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5.2 The Definition of insert-buffer

insert-buffer is yet another buffer-related function. This command copies another buffer into the current buffer. It is the reverse of append-to-buffer or copy-to-buffer, since they copy a region of text from the current buffer to another buffer.

Here is a discussion based on the original code. The code was simplified in 2003 and is harder to understand.

(See New Body for insert-buffer, to see a discussion of the new body.)

In addition, this code illustrates the use of interactive with a buffer that might be read-only and the important distinction between the name of an object and the object actually referred to.