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On python, you can repeat a value several times inside a string when formatting it:

>>> print "Hello, {name}, how are you, {name}?".format(name="George") "Hello, George, how are you, George?"

But I don't know how to achieve this with elisp. I'm trying to make a function that returns the GPLv3 copyright text (This file is part of Foobar. Foobar is free software:) with the name of any projectile project on it.

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  • A simpler answer to the title of the question itself without the “named” string substitution part: format supports specifying the number of a field. That is, (format "%1$d, %1$d, %2$d, %2$d" 5 7) evaluates to "5, 5, 7, 7". See M-x describe-function of format. Commented Jan 9 at 12:00

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(let ((name "George")) (format "%s" (concat "Hello, " name ", how are you, " name "?")))
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