eintr: copy-region-as-kill body
8.3.1 The Body of ‘copy-region-as-kill’
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The ‘copy-region-as-kill’ function works in much the same way as the
‘kill-region’ function. Both are written so that two or more kills in a
row combine their text into a single entry. If you yank back the text
from the kill ring, you get it all in one piece. Moreover, kills that
kill forward from the current position of the cursor are added to the
end of the previously copied text and commands that copy text backwards
add it to the beginning of the previously copied text. This way, the
words in the text stay in the proper order.
Like ‘kill-region’, the ‘copy-region-as-kill’ function makes use of
the ‘last-command’ variable that keeps track of the previous Emacs
command.
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