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As we all know, links in Markdown are written like this:
This is [an example](http://example.com/ "Title") inline link. [This link](http://example.net/) has no title attribute.
This widely used way of writing links is called an inline link. In fact, there is another less commonly used way of writing links in Markdown, that is, reference-style links. Its form is as follows:
This is [an example] [id] reference-style link. [id]: http://example.com/ "Optional Title Here"
It can be found that the reference link uses two square brackets in the text. The first square bracket wraps the text part of the hyperlink, which is
[an example] here, followed by an optional space , and then use the second square brackets to wrap the identifier of the link, which is represented by
In the link section below, the identifier
[id] of the link appears first, followed by a colon
: , followed by one or more spaces (or the Tab key), then the URL of the link, and finally an optional The title of the link, whose format is consistent with the title of the inline link, wrapped in parentheses
() , double quotes
" or single quotes
' . In addition, the link identifier can also be omitted for quoted links, that is, the second square bracket is omitted The content in this link is called an implicit link (implicit link), and its writing method is as follows:
[Google] [Google]: https://www.google.com
What are the benefits of citation links over inline links? John Gruber gave an explanation when he introduced the basic grammar of Markdown:
The point of reference-style links is not that they’re easier to write. The point is that with reference-style links, your document source is vastly more readable.
The point of citation links is not that they are easier to write, the point is that using citation links can greatly improve the readability of Markdown source files.
Indeed, when there are a large number of links in Markdown source files, and these links are very lengthy and unattractive, inline links will not only significantly reduce the readability of source files, but even interfere with our writing ideas, while reference links will This problem can be largely avoided. In addition, during the writing process, we often don’t want to interrupt the writing process to search for links on the Internet. In this case, we can first place a reference link placeholder to facilitate subsequent supplements. It doesn’t matter if you forget to fill in the link, the Markdown grammar checker will mark it in the wrong form and remind us to modify it.
A Markdown file, comparing the effect of using inline links and reference links respectively, it is obvious that the reference links on the right are more readable
Related reading: Pick your markdown – entry and advanced grammar checker
Insert Quoted Links Using Keyboard Maestro
A few days ago, when the minority editor @PlatyHsu used reference links (he called them “split links”) in the “wall crack recommendation” in the member group, I commented that “it’s a bit troublesome to add a link identifier manually”. But then I realized that compared to the convenience brought by citation links, this trouble is still acceptable, and what I want to do is to make the process of writing citation links easier. To do this, I made a Keyboard Maestro action ( Click to download ) to help me quickly insert citation-style links when writing in Markdown.
Keyboard Maestro Action to Quickly Insert Quoted Links
The main principle of this Keyboard Maestro action is to generate a random link identifier (3 digits are set here, UUID consists of uppercase English letters and Arabic numerals) to avoid possible duplication during manual editing. The identifier and URL are then inserted into the corresponding positions in the format of a referenced link.
The method of use is very simple, first copy the URL of the link to the clipboard, then move the cursor in the Markdown file to select the text to insert the link, and then press the shortcut key
⌥ + ⇧ + K (you can also modify it to other shortcut keys) , the link in the clipboard will be automatically inserted as a quoted link. It should be noted that if you use a sentence-for-line writing method, you may need to move the inserted link text up and down a few lines; if you use Vim in VS Code , please do not perform this action in Normal Mode, but need First press
a to enter Insert Mode, and then perform this Keyboard Maestro action.
Quickly Insert Quoted Links Using Keyboard Maestro Actions
Using citation links in Pandoc’s Markdown
pandoc --reference-links --reference-location=block input.md -o output.md
In this line of command,
--reference-links specifies the use of reference links instead of the default inline links,
--reference-location=block indicates that the location of reference links is
block , that is, placed below each paragraph, and the other two The two options are
section (placed at the end of the current section) and
document (placed at the end of the document, the default option). The input file is
input.md and the output file is
It is worth mentioning that Pandoc also provides an extension
shortcut_reference_links , which supports omitting the second square bracket of the reference link, that is, you can shorten the reference link in Markdown like this (when converted to
markdown , this is a default open option):
See [my website]. [my website]: http://foo.bar.baz
In addition, if you are used to adding a space between the two square brackets of reference links, that is,
[foo] [bar] , you can enable the
spaced_reference_links extension when converting with Pandoc.
Although standard Markdown does not support footnotes, many Markdown variants do. In general, most Markdown dialects and editors support both inline and quoted footnotes, with the latter being more commonly used:
Here is a footnote reference,[^1] and another.[^longnote] [^1]: Here is the footnote. [^longnote]: Here's one with multiple blocks.
Writing with relatively few inline footnotes:
Here is an inline note.^[Inline notes are easier to write, since you don't have to pick an identifier and move down to type the note.]
It is easy to find that footnotes are written very similarly to links. Inline footnotes are written concisely, and quoted footnotes are more readable, but need to manually add an identifier when writing. In order to avoid possible conflicts in identifiers caused by manual editing, we again use the Keyboard Maestro action to randomly generate identifiers ( Click to download ).
Keyboard Maestro action for inserting quoted footnotes
The idea of this Keyboard Maestro action is similar to the action of inserting a reference link, so I won’t repeat it here. It is also very simple to use, you only need to position the cursor where you want to insert a footnote, and then press the shortcut key
⌥ + ⇧ + J , it will automatically insert the footnote identifier, and position the cursor to fill in the content of the footnote Location.
Insert quoted footnotes using Keyboard Maestro actions
@PlatyHsu said: “There are many people who can write Markdown, but there are very few people who can write Markdown well.” Indeed, although Markdown is easy to use, it still requires continuous learning to write it well. Using reference links and footnotes in Markdown can be regarded as a writing habit worth learning, because it can greatly improve the readability of your Markdown documents, and is more conducive to subsequent editing and revision. This article introduces these two “quoted writing methods” and how to use Keyboard Maestro or Pandoc to quickly insert or convert quoted links and footnotes to improve writing efficiency. If you have a better method or want to add content, please share it in the comment area.
> Practical and easy-to-use genuine software , presented to you by the minority
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