14.2.4 Output Recording Streams

14.2.4.1 The Output Recording Stream Protocol

stream-recording-p [Generic Function]

Arguments:

stream

Summary:

Returns t when the output recording stream stream is recording all output performed to it; otherwise, it returns nil.

Arguments:

recording-p stream

Summary:

Changes the state of stream-recording-p to be recording-p, which must be either t or nil.

Arguments:

stream

Summary:

Returns t when the output recording stream stream will actually draw on the viewport when output is being performed to it; otherwise, it returns nil.

Arguments:

drawing-p stream

Summary:

Changes the state of stream-recording-p to be drawing-p, which must be either t or nil.

Arguments:

stream

Summary:

Returns the history (or top-level output record) for the output recording stream stream.

Arguments:

stream

Summary:

The current "open" output record for the output recording stream stream, to which stream-add-output-record will add a new child record. Initially, this is the same as stream-output-history. As nested output records are created, this acts as a "stack."

Arguments:

record stream

Summary:

Sets the current "open" output record for the output recording stream stream to the output record record.

Arguments:

stream record

Summary:

Adds the output record record to the current output record on the output recording stream stream. (The current output record is the output record returned by stream-current-output-record.)

Arguments:

stream&optional region

Summary:

Directs the output recording stream stream to invoke replay on its output history. Only those records that overlap the region region (which defaults to the viewport of the stream) are replayed.

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