fix intersystems-community#623 recognize 'system=1' as a signal to include %-items

Author: gjsjohnmurray

README.md

@@ -189,6 +189,7 @@ To modify how your folder behaves, edit the JSON of your workspace definition (_
   - `type=cls` to show only classes, or `type=rtn` to show only routines.
   - `flat=1` to flatten the hierarchy.
   - `generated=1` to show generated items.
+  - `system=1` to show system (%) items. Without this parameter these are only shown for the %SYS namespace.
   - `filter=filterspec` to use a filter specification formatted in the same way as used in InterSystems Studio's File Open dialog (e.g. `filter=Ensem*.inc`).
 
 ## Support and Training

src/providers/FileSystemProvider/FileSystemProvider.ts

@@ -77,7 +77,7 @@ export class FileSystemProvider implements vscode.FileSystemProvider {
     const spec = csp ? folder + filter : folder.length > 1 ? folder.slice(1) + "/" + filter : filter;
     const dir = "1";
     const orderBy = "1";
-    const system = api.ns === "%SYS" ? "1" : "0";
+    const system = query.system && query.system.length ? query.system.toString() : api.ns === "%SYS" ? "1" : "0";
     const flat = query.flat && query.flat.length ? query.flat.toString() : "0";
     const notStudio = "0";
     const generated = query.generated && query.generated.length ? query.generated.toString() : "0";