Re: How can I enter query-replace in GNU Emacs using a repeatable function based on values in the line currently at point. - Super User

[Fren Zeee <frenzeee@gmail.com>]

On Jun 24, 12:38 am, bolega <gnuist...@gmail.com> wrote:
> On Jun 21, 9:18 am, Tim Visher <tim.vis...@gmail.com> wrote:
>
>
>
> > On Mon, Jun 21, 2010 at 11:00 AM, Tim Landscheidt
>
> > <t...@tim-landscheidt.de> wrote:
> > > Tim Visher <tim.vis...@gmail.com> wrote:
>
> > >> I'd like to take the following data and query-replace occurences of
> > >> each word identifier with the corresponding numeric identifier using
> > >> some sort of repeatable function.
>
> > >>     -1 ACT/CNS
> > >>     -2 AG NFC
> > >>     -3 AID
> > >>     -4 BBG
> > >>     -5 BIA
> > >>     -6 BLM
> > >>     -7 BOC
> > >>     -8 BPD
> > >>     -9 CCC
> > >>     -10 CDC
> > >>     -11 Census
>
> > >> In other words, with point at
>
> > >>     -1 ACT/CNS
> > >>     ^
>
> > >> I'd like to be able to hit a key and launch into the following command
>
> > >>     query-replace RET ACT/CNS RET -1 RET
> > >> [...]
>
> > > From my experience, the easiest way to do that is to copy
> > > the lines to a temporary buffer, hack up a small lisplet:
>
> > > | (dolist (line '(("-1"  "ACT/CNS")
> > > |                 ("-2"  "AG NFC")
> > > |                 ("-3"  "AID")
> > > |                 ("-4"  "BBG")
> > > |                 ("-5"  "BIA")
> > > |                 ("-6"  "BLM")
> > > |                 ("-7"  "BOC")
> > > |                 ("-8"  "BPD")
> > > |                 ("-9"  "CCC")
> > > |                 ("-10" "CDC")
> > > |                 ("-11" "Census")))
> > > |   (query-replace (car line) (cdr line) nil (point-min) (point-max)))
>
> > > and then evaluate that in the original buffer with M-x :.
>
> > >  While it is possible to create a proper "one-key command"
> > > as you intended, chances are that it is very cumbersome and
> > > that you will have to change it soon afterwards when your
> > > requirements shift just a little bit. Directly programming
> > > in Emacs Lisp is much easier and more flexible.
>
> > > Tim
>
> > That worked perfectly. Thanks, Tim.
>
> > --
>
> > In Christ,
>
> Its new for me so I write the documentation here
>
> (defmacro dolist (spec &rest body)
>   "(dolist (VAR LIST [RESULT]) BODY...): loop over a list.
> Evaluate BODY with VAR bound to each `car' from LIST, in turn.
> Then evaluate RESULT to get return value, default nil."
>   (let ((temp (gensym "--dolist-temp--")))
>     (list 'block nil
>           (list* 'let (list (list temp (nth 1 spec)) (car spec))
>                  (list* 'while temp (list 'setq (car spec) (list 'car temp))
>                         (append body (list (list 'setq temp
>                                                  (list 'cdr temp)))))
>                  (if (cdr (cdr spec))
>                      (cons (list 'setq (car spec) nil) (cdr (cdr spec)))
>                    '(nil))))))
>
> I think the readability and rememberability would be improved by
> writing it as
>
> (dolist
>  (foreach
>   '( ("" "")
>      ("" "")
>      ("" "")))
>   (save-excursion (replace-string (car foreach) (cdr foreach))))
>
> Bolega

better to use

eachpair

than

foreach