Fourth and fifth arg START and END specify the region to operate on.
-In TO-STRING, `\\&' or `\\0' stands for whatever matched the whole of
-REGEXP, and `\\=\\N' (where N is a digit) stands for whatever matched
+In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
+and `\\=\\N' (where N is a digit) stands for whatever matched
the Nth `\\(...\\)' (1-based) in REGEXP. The `\\(...\\)' groups are
counted from 1.
`\\?' lets you edit the replacement text in the minibuffer
Fourth and fifth arg START and END specify the region to operate on.
-In TO-STRING, `\\&' or `\\0' stands for whatever matched the whole of
-REGEXP, and `\\=\\N' (where N is a digit) stands for
-whatever matched the Nth `\\(...\\)' (1-based) in REGEXP.
+In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
+and `\\=\\N' (where N is a digit) stands for whatever matched
+the Nth `\\(...\\)' (1-based) in REGEXP.
`\\?' lets you edit the replacement text in the minibuffer
at the given position for each replacement.
text. Inside of that expression, `\\&' is a string denoting the
whole match, `\\N' a partial match, `\\#&' and `\\#N' the respective
numeric values from `string-to-number', and `\\#' itself for
-`replace-count', the number of replacements occurred so far.
+`replace-count', the number of replacements occurred so far, starting
+from zero.
If your Lisp expression is an identifier and the next letter in
the replacement string would be interpreted as part of it, you