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The body of the
zap-to-char function contains the code that
kills (that is, removes) the text in the region from the current
position of the cursor up to and including the specified character.
The first part of the code looks like this:
(kill-region (point) ...
(point) is the current position of the cursor.
The next part of the code is an expression using
progn. The body
progn consists of calls to
It is easier to understand how
progn works after learning about
search-forward, so we will look at
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