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#!/usr/local/bin/scsh \
-o srfi-2 -s
!#
(define client-regexp
(rx " " (submatch "0x" (** 6 7 hex))))
(define current-client
(run/string (herbstclient -n attr clients.focus.winid)))
(define (extract-client-id potential-client)
(and-let* ((matched (regexp-search client-regexp potential-client)))
(match:substring matched 1)))
(define (compact lst)
"Filter #f values from LST."
(filter (lambda (x) x) lst))
(define clients
(compact (map extract-client-id
(run/strings (herbstclient attr clients)))))
(define (client-class client-id)
(let ((path (string-append "clients." client-id ".class")))
(run/string (herbstclient -n attr ,path))))
(define clients-with-class
(map (lambda (client)
(cons client (client-class client)))
clients))
(define classed-clients
(map car
(filter (lambda (client-and-class)
(string= (cdr client-and-class)
(car command-line-arguments)))
clients-with-class)))
(define (next-client)
(and-let* ((tail (member current-client classed-clients)))
(cdr tail)))
(define new-client
(let ((next (next-client)))
(if (or (not next) (null? next))
(car (or (and (not (null? classed-clients)) classed-clients) '(#f)))
(car next))))
(if new-client
(run (herbstclient jumpto ,new-client))
(exec-epf (,@(cdr command-line-arguments))))
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