Fixes #2033 untracked files in stashes

CHANGELOG.md

@@ -40,6 +40,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 ## Fixed
 
+- Fixes [#2033](https://github.com/gitkraken/vscode-gitlens/issues/2033) - Diffing, applying, and restoring untracked files in a stash doesn't work
 - Fixes [#2028](https://github.com/gitkraken/vscode-gitlens/issues/2028) - Branch names with special characters '<' also causes errors on the command line &mdash; thanks to [PR #2030](https://github.com/gitkraken/vscode-gitlens/pull/2030) by mcy-kylin ([@mcy-kylin](https://github.com/mcy-kylin))
 - Fixes [#2028](https://github.com/gitkraken/vscode-gitlens/issues/2028) - Branch names with special characters like ';$|>' causes errors on the command line (terminal executed git commands)
 - Fixes [#2021](https://github.com/gitkraken/vscode-gitlens/issues/2021) - GitLab remote provider uses legacy routes &mdash; thanks to [PR #2022](https://github.com/gitkraken/vscode-gitlens/pull/2022) by Brian Williams ([@Brcrwilliams](https://github.com/Brcrwilliams))
@@ -4211,7 +4212,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 - Initial release but still heavily a work in progress.
 
-[Unreleased]: https://github.com/gitkraken/vscode-gitlens/compare/v12.0.7...HEAD
+[unreleased]: https://github.com/gitkraken/vscode-gitlens/compare/v12.0.7...HEAD
 [12.0.6]: https://github.com/gitkraken/vscode-gitlens/compare/v12.0.6...gitkraken:v12.0.7
 [12.0.6]: https://github.com/gitkraken/vscode-gitlens/compare/v12.0.5...gitkraken:v12.0.6
 [12.0.5]: https://github.com/gitkraken/vscode-gitlens/compare/v12.0.4...gitkraken:v12.0.5

src/commands/diffWithPrevious.ts

@@ -56,7 +56,8 @@ export class DiffWithPreviousCommand extends ActiveEditorCommand {
 						uri: args.commit.file.originalUri ?? args.commit.file.uri,
 					},
 					rhs: {
-						sha: args.commit.sha || '',
+						// If the file is `?` (untracked), then this must be a stash, so get the ^3 commit to access the untracked file
+						sha: args.commit.file.status === '?' ? `${args.commit.sha}^3` : args.commit.sha || '',
 						uri: args.commit.file.uri,
 					},
 					line: args.line,

src/commands/gitCommands.actions.ts

@@ -169,9 +169,16 @@ export namespace GitActions {
 		) {
 			// Open the working file to ensure undo will work
 			void (await GitActions.Commit.openFile(file, ref1, { preserveFocus: true, preview: false }));
+
+			let ref = ref1.ref;
+			// If the file is `?` (untracked), then this must be a stash, so get the ^3 commit to access the untracked file
+			if (typeof file !== 'string' && file.status === '?') {
+				ref = `${ref}^3`;
+			}
+
 			void (await Container.instance.git.applyChangesToWorkingFile(
-				GitUri.fromFile(file, ref1.repoPath, ref1.ref),
-				ref1.ref,
+				GitUri.fromFile(file, ref1.repoPath, ref),
+				ref,
 				ref2?.ref,
 			));
 		}
@@ -502,7 +509,10 @@ export namespace GitActions {
 				options = refOrOptions as TextDocumentShowOptions;
 			} else {
 				const ref = refOrOptions as GitRevisionReference;
+
 				uri = GitUri.fromFile(fileOrUri, ref.repoPath, ref.ref);
+				// If the file is `?` (untracked), then this must be an untracked file in a stash, so just return
+				if (typeof fileOrUri !== 'string' && fileOrUri.status === '?') return;
 			}
 
 			options = { preserveFocus: true, preview: false, ...options };
@@ -663,7 +673,8 @@ export namespace GitActions {
 				ref = revision.ref;
 			} else {
 				path = file.path;
-				ref = file.status === 'D' ? `${revision.ref}^` : revision.ref;
+				ref =
+					file.status === `?` ? `${revision.ref}^3` : file.status === 'D' ? `${revision.ref}^` : revision.ref;
 			}
 
 			void (await Container.instance.git.checkout(revision.repoPath, ref, { path: path }));

src/git/gitUri.ts

@@ -230,7 +230,14 @@ export class GitUri extends (Uri as any as UriEx) {
 			typeof file === 'string' ? file : (original && file.originalPath) || file.path,
 			repoPath,
 		);
-		return !ref ? new GitUri(uri, repoPath) : new GitUri(uri, { repoPath: repoPath, sha: ref });
+
+		return !ref
+			? new GitUri(uri, repoPath)
+			: new GitUri(uri, {
+					repoPath: repoPath,
+					// If the file is `?` (untracked), then this must be a stash, so get the ^3 commit to access the untracked file
+					sha: typeof file !== 'string' && file.status === '?' ? `${ref}^3` : ref,
+			  });
 	}
 
 	static fromRepoPath(repoPath: string, ref?: string) {