FT_INDEX_ATTACHMENTS=1 | Index all attachments without conversion filters. This method is fast but less reliable. This method works well for ASCII text files or file formats that contain mostly ASCII text. For other file formats, use of this option can cause unexpected or inaccurate search results for these reasons:
- Characters outside of the ASCII range are excluded from full-text indexing.
- There is no parsing of structured data, so, for example, indexing an HTML attachment also indexes structural elements in addition to ASCII text.
- ASCII text tokens are extracted from binary file attachments which can give unexpected search results.
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