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Replacement Commands

   Global search-and-replace operations are not needed as often in Emacs
as they are in other editors(1), but they are available.  In addition
to the simple `M-x replace-string' command which is like that found in
most editors, there is a `M-x query-replace' command which asks you, for
each occurrence of the pattern, whether to replace it.

   The replace commands all replace one string (or regexp) with one
replacement string.  It is possible to perform several replacements in
parallel using the command `expand-region-abbrevs'.  Note: Expanding

* Unconditional Replace
Replacing all matches for a string.
* Regexp Replace
Replacing all matches for a regexp.
* Replacement and Case
How replacements preserve case of letters.
* Query Replace
How to use querying.
   ---------- Footnotes ----------

   (1)  In some editors, search-and-replace operations are the only
convenient way to make a single change in the text.

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