fix: address PR review feedback

- Refactored showSuggestions from state variable to constant SHOW_SUGGESTIONS
- Renamed breakingExps to stopPatterns for better clarity
- Added test coverage for edge cases in command parsing
- Fixed test assertion for multiline content handling

Author: roomote

webview-ui/src/components/chat/CommandExecution.tsx

@@ -50,7 +50,8 @@ export const CommandExecution = ({ executionId, text, icon, title }: CommandExec
 	const [isExpanded, setIsExpanded] = useState(terminalShellIntegrationDisabled)
 	const [streamingOutput, setStreamingOutput] = useState("")
 	const [status, setStatus] = useState<CommandExecutionStatus | null>(null)
-	const showSuggestions = true
+	// Show suggestions is always enabled for command pattern management
+	const SHOW_SUGGESTIONS = true
 
 	// The command's output can either come from the text associated with the
 	// task message (this is the case for completed commands) or from the
@@ -195,7 +196,7 @@ export const CommandExecution = ({ executionId, text, icon, title }: CommandExec
 					<CodeBlock source={command} language="shell" />
 					<OutputContainer isExpanded={isExpanded} output={output} />
 				</div>
-				{showSuggestions && commandPatterns.length > 0 && (
+				{SHOW_SUGGESTIONS && commandPatterns.length > 0 && (
 					<CommandPatternSelector
 						patterns={commandPatterns}
 						allowedCommands={allowedCommands}

webview-ui/src/components/chat/__tests__/CommandExecution.spec.tsx

@@ -412,5 +412,56 @@ Suggested patterns: npm, npm test, npm run
 			expect(conflictState.setAllowedCommands).toHaveBeenCalledWith(["git", "git push"])
 			expect(conflictState.setDeniedCommands).toHaveBeenCalledWith([])
 		})
+
+		it("should handle commands that cannot be parsed and fallback gracefully", () => {
+			// Test with a command that might cause parsing issues
+			const unparsableCommand = "echo 'test with unclosed quote"
+
+			render(
+				<ExtensionStateWrapper>
+					<CommandExecution executionId="test-12" text={unparsableCommand} />
+				</ExtensionStateWrapper>,
+			)
+
+			// Should still render the command
+			expect(screen.getByTestId("code-block")).toHaveTextContent("echo 'test with unclosed quote")
+
+			// Should show pattern selector with at least the main command
+			expect(screen.getByTestId("command-pattern-selector")).toBeInTheDocument()
+			expect(screen.getByText("echo")).toBeInTheDocument()
+		})
+
+		it("should handle empty or whitespace-only commands", () => {
+			render(
+				<ExtensionStateWrapper>
+					<CommandExecution executionId="test-13" text="   " />
+				</ExtensionStateWrapper>,
+			)
+
+			// Should render without errors
+			expect(screen.getByTestId("code-block")).toBeInTheDocument()
+
+			// Should not show pattern selector for empty commands
+			expect(screen.queryByTestId("command-pattern-selector")).not.toBeInTheDocument()
+		})
+
+		it("should handle commands with only output and no command prefix", () => {
+			const outputOnly = `Some output without a command
+Multiple lines of output
+Without any command prefix`
+
+			render(
+				<ExtensionStateWrapper>
+					<CommandExecution executionId="test-14" text={outputOnly} />
+				</ExtensionStateWrapper>,
+			)
+
+			// Should treat the entire text as command when no prefix is found
+			const codeBlock = screen.getByTestId("code-block")
+			// The mock CodeBlock component renders text content without preserving newlines
+			expect(codeBlock.textContent).toContain("Some output without a command")
+			expect(codeBlock.textContent).toContain("Multiple lines of output")
+			expect(codeBlock.textContent).toContain("Without any command prefix")
+		})
 	})
 })

webview-ui/src/utils/commandPatterns.ts

@@ -52,12 +52,12 @@ function processCommand(cmd: any[], patterns: Set<string>) {
 	patterns.add(mainCmd)
 
 	// Patterns that indicate we should stop looking for subcommands
-	const breakingExps = [/^-/, /[\\/.~ ]/]
+	const stopPatterns = [/^-/, /[\\/.~ ]/]
 
 	// Build up patterns progressively
 	for (let i = 1; i < cmd.length; i++) {
 		const arg = cmd[i]
-		if (typeof arg !== "string" || breakingExps.some((re) => re.test(arg))) break
+		if (typeof arg !== "string" || stopPatterns.some((re) => re.test(arg))) break
 
 		const pattern = cmd.slice(0, i + 1).join(" ")
 		patterns.add(pattern)