Enable paste url for file uris (microsoft#203270)

Fixes microsoft#203180

Author: mjbvz

extensions/markdown-language-features/src/languageFeatures/copyFiles/pasteUrlProvider.ts

@@ -7,7 +7,8 @@ import * as vscode from 'vscode';
 import { IMdParser } from '../../markdownEngine';
 import { ITextDocument } from '../../types/textDocument';
 import { Mime } from '../../util/mimes';
-import { createInsertUriListEdit, externalUriSchemes } from './shared';
+import { createInsertUriListEdit } from './shared';
+import { Schemes } from '../../util/schemes';
 
 export enum PasteUrlAsMarkdownLink {
 	Always = 'always',
@@ -170,6 +171,14 @@ async function shouldSmartPasteForSelection(
 	return true;
 }
 
+
+const externalUriSchemes: ReadonlySet<string> = new Set([
+	Schemes.http,
+	Schemes.https,
+	Schemes.mailto,
+	Schemes.file,
+]);
+
 export function findValidUriInText(text: string): string | undefined {
 	const trimmedUrlList = text.trim();
 
@@ -186,7 +195,7 @@ export function findValidUriInText(text: string): string | undefined {
 		return;
 	}
 
-	if (!externalUriSchemes.includes(uri.scheme.toLowerCase()) || uri.authority.length <= 1) {
+	if (!externalUriSchemes.has(uri.scheme.toLowerCase()) || uri.authority.length <= 1) {
 		return;
 	}
 

extensions/markdown-language-features/src/languageFeatures/copyFiles/shared.ts

@@ -19,12 +19,6 @@ enum MediaKind {
 	Audio,
 }
 
-export const externalUriSchemes = [
-	'http',
-	'https',
-	'mailto',
-];
-
 export const mediaFileExtensions = new Map<string, MediaKind>([
 	// Images
 	['bmp', MediaKind.Image],

extensions/markdown-language-features/src/util/schemes.ts

@@ -4,6 +4,8 @@
  *--------------------------------------------------------------------------------------------*/
 
 export const Schemes = Object.freeze({
+	http: 'http',
+	https: 'https',
 	file: 'file',
 	untitled: 'untitled',
 	mailto: 'mailto',