🚀 go-pugleaf

In article <ACEVEDO.91Apr14134830@hydrox-cookie.mit.edu> acevedo@athena.mit.edu (Gabriel) writes:
>
> => Anyone have a GNU implementation of the Atom Query Replace command
> => available with ZEMACS on the Symbolics Lisp Machines?  In case you
> => are wondering, this command only replaces atoms, and is great for
> => renaming variables in code.  Thanks in advance...Jeff
>
>No that I know of, but you can easily simulate it with regular
>expressions and syntax tables. An "atom" is basically a non-symbol
>character, followed by a word, followed by another non-symbol character.

However you can't use syntax codes to distinguish an atom from the contents
of a string, e.g. the Zmacs command lets you change all occurences of
MAXIMUM to MAX-VALUE in the following, without modifying the string:
   
    (defun print-max (maximum)
       (format t "~&The maximum value is ~d." maximum))

You could probably do the equivalent in Elisp fairly neatly by interleaving
regexp searches with calls to PARSE-PARTIAL-SEXP to check what state the
point is in, but it would take some work to get right.
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Pete Halverson                        		    INET: halverson@crd.ge.com 
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