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History of 2015-09-12 A trick with argument for interactive call

2015-09-12
		06:18 UTC Revision 1 . . . . Marcin Borkowski – Today’s post will be quite technical, but it might be useful for someone, so I’m sharing what I have learned some time ago. Assume that you are writing a command which should take two parameters. When called interactively, it should ask for both of them in the minibuffer. However (and here the tricky part comes), you want the prompt for the second one to include the first one.