Add "Make a suggestion button"

package.json

@@ -18,7 +18,8 @@
 		"contribCommentPeekContext",
 		"contribCommentThreadAdditionalMenu",
 		"codiconDecoration",
-		"diffCommand"
+		"diffCommand",
+		"contribCommentEditorActionsMenu"
 	],
 	"version": "0.56.0",
 	"publisher": "GitHub",
@@ -759,6 +760,11 @@
 				"category": "%command.pull.request.category%",
 				"enablement": "!commentIsEmpty"
 			},
+			{
+				"command": "pr.makeSuggestion",
+				"title": "%command.pr.makeSuggestion.title%",
+				"category": "%command.pull.request.category%"
+			},
 			{
 				"command": "pr.startReview",
 				"title": "%command.pr.startReview.title%",
@@ -1241,6 +1247,10 @@
 					"command": "pr.createSingleComment",
 					"when": "false"
 				},
+				{
+					"command": "pr.makeSuggestion",
+					"when": "false"
+				},
 				{
 					"command": "pr.startReview",
 					"when": "false"
@@ -1722,6 +1732,13 @@
 					"when": "commentController =~ /^github-review/ && !reviewInDraftMode"
 				}
 			],
+			"comments/comment/editorActions": [
+				{
+					"command": "pr.makeSuggestion",
+					"group": "inline@3",
+					"when": "commentController =~ /^github-review/"
+				}
+			],
 			"comments/commentThread/additionalActions": [
 				{
 					"command": "pr.resolveReviewThread",

package.nls.json

@@ -143,6 +143,7 @@
 	"command.pr.deleteLocalBranchesNRemotes.title": "Delete local branches and remotes",
 	"command.pr.createComment.title": "Add Review Comment",
 	"command.pr.createSingleComment.title": "Add Comment",
+	"command.pr.makeSuggestion.title": "Make a Suggestion",
 	"command.pr.startReview.title": "Start Review",
 	"command.pr.editComment.title": "Edit Comment",
 	"command.pr.cancelEditComment.title": "Cancel",

src/commands.ts

@@ -866,6 +866,26 @@ export function registerCommands(
 		}),
 	);
 
+	context.subscriptions.push(
+		vscode.commands.registerCommand('pr.makeSuggestion', async (reply: CommentReply | GHPRComment) => {
+			const thread = reply instanceof GHPRComment ? reply.parent : reply.thread;
+			const commentEditor = vscode.window.activeTextEditor?.document.uri.scheme === Schemes.Comment ? vscode.window.activeTextEditor
+				: vscode.window.visibleTextEditors.find(visible => visible.document.uri.scheme === Schemes.Comment);
+			if (!commentEditor) {
+				Logger.appendLine('No comment editor visible for making a suggestion.');
+				vscode.window.showErrorMessage(vscode.l10n.t('No available comment editor to make a suggestion in.'));
+				return;
+			}
+			const editor = vscode.window.visibleTextEditors.find(editor => editor.document.uri.toString() === thread.uri.toString());
+			const contents = editor?.document.getText(new vscode.Range(thread.range.start.line, 0, thread.range.end.line, editor.document.lineAt(thread.range.end.line).text.length));
+			return commentEditor.edit((editBuilder) => {
+				editBuilder.insert(new vscode.Position(commentEditor.document.lineCount, 0), `\`\`\`suggestion
+${contents}
+\`\`\``);
+			});
+		})
+	);
+
 	context.subscriptions.push(
 		vscode.commands.registerCommand('pr.editComment', async (comment: GHPRComment | TemporaryComment) => {
 			/* __GDPR__

src/github/prComment.ts

@@ -182,7 +182,7 @@ export class TemporaryComment extends CommentBase {
 	}
 }
 
-const SUGGESTION_EXPRESSION = /```suggestion(\n|\r\n)([\s\S]*)(\n|\r\n)```/;
+const SUGGESTION_EXPRESSION = /```suggestion(\r\n|\n)([\s\S]*)(\r\n|\n)```/;
 
 export class GHPRComment extends CommentBase {
 	public commentId: string;

src/view/reviewCommentController.ts

@@ -868,7 +868,7 @@ export class ReviewCommentController
 			throw new Error('Cannot find the editor to apply the suggestion to.');
 		}
 		await editor.edit(builder => {
-			builder.replace(range, suggestion);
+			builder.replace(range.with(undefined, new vscode.Position(range.end.line + 1, 0)), suggestion);
 		});
 	}