unified

Project: remarkjs/remark-lint

Package: remark-lint-link-title-style@3.1.1

  1. Dependents: 0
  2. remark-lint rule to warn when link and definition titles occur with incorrect quotes
  1. remark 214
  2. lint 80
  3. rule 75
  4. remark-lint-rule 68
  5. link 16
  6. definition 16
  7. image 13
  8. style 11

remark-lint-link-title-style

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remark-lint rule to warn when link title markers violate a given style.

Contents

What is this?

This package checks the style of link title markers.

When should I use this?

You can use this package to check that the style of link title markers is consistent.

Presets

This plugin is included in the following presets:

PresetOptions
remark-preset-lint-consistent'consistent'
remark-preset-lint-markdown-style-guide'"'

Install

This package is ESM only. In Node.js (version 16+), install with npm:

npm install remark-lint-link-title-style

In Deno with esm.sh:

import remarkLintLinkTitleStyle from 'https://esm.sh/remark-lint-link-title-style@3'

In browsers with esm.sh:

<script type="module">
  import remarkLintLinkTitleStyle from 'https://esm.sh/remark-lint-link-title-style@3?bundle'
</script>

Use

On the API:

import remarkLint from 'remark-lint'
import remarkLintLinkTitleStyle from 'remark-lint-link-title-style'
import remarkParse from 'remark-parse'
import remarkStringify from 'remark-stringify'
import {read} from 'to-vfile'
import {unified} from 'unified'
import {reporter} from 'vfile-reporter'

const file = await read('example.md')

await unified()
  .use(remarkParse)
  .use(remarkLint)
  .use(remarkLintLinkTitleStyle)
  .use(remarkStringify)
  .process(file)

console.error(reporter(file))

On the CLI:

remark --frail --use remark-lint --use remark-lint-link-title-style .

On the CLI in a config file (here a package.json):

 …
 "remarkConfig": {
   "plugins": [
     …
     "remark-lint",
+    "remark-lint-link-title-style",
     …
   ]
 }
 …

API

This package exports no identifiers. It exports the TypeScript types Options and Style. The default export is remarkLintLinkTitleStyle.

unified().use(remarkLintLinkTitleStyle[, options])

Warn when link title markers violate a given style.

Parameters
Returns

Transform (Transformer from unified).

Options

Configuration (TypeScript type).

Type
type Options = Style | 'consistent'

Style

Style (TypeScript type).

Type
type Style = '"' | '\'' | '()'

Recommendation

Before CommonMark, parens for titles were not supported in markdown. They should now work in most places. Parens do look a bit weird as they’re inside more parens: [text](url (title)).

In HTML, attributes are commonly written with double quotes. Due to this, titles are almost exclusively wrapped in double quotes in markdown, so it’s recommended to configure this rule with '"'.

Fix

remark-stringify formats titles with double quotes by default. Pass quote: "'" to use single quotes. There is no option to use parens.

Examples

ok.md

When configured with '"'.

In
[Example](http://example.com#without-title)
[Example](http://example.com "Example Domain")
![Example](http://example.com "Example Domain")

[Example]: http://example.com "Example Domain"

You can use parens in URLs if they’re not a title (see GH-166):

[Example](#Heading-(optional))
Out

No messages.

not-ok.md

When configured with '"'.

In
[Example]: http://example.com 'Example Domain'
Out
1:31-1:47: Titles should use `"` as a quote
ok.md

When configured with "'".

In
[Example](http://example.com#without-title)
[Example](http://example.com 'Example Domain')
![Example](http://example.com 'Example Domain')

[Example]: http://example.com 'Example Domain'
Out

No messages.

not-ok.md

When configured with "'".

In
[Example]: http://example.com "Example Domain"
Out
1:31-1:47: Titles should use `'` as a quote
ok.md

When configured with '()'.

In
[Example](http://example.com#without-title)
[Example](http://example.com (Example Domain))
![Example](http://example.com (Example Domain))

[Example]: http://example.com (Example Domain)
Out

No messages.

not-ok.md

When configured with '()'.

In
[Example](http://example.com 'Example Domain')
Out
1:30-1:46: Titles should use `()` as a quote
not-ok.md
In
[Example](http://example.com "Example Domain")
[Example](http://example.com 'Example Domain')
Out
2:30-2:46: Titles should use `"` as a quote
not-ok.md

When configured with '💩'.

Out
1:1: Incorrect link title style marker `💩`: use either `'consistent'`, `'"'`, `'\''`, or `'()'`

Compatibility

Projects maintained by the unified collective are compatible with maintained versions of Node.js.

When we cut a new major release, we drop support for unmaintained versions of Node. This means we try to keep the current release line, remark-lint-link-title-style@3, compatible with Node.js 12.

Contribute

See contributing.md in remarkjs/.github for ways to get started. See support.md for ways to get help.

This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MIT © Titus Wormer