Add new configuration option to control clearing of diagnostics

package.json

@@ -407,6 +407,11 @@
 					],
 					"description": "Determine which view should be shown when running Actions"
 				},
+				"code-for-ibmi.clearErrorsBeforeBuild": {
+					"type": "boolean",
+					"default": true,
+					"description": "When true, existing errors will be replaced with errors from the latest build. When false, errors will be appended to the existing list."
+				},
 				"code-for-ibmi.grepIgnoreDirs": {
 					"type": "array",
 					"items": {

src/api/errors/diagnostics.ts

@@ -69,7 +69,10 @@ export async function refreshDiagnosticsFromServer(instance: Instance, evfeventI
     const tableData = await content.getTable(evfeventInfo.library, `EVFEVENT`, evfeventInfo.object);
     const lines = tableData.map(row => String(row.EVFEVENT));
 
-    clearDiagnostics();
+    if (GlobalConfiguration.get(`clearErrorsBeforeBuild`)) {
+      // Clear all errors if the user has this setting enabled
+      clearDiagnostics();
+    }
 
     handleEvfeventLines(lines, instance, evfeventInfo);
   } else {
@@ -83,7 +86,10 @@ export async function refreshDiagnosticsFromLocal(instance: Instance, evfeventIn
     if (evfeventFiles) {
       const filesContent = await Promise.all(evfeventFiles.map(uri => vscode.workspace.fs.readFile(uri)));
 
-      clearDiagnostics();
+      if (GlobalConfiguration.get(`clearErrorsBeforeBuild`)) {
+        // Clear all errors if the user has this setting enabled
+        clearDiagnostics();
+      }
 
       for (const contentBuffer of filesContent) {
         const content = contentBuffer.toString();

src/api/errors/parser.ts

@@ -8,7 +8,7 @@ class EvfEventFileReader implements ISequentialFileReader {
   constructor(lines: string[]) {
     this.lines = lines;
   }
-
+f
   readNextLine(): string | undefined {
     const line = this.lines[this.index];
     if (line) {