From: gnuist007@hotmail.com (gnuist)
Subject: ** Q: HOW TO MANIPULATE STRINGS IN A FILE WITH A LISP FUNCTION **
Date: 15 Sep 2002 20:30:17 -0700 [thread overview]
Message-ID: <9e8ebeb2.0209151930.79f76ae9@posting.google.com> (raw)
My problem is very simple for an emacs guru. More than one solution is
very welcome.
I have a list of numbers in a file as follows:
ABC98789
DDE90898889
FRE9090909
that is, first three letters and then a string of numbers and nothing else.
I want to write a lisp function (not a macro) that can read the first
three letter substring into a variable and the rest of the substring into
another variable. Then I want to use these substrings to generate my
final string. I know that can be done using the "insert" command. The problem
is how to put the text strings in a file into a variable? I know setq can
do this but then if I construct the string in sexp such as:
(setq letters-variable "ABC")
how do I eval it? I have tried eval-last-sexp IN THE LISP FUNCTION
and it gives some strange result in the minibuffer when the function is run.
Any and all help is appreciated.
With a macro using C-k and yank this is trivial but the kill buffer can only
hold (memorize) one piece at a time not the two pieces. Still it can be done
by moving to the two lines where they are separately held, but it is not a
readible solution. It is at the turing machine level of copy and erase one
at a time, not store in named variables.
Once I have written this function for one string, I can run it on the
whole list by C-u 3 M-x my-function.
Cheers
next reply other threads:[~2002-09-16 3:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-16 3:30 gnuist [this message]
2002-09-16 13:07 ` ** Q: HOW TO MANIPULATE STRINGS IN A FILE WITH A LISP FUNCTION ** D. Goel
2002-09-17 17:49 ` Barry Margolin
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