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# IndexLuaScript

The path to a Lua script to run on documents before they are indexed. You can use a Lua script to manipulate the documents before they are indexed.

If you set this parameter for a single indexing task, modifications to documents do not affect the same documents passed to other indexes.

The script must define a `handler` function:

    function handler(document, operation)
         -- do something
         return true
     end

The `operation` argument specifies the documents on which you want to run the script. This argument is a string that you can set to `add`, `update`, or `remove`.

To index the document the `handler` function must return `true`. To discard the document, return `false`.

Type: | String
Default: |
Required: | No
Configuration Section: | Any section specified by `IndexerSectionN` or Indexing
Example: | `IndexLuaScript=index.lua`
See Also: |

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