Function processAtMentionedFiles

src/utils/attachments.ts:1894–1964

(
  input: string,
  toolUseContext: ToolUseContext,
)

}

async function processAtMentionedFiles(
  input: string,
  toolUseContext: ToolUseContext,
): Promise<Attachment[]> {
  const files = extractAtMentionedFiles(input)
  if (files.length === 0) return []

  const appState = toolUseContext.getAppState()
  const results = await Promise.all(
    files.map(async file => {
      try {
        const { filename, lineStart, lineEnd } = parseAtMentionedFileLines(file)
        const absoluteFilename = expandPath(filename)

        if (
          isFileReadDenied(absoluteFilename, appState.toolPermissionContext)
        ) {
          return null
        }

        // Check if it's a directory
        try {
          const stats = await stat(absoluteFilename)
          if (stats.isDirectory()) {
            try {
              const entries = await readdir(absoluteFilename, {
                withFileTypes: true,
              })
              const MAX_DIR_ENTRIES = 1000
              const truncated = entries.length > MAX_DIR_ENTRIES
              const names = entries.slice(0, MAX_DIR_ENTRIES).map(e => e.name)
              if (truncated) {
                names.push(
                  `\u2026 and ${entries.length - MAX_DIR_ENTRIES} more entries`,
                )
              }
              const stdout = names.join('\n')
              logEvent('tengu_at_mention_extracting_directory_success', {})

              return {
                type: 'directory' as const,
                path: absoluteFilename,
                content: stdout,
                displayPath: relative(getCwd(), absoluteFilename),
              }
            } catch {
              return null
            }
          }
        } catch {
          // If stat fails, continue with file logic
        }

        return await generateFileAttachment(
          absoluteFilename,
          toolUseContext,
          'tengu_at_mention_extracting_filename_success',
          'tengu_at_mention_extracting_filename_error',