Git - enable commit signing using SSH key (microsoft#201298)

Author: lszomoru

extensions/git/package.nls.json

@@ -168,7 +168,7 @@
 	"config.smartCommitChanges.all": "Automatically stage all changes.",
 	"config.smartCommitChanges.tracked": "Automatically stage tracked changes only.",
 	"config.suggestSmartCommit": "Suggests to enable smart commit (commit all changes when there are no staged changes).",
-	"config.enableCommitSigning": "Enables commit signing with GPG or X.509.",
+	"config.enableCommitSigning": "Enables commit signing with GPG, X.509, or SSH.",
 	"config.discardAllScope": "Controls what changes are discarded by the `Discard all changes` command. `all` discards all changes. `tracked` discards only tracked files. `prompt` shows a prompt dialog every time the action is run.",
 	"config.decorations.enabled": "Controls whether Git contributes colors and badges to the Explorer and the Open Editors view.",
 	"config.enableStatusBarSync": "Controls whether the Git Sync command appears in the status bar.",

extensions/git/src/askpass-main.ts

@@ -46,7 +46,9 @@ function main(argv: string[]): void {
 	if (askpassType === 'ssh') {
 		if (/passphrase/i.test(request)) {
 			// passphrase
-			file = argv[6].replace(/^["']+|["':]+$/g, '');
+			// Commit signing - Enter passphrase:
+			// Git operation  - Enter passphrase for key '/c/Users/<username>/.ssh/id_ed25519':
+			file = argv[6]?.replace(/^["']+|["':]+$/g, '');
 		} else {
 			// authenticity
 			host = argv[6].replace(/^["']+|["':]+$/g, '');

extensions/git/src/askpass.ts

@@ -102,7 +102,7 @@ export class Askpass implements IIPCHandler, ITerminalEnvironmentProvider {
 			const options: InputBoxOptions = {
 				password: true,
 				placeHolder: l10n.t('Passphrase'),
-				prompt: `SSH Key: ${file}`,
+				prompt: file ? `SSH Key: ${file}` : undefined,
 				ignoreFocusOut: true
 			};