU bash
----
-(Associative) arrays
---------------------
-
-### Declaration
-
-`"${#xs[@]}"` doesn't work with `nounset` if `xs` wasn't defined, i.e. was
-declared with either of
-
-    local -a xs
-    declare -a xs
-    local -A xs
-    declare -A xs
-
-Therefore, if you want to extract the length of an array, append `=()` to the
-statements above.
-
-    local -a xs=()
-    declare -a xs=()
-    ...
-
-And now `"${#xs[@]}"` works with `nounset`.
-It doesn't affect expansion (see below) though.
-
-### Expansion
-
-#### Do
-
-    func ${arr[@]+"${arr[@]}"}
-
-#### Don't
-
-    func "${arr[@]}"                # Doesn't work with `nounset`.
-    func "${arr[@]+"${arr[@]}"}"    # Doesn't work properly with `declare -a arr=('')`.
-
-### `unset`
-
-#### Do
-
-    unset -v 'arr[x]'
-    unset -v 'arr[$i]'
-
-#### Don't
-
-    unset -v arr[x]         # May break due to globbing.
-    unset -v arr[$i]        # The same as above + a possible problem with quotation.
-    unset -v 'arr["x"]'     # Doesn't work for some reason.
-    unset -v 'arr["]"]'     # The same as above; just highlighting the problem with funny characters in array indices.
-    unset -v 'arr["$i"]'    # Also rejected.
-
-    # An insightful discussion on the topic: https://lists.gnu.org/archive/html/help-bash/2016-09/msg00020.html.
-
-`errexit`
----------
-
-### Do
-
-    bar_output="$( bar )"
-    foo "$bar_output"
-
-### Don't
-
-    foo "$( bar )"    # With `errexit`, foo will still get executed.
-                      # I don't know why.
diff --git a/_notes/latex.md b/_notes/latex.md
deleted file mode 100644
index c131efe..0000000
--- a/_notes/latex.md
+++ /dev/null
@@ -1,39 +0,0 @@
----
-title: Basic LaTeX document
-custom_css:
-  - syntax.css
----
-A more-or-less complete, but still very basic LaTeX document follows.
-
-```tex
-\documentclass[11pt]{article}
-
-% Basic setup
-\usepackage{cmap}
-\usepackage[utf8]{inputenc}
-\usepackage[T2A]{fontenc}
-\usepackage[russian]{babel}
-
-% Completely arbitrary settings follow:
-
-% Sans serif font by default
-\renewcommand\familydefault{\sfdefault}
-
-% Document margins
-\usepackage[margin=2.5cm]{geometry}
-
-% Paragraph indents
-\usepackage{parskip}
-\setlength\parindent{0cm}
-\setlength\parskip{0cm}
-
-% URLs
-\usepackage[colorlinks=true,urlcolor=blue]{hyperref}
-
-\begin{document}
-
-Привет, \LaTeX!
-Ссылка на репозиторий: \href{https://github.com/egor-tensin/notes}{https://github.com/egor-tensin/notes}.
-
-\end{document}
-```
diff --git a/_notes/markdown.md b/_notes/markdown.md
deleted file mode 100644
index dee25f4..0000000
--- a/_notes/markdown.md
+++ /dev/null
@@ -1,44 +0,0 @@
----
-title: Markdown style guide
----
-
-* `diff`- and HTML-friendliness is valued over human-readability.
-* Every sentence starts on a new line ("semantic newlines").
-* Lines are at most 79 characters long, not counting neither the carriage
-return, nor the line feed characters.
-    * Not 80 characters, because when you display a 80-character line with a
-line feed at the end in Windows' `cmd`, an extra empty line is added.
-* No hanging indents in lists.
-    * Nested lists are indented with 4 spaces.
-    * No hanging indents in those also.
-    * Longer items wrap at 79 characters and continue from the leftmost
-character column.
-Additional sentences start there also.
-* Prefer reference-style links over inline links.
-Omit the second pair of brackets `[]` entirely where appropriate.
-For example, [Google] is preferred over both [Google](https://ya.ru) and
-[I'm feeeling lucky][google] (see [this document's source]).
-* First- and second-level headers are underlined with strings of `=` and `-`.
-The number of `=`/`-` signs must be equal to the number of characters in the
-header.
-* File paths are enclosed in double quotes.
-Environment variable names are enclosed in a pair of backticks (\`) unless it's
-a part of a path.
-Executable names are enclosed in a pair of backticks (\`) unless it's a part of
-a path, a link or a header.
-* Code blocks are indented with 4 spaces.
-
-      Code blocks inside lists are indented according to the spec
-      (https://github.github.com/gfm/#list-items), i.e. the column of the first
-      non-whitespace character in the item + 4.
-
-* Don't mix fenced code blocks with indented code blocks in a single document.
-
-| In a table, | the first | row   | is underlined.
-| ----------- | --------- | ----- | --------------
-| Leftmost    | vertical  | lines | are required.
-| Rightmost   | vertical  | lines | are omitted.
-{: .table .table-bordered }
-
-[Google]: https://www.google.com/
-[this document's source]: https://raw.githubusercontent.com/{{ site.github.repository_nwo }}/{{ site.github.source.branch }}/{{ page.path }}