disable markdown rendering of shell tool output (#625)

packages/cli/src/ui/components/messages/ToolGroupMessage.tsx

@@ -72,6 +72,7 @@ export const ToolGroupMessage: React.FC<ToolGroupMessageProps> = ({
                       ? 'low'
                       : 'medium'
                 }
+                renderOutputAsMarkdown={tool.renderOutputAsMarkdown}
               />
             </Box>
             {tool.status === ToolCallStatus.Confirming &&

packages/cli/src/ui/components/messages/ToolMessage.tsx

@@ -21,6 +21,7 @@ export type TextEmphasis = 'high' | 'medium' | 'low';
 export interface ToolMessageProps extends IndividualToolCallDisplay {
   availableTerminalHeight: number;
   emphasis?: TextEmphasis;
+  renderOutputAsMarkdown?: boolean;
 }
 
 export const ToolMessage: React.FC<ToolMessageProps> = ({
@@ -30,6 +31,7 @@ export const ToolMessage: React.FC<ToolMessageProps> = ({
   status,
   availableTerminalHeight,
   emphasis = 'medium',
+  renderOutputAsMarkdown = true,
 }) => {
   const contentHeightEstimate =
     availableTerminalHeight - STATIC_HEIGHT - RESERVED_LINE_COUNT;
@@ -76,15 +78,22 @@ export const ToolMessage: React.FC<ToolMessageProps> = ({
                 </Text>
               </Box>
             )}
-            {typeof displayableResult === 'string' && (
-              <Box flexDirection="column">
-                <MarkdownDisplay
-                  text={displayableResult}
-                  isPending={false}
-                  availableTerminalHeight={availableTerminalHeight}
-                />
-              </Box>
-            )}
+            {typeof displayableResult === 'string' &&
+              renderOutputAsMarkdown && (
+                <Box flexDirection="column">
+                  <MarkdownDisplay
+                    text={displayableResult}
+                    isPending={false}
+                    availableTerminalHeight={availableTerminalHeight}
+                  />
+                </Box>
+              )}
+            {typeof displayableResult === 'string' &&
+              !renderOutputAsMarkdown && (
+                <Box flexDirection="column">
+                  <Text>{displayableResult}</Text>
+                </Box>
+              )}
             {typeof displayableResult !== 'string' && (
               <DiffRenderer
                 diffContent={displayableResult.fileDiff}

packages/cli/src/ui/hooks/useToolScheduler.ts

@@ -541,6 +541,18 @@ export function mapToDisplay(
 ): HistoryItemToolGroup {
   const tools = Array.isArray(tool) ? tool : [tool];
   const toolsDisplays = tools.map((t): IndividualToolCallDisplay => {
+    // Determine if markdown rendering should be skipped for this tool
+    let renderOutputAsMarkdown = true; // Default to true
+    if (t.status === 'error') {
+      // For errors, the tool object might not be available, so check t.request.name
+      if (t.request.name === 'execute_bash_command') {
+        renderOutputAsMarkdown = false;
+      }
+    } else if ('tool' in t && t.tool?.name === 'execute_bash_command') {
+      // For other statuses, check t.tool.name if tool exists
+      renderOutputAsMarkdown = false;
+    }
+
     switch (t.status) {
       case 'success':
         return {
@@ -550,15 +562,17 @@ export function mapToDisplay(
           resultDisplay: t.response.resultDisplay,
           status: mapStatus(t.status),
           confirmationDetails: undefined,
+          renderOutputAsMarkdown,
         };
       case 'error':
         return {
           callId: t.request.callId,
-          name: t.request.name,
-          description: '',
+          name: t.request.name, // Use request.name as tool might be undefined
+          description: '', // No description available if tool is undefined
           resultDisplay: t.response.resultDisplay,
           status: mapStatus(t.status),
           confirmationDetails: undefined,
+          renderOutputAsMarkdown,
         };
       case 'cancelled':
         return {
@@ -568,6 +582,7 @@ export function mapToDisplay(
           resultDisplay: t.response.resultDisplay,
           status: mapStatus(t.status),
           confirmationDetails: undefined,
+          renderOutputAsMarkdown,
         };
       case 'awaiting_approval':
         return {
@@ -577,6 +592,7 @@ export function mapToDisplay(
           resultDisplay: undefined,
           status: mapStatus(t.status),
           confirmationDetails: t.confirmationDetails,
+          renderOutputAsMarkdown,
         };
       case 'executing':
         return {
@@ -586,6 +602,7 @@ export function mapToDisplay(
           resultDisplay: t.liveOutput ?? undefined,
           status: mapStatus(t.status),
           confirmationDetails: undefined,
+          renderOutputAsMarkdown,
         };
       case 'validating': // Add this case
         return {
@@ -595,6 +612,7 @@ export function mapToDisplay(
           resultDisplay: undefined,
           status: mapStatus(t.status),
           confirmationDetails: undefined,
+          renderOutputAsMarkdown,
         };
       case 'scheduled':
         return {
@@ -604,6 +622,7 @@ export function mapToDisplay(
           resultDisplay: undefined,
           status: mapStatus(t.status),
           confirmationDetails: undefined,
+          renderOutputAsMarkdown,
         };
       default: {
         // ensures every case is checked for above

packages/cli/src/ui/types.ts

@@ -49,6 +49,7 @@ export interface IndividualToolCallDisplay {
   resultDisplay: ToolResultDisplay | undefined;
   status: ToolCallStatus;
   confirmationDetails: ToolCallConfirmationDetails | undefined;
+  renderOutputAsMarkdown?: boolean;
 }
 
 export interface HistoryItemBase {