restored file removed by mistake

docs/_includes/anchor_headings.html

@@ -0,0 +1,144 @@
+{% capture headingsWorkspace %}
+{% comment %}
+Copyright (c) 2018 Vladimir "allejo" Jimenez
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+{% endcomment %}
+{% comment %}
+Version 1.0.7
+https://github.com/allejo/jekyll-anchor-headings
+
+"Be the pull request you wish to see in the world." ~Ben Balter
+
+Usage:
+{% include anchor_headings.html html=content anchorBody="#" %}
+
+Parameters:
+* html          (string) - the HTML of compiled markdown generated by kramdown in Jekyll
+
+Optional Parameters:
+* beforeHeading (bool)   : false  - Set to true if the anchor should be placed _before_ the heading's content
+* anchorAttrs   (string) :  ''    - Any custom HTML attributes that will be added to the `<a>` tag; you may NOT use `href`, `class` or `title`;
+  the `%heading%` and `%html_id%` placeholders are available
+  * anchorBody    (string) :  ''    - The content that will be placed inside the anchor; the `%heading%` placeholder is available
+  * anchorClass   (string) :  ''    - The class(es) that will be used for each anchor. Separate multiple classes with a space
+  * anchorTitle   (string) :  ''    - The `title` attribute that will be used for anchors
+  * h_min         (int)    :  1     - The minimum header level to build an anchor for; any header lower than this value will be ignored
+  * h_max         (int)    :  6     - The maximum header level to build an anchor for; any header greater than this value will be ignored
+  * bodyPrefix    (string) :  ''    - Anything that should be inserted inside of the heading tag _before_ its anchor and content
+  * bodySuffix    (string) :  ''    - Anything that should be inserted inside of the heading tag _after_ its anchor and content
+
+  Output:
+  The original HTML with the addition of anchors inside of all of the h1-h6 headings.
+  {% endcomment %}
+
+  {% assign minHeader = include.h_min | default: 1 %}
+  {% assign maxHeader = include.h_max | default: 6 %}
+  {% assign beforeHeading = include.beforeHeading %}
+  {% assign nodes = include.html | split: '<h' %}
+
+  {% capture edited_headings %}{% endcapture %}
+
+  {% for _node in nodes %}
+  {% capture node %}{{ _node | strip }}{% endcapture %}
+
+  {% if node == "" %}
+  {% continue %}
+  {% endif %}
+
+  {% assign nextChar = node | replace: '"', '' | strip | slice: 0, 1 %}
+  {% assign headerLevel = nextChar | times: 1 %}
+
+  <!-- If the level is cast to 0, it means it's not a h1-h6 tag, so let's see if we need to fix it -->
+  {% if headerLevel == 0 %}
+  <!-- Split up the node based on closing angle brackets and get the first one. -->
+  {% assign firstChunk = node | split: '>' | first %}
+
+  <!-- If the first chunk does NOT contain a '<', that means we've broken another HTML tag that starts with 'h' -->
+  {% unless firstChunk contains '<' %}
+  {% capture node %}<h{{ node }}{% endcapture %}
+  {% endunless %}
+
+  {% capture edited_headings %}{{ edited_headings }}{{ node }}{% endcapture %}
+  {% continue %}
+  {% endif %}
+
+  {% capture _closingTag %}</h{{ headerLevel }}>{% endcapture %}
+  {% assign _workspace = node | split: _closingTag %}
+  {% assign _idWorkspace = _workspace[0] | split: 'id="' %}
+  {% assign _idWorkspace = _idWorkspace[1] | split: '"' %}
+  {% assign html_id = _idWorkspace[0] %}
+
+  {% capture _hAttrToStrip %}{{ _workspace[0] | split: '>' | first }}>{% endcapture %}
+  {% assign header = _workspace[0] | replace: _hAttrToStrip, '' %}
+
+  <!-- Build the anchor to inject for our heading -->
+  {% capture anchor %}{% endcapture %}
+
+  {% if html_id and headerLevel >= minHeader and headerLevel <= maxHeader %}
+  {% capture anchor %}href="#{{ html_id }}"{% endcapture %}
+
+  {% if include.anchorClass %}
+  {% capture anchor %}{{ anchor }} class="{{ include.anchorClass }}"{% endcapture %}
+  {% endif %}
+
+  {% if include.anchorTitle %}
+  {% capture anchor %}{{ anchor }} title="{{ include.anchorTitle | replace: '%heading%', header }}"{% endcapture %}
+  {% endif %}
+
+  {% if include.anchorAttrs %}
+  {% capture anchor %}{{ anchor }} {{ include.anchorAttrs | replace: '%heading%', header | replace: '%html_id%', html_id }}{% endcapture %}
+  {% endif %}
+
+  {% capture anchor %}<a {{ anchor }}>{{ include.anchorBody | replace: '%heading%', header | default: '' }}</a>{% endcapture %}
+
+  <!-- In order to prevent adding extra space after a heading, we'll let the 'anchor' value contain it -->
+  {% if beforeHeading %}
+  {% capture anchor %}{{ anchor }} {% endcapture %}
+  {% else %}
+  {% capture anchor %} {{ anchor }}{% endcapture %}
+  {% endif %}
+  {% endif %}
+
+  {% capture new_heading %}
+  <h{{ _hAttrToStrip }}
+  {{ include.bodyPrefix }}
+  {% if beforeHeading %}
+  {{ anchor }}{{ header }}
+  {% else %}
+  {{ header }}{{ anchor }}
+  {% endif %}
+  {{ include.bodySuffix }}
+  </h{{ headerLevel }}>
+  {% endcapture %}
+
+  <!--
+  If we have content after the `</hX>` tag, then we'll want to append that here so we don't lost any content.
+  -->
+  {% assign chunkCount = _workspace | size %}
+  {% if chunkCount > 1 %}
+  {% capture new_heading %}{{ new_heading }}{{ _workspace | last }}{% endcapture %}
+  {% endif %}
+
+  {% capture edited_headings %}{{ edited_headings }}{{ new_heading }}{% endcapture %}
+  {% endfor %}
+  {% endcapture %}{% assign headingsWorkspace = '' %}{{ edited_headings | strip }}