Revert #6088 (#6328)

packages/core/src/tools/shell.ts

@@ -97,8 +97,6 @@ class ShellToolInvocation extends BaseToolInvocation<
   async execute(
     signal: AbortSignal,
     updateOutput?: (output: string) => void,
-    terminalColumns?: number,
-    terminalRows?: number,
   ): Promise<ToolResult> {
     const strippedCommand = stripShellWrapper(this.params.command);
 
@@ -131,7 +129,9 @@ class ShellToolInvocation extends BaseToolInvocation<
         this.params.directory || '',
       );
 
-      let cumulativeOutput = '';
+      let cumulativeStdout = '';
+      let cumulativeStderr = '';
+
       let lastUpdateTime = Date.now();
       let isBinaryStream = false;
 
@@ -148,9 +148,15 @@ class ShellToolInvocation extends BaseToolInvocation<
 
           switch (event.type) {
             case 'data':
-              if (isBinaryStream) break;
-              cumulativeOutput = event.chunk;
-              currentDisplayOutput = cumulativeOutput;
+              if (isBinaryStream) break; // Don't process text if we are in binary mode
+              if (event.stream === 'stdout') {
+                cumulativeStdout += event.chunk;
+              } else {
+                cumulativeStderr += event.chunk;
+              }
+              currentDisplayOutput =
+                cumulativeStdout +
+                (cumulativeStderr ? `\n${cumulativeStderr}` : '');
               if (Date.now() - lastUpdateTime > OUTPUT_UPDATE_INTERVAL_MS) {
                 shouldUpdate = true;
               }
@@ -181,8 +187,6 @@ class ShellToolInvocation extends BaseToolInvocation<
           }
         },
         signal,
-        terminalColumns,
-        terminalRows,
       );
 
       const result = await resultPromise;
@@ -214,7 +218,7 @@ class ShellToolInvocation extends BaseToolInvocation<
       if (result.aborted) {
         llmContent = 'Command was cancelled by user before it could complete.';
         if (result.output.trim()) {
-          llmContent += ` Below is the output before it was cancelled:\n${result.output}`;
+          llmContent += ` Below is the output (on stdout and stderr) before it was cancelled:\n${result.output}`;
         } else {
           llmContent += ' There was no output before it was cancelled.';
         }
@@ -228,7 +232,8 @@ class ShellToolInvocation extends BaseToolInvocation<
         llmContent = [
           `Command: ${this.params.command}`,
           `Directory: ${this.params.directory || '(root)'}`,
-          `Output: ${result.output || '(empty)'}`,
+          `Stdout: ${result.stdout || '(empty)'}`,
+          `Stderr: ${result.stderr || '(empty)'}`,
           `Error: ${finalError}`, // Use the cleaned error string.
           `Exit Code: ${result.exitCode ?? '(none)'}`,
           `Signal: ${result.signal ?? '(none)'}`,