From 9a8b57d21fb0b97a6ec3156deda46d31768a10f4 Mon Sep 17 00:00:00 2001
From: "Garen J. Torikian" <gjtorikian@users.noreply.github.com>
Date: Tue, 30 Apr 2024 13:21:36 -0700
Subject: [PATCH] Add `relaxed_autolinks`

---
 README.md                       |  9 +++++----
 ext/commonmarker/src/options.rs |  4 ++++
 lib/commonmarker/config.rb      |  1 +
 test/relaxed_autolinks_test.rb  | 23 +++++++++++++++++++++++
 4 files changed, 33 insertions(+), 4 deletions(-)
 create mode 100644 test/relaxed_autolinks_test.rb

diff --git a/README.md b/README.md
index 6a14ae75..fdb6837b 100644
--- a/README.md
+++ b/README.md
@@ -151,10 +151,11 @@ Note that there is a distinction in comrak for "parse" options and "render" opti
 
 ### Parse options
 
-| Name                  | Description                                                                          | Default |
-| --------------------- | ------------------------------------------------------------------------------------ | ------- |
-| `smart`               | Punctuation (quotes, full-stops and hyphens) are converted into 'smart' punctuation. | `false` |
-| `default_info_string` | The default info string for fenced code blocks.                                      | `""`    |
+| Name                  | Description                                                                                                                                | Default |
+| --------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ------- |
+| `smart`               | Punctuation (quotes, full-stops and hyphens) are converted into 'smart' punctuation.                                                       | `false` |
+| `default_info_string` | The default info string for fenced code blocks.                                                                                            | `""`    |
+| `relaxed_autolinks`   | Enable relaxing of the autolink extension parsing, allowing links to be recognized when in brackets, as well as permitting any url scheme. | `false` |
 
 ### Render options
 
diff --git a/ext/commonmarker/src/options.rs b/ext/commonmarker/src/options.rs
index 7c96a4dc..73a3a0eb 100644
--- a/ext/commonmarker/src/options.rs
+++ b/ext/commonmarker/src/options.rs
@@ -10,6 +10,7 @@ use crate::utils::try_convert_string;
 
 const PARSE_SMART: &str = "smart";
 const PARSE_DEFAULT_INFO_STRING: &str = "default_info_string";
+const PARSE_RELAXED_AUTOLINKS: &str = "relaxed_autolinks";
 
 fn iterate_parse_options(comrak_options: &mut ComrakOptions, options_hash: RHash) {
     options_hash
@@ -21,6 +22,9 @@ fn iterate_parse_options(comrak_options: &mut ComrakOptions, options_hash: RHash
                 Ok(Cow::Borrowed(PARSE_DEFAULT_INFO_STRING)) => {
                     comrak_options.parse.default_info_string = try_convert_string(value);
                 }
+                Ok(Cow::Borrowed(PARSE_RELAXED_AUTOLINKS)) => {
+                    comrak_options.parse.relaxed_autolinks = TryConvert::try_convert(value)?;
+                }
                 _ => {}
             }
             Ok(ForEach::Continue)
diff --git a/lib/commonmarker/config.rb b/lib/commonmarker/config.rb
index 3db3ac4a..f72353fc 100644
--- a/lib/commonmarker/config.rb
+++ b/lib/commonmarker/config.rb
@@ -8,6 +8,7 @@ module Config
       parse: {
         smart: false,
         default_info_string: "",
+        relaxed_autolinks: false,
       }.freeze,
       render: {
         hardbreaks: true,
diff --git a/test/relaxed_autolinks_test.rb b/test/relaxed_autolinks_test.rb
new file mode 100644
index 00000000..24bbe1b4
--- /dev/null
+++ b/test/relaxed_autolinks_test.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class RelaxedAutolinksTest < Minitest::Test
+  def test_to_html
+    md = <<~MARKDOWN
+      [https://foo.com]
+
+      smb:///Volumes/shared/foo.pdf
+
+      rdar://localhost.com/blah
+    MARKDOWN
+
+    expected = <<~HTML
+      <p>[<a href="https://foo.com">https://foo.com</a>]</p>
+      <p><a href="smb:///Volumes/shared/foo.pdf">smb:///Volumes/shared/foo.pdf</a></p>
+      <p><a href="rdar://localhost.com/blah">rdar://localhost.com/blah</a></p>
+    HTML
+
+    assert_equal(expected, Commonmarker.to_html(md, options: { parse: { relaxed_autolinks: true } }))
+  end
+end