Fix: Match links to a single file with their dot extensions

src/inline/view-plugin.spec.ts

@@ -0,0 +1,123 @@
+import { expect, test, describe } from "@jest/globals";
+import { matchRegexp } from './view-plugin';
+
+// Some potential URLs:
+const GITHUB_URLS = [
+  // USER/ORG
+  'https://github.com/nathonius',
+  // REPO
+  'https://github.com/nathonius/obsidian-github-link',
+  'https://github.com/nathonius/obsidian-github-link/tree/main',
+  'https://github.com/joshleaves/obsidian-github-link/tree/fix/156-linking-to-file',
+  'https://github.com/nathonius/obsidian-github-link/blob/main/src/github/url-parse.ts',
+  'https://github.com/nathonius/obsidian-github-link/blob/main/src/inline/view-plugin.ts#L21',
+  'https://github.com/nathonius/obsidian-github-link/blob/main/src/inline/view-plugin.ts#L13-32',
+  // ISSUES
+  'https://github.com/nathonius/obsidian-github-link/issues',
+  'https://github.com/nathonius/obsidian-github-link/issues/156',
+  // PULLS
+  'https://github.com/nathonius/obsidian-github-link/pulls',
+  'https://github.com/nathonius/obsidian-github-link/pull/157',
+  'https://github.com/nathonius/obsidian-github-link/pull/157/commits',
+  'https://github.com/nathonius/obsidian-github-link/pull/157/commits/42d35e4c7070d2ec9f3bacf7f4a0561d9d7346bb',
+  'https://github.com/nathonius/obsidian-github-link/pull/157/files',
+  // MORE EDGE CASES
+  'https://github.com/kwsch/pk3DS/blob/e40d3ce5548d75821f31785dc88cd465610530a6/pk3DS.Core/CTR/Images/BCLIM.cs',
+  'https://github.com/kwsch/png2bclim/blob/master/png2bclim/BCLIM.cs',
+  'https://github.com/kwsch/png2bclim',
+  'https://github.com/ihaveamac/3DS-rom-tools/wiki/Extract-a-game-or-application-in-.3ds-or-.cci-format'
+]
+
+describe('matchRegexp', () => {
+  test('matches GitHub URLs on their own', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `${url}` // (...)
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    });
+  });
+
+  test('does not match URLs inside markdown links', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `[A link to GitHub](${url})`;
+      const match = text.match(matchRegexp);
+      expect(match).toBeNull();
+    });
+  });
+
+  test('matches URLs ending a sentence', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `That's the end of the line for ${url}.`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    });
+  });
+
+  test('matches URLs followed by punctuation', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `First ${url}, then some text.`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    });
+  });
+
+  test('matches URLs ending a sentence with an interrogative', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `You heard about ${url}?`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    });
+  });
+
+  test('matches URLs followed by multiple punctuation', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `A test for ${url}...`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    });
+  });
+
+
+  test('matches URLs ending a sentence that segues to another', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `That's the end of the line for ${url}. But not for this variable!`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    });
+  });
+
+  test('matches URLs in text with multiple lines', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `Some text
+      ${url}
+      more text.`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    });
+  });
+
+  test('matches URLs in text followed by another text', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `${url} is a cool plugin`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    })
+  });
+
+  test('matches URLs quoted', () => {
+    GITHUB_URLS.forEach(url => {
+      const text = `Obama chuckled: you mean "${url}" ?`;
+      const match = text.match(matchRegexp);
+      expect(match).not.toBeNull();
+      expect(match![0]).toBe(url);
+    })
+  });
+});

src/inline/view-plugin.ts

@@ -36,6 +36,8 @@ class InlineTagWidget extends WidgetType {
 	}
 }
 
+export const matchRegexp = /(?<!]\()https:\/\/github\.com\/[^\s]+(?<!['".?,:;]+)/g;
+
 export function createInlineViewPlugin(_plugin: GithubLinkPlugin) {
 	class InlineViewPluginValue implements PluginValue {
 		/**
@@ -47,7 +49,7 @@ export function createInlineViewPlugin(_plugin: GithubLinkPlugin) {
 		public inlineTags: DecorationSet = Decoration.none;
 
 		private readonly matcher = new MatchDecorator({
-			regexp: /(?<!\[.*?\]\()https:\/\/github\.com\/[^\s,.)]+/g,
+			regexp: matchRegexp,
 			decorate: (add, from, to, match, _view) => {
 				add(
 					from,