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5.7.2 Invoking Guile Actions

Guile actions are invoked from the RULE section using the guile-process command. Its syntax is:

Scheme Function: function args



The name of the Guile function to be invoked.


Additional arguments. These are passed to the function as its third argument (rest).

To pass keyword arguments to the function, use the usual Scheme notation: `#:key'.

As an example, let's consider the invocation of the fix-subject function, defined in the previous subsection:

guile-process fix-subject <<-EOT
                                Kind regards,
                                Antonius Block

In this example, the additional argument (a string of three lines) is passed to the function, which will add it to the message of the body.

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