outdent line following continue / break / return statements (#1050)

* outdent line following continue / break / return statements

Automatically outdenting lines following "continue", "break" or "return"
statements seems natural and consistent with other editors (e.g. emacs
or vim) behaviour.

* add word separator in regexp after keywords

This will avoid matching strings such as "returning". The
word should be matched as a word not as prefix.

Author: adimascio

src/client/extension.ts

@@ -85,7 +85,11 @@ export function activate(context: vscode.ExtensionContext) {
             {
                 beforeText: /^ *#.*$/,
                 afterText: /.+$/,
-                action: { indentAction: vscode.IndentAction.None, appendText: '# ' }
+                action: { indentAction: vscode.IndentAction.None, appendText: '# ' },
+            },
+            {
+                beforeText: /^\s+(continue|break|return)\b.*$/,
+                action: {indentAction: vscode.IndentAction.Outdent},
             }
         ]
     });