Add tag swapping script

herbstluftwm/.config/herbstluftwm/autostart

@@ -75,6 +75,8 @@ hc keybind $Mod-t spawn hlwm-run-or-raise Emacs \
    emacsclient --create-frame --alternate-editor=''
 # Lock the screen with C-M-l.
 hc keybind Control-Mod1-l spawn i3lock --color 000000
+# Swap visible tags
+hc keybind $Mod-x spawn hlwm-switch-tags
 
 # Since I use the colemak keyboard layout, hjkl doesn't make much
 # sense. I use neio instead since that is almost in the same place

herbstluftwm/usr/bin/hlwm-switch-tags

@@ -0,0 +1,48 @@
+#!/usr/local/bin/scsh \
+-o define-record-types -s
+!#
+;; hlwm-switch-tags --- Switch the currently visible tags
+;;
+;; Given there are two monitors, get the active tag for each and
+;; switch them around. This saves me the trouble of having to switch
+;; them manually.
+;;
+;; This script depends on herbstluftwm.
+
+(define-record-type monitor :monitor
+  (monitor id tag focus)
+  monitor?
+  (id monitor-id)
+  (tag monitor-tag)
+  (focus monitor-focused?))
+
+(define-record-discloser :monitor
+  (lambda (m) `(monitor ,(monitor-id m) ,(monitor-tag m) ,(monitor-focused? m))))
+
+(define (make-monitor str)
+  (let* ((re (rx bos (submatch (+ digit))
+                 ": "
+                 (+ digit) "x" (+ digit) "+" (+ digit) "+" (+ digit)
+                 " with tag \"" (submatch (+ any)) "\""
+                 (submatch (? " [FOCUS]")) eos))
+         (match (regexp-search re str)))
+    (monitor (string->number (match:substring match 1))
+             (match:substring match 2)
+             (> (string-length (match:substring match 3)) 0))))
+
+(define monitors
+  (map make-monitor (run/strings (herbstclient list_monitors))))
+
+(run (herbstclient lock))
+
+(run (herbstclient add switch_tmp))
+(run (herbstclient focus_monitor ,(monitor-id (car monitors))))
+(run (herbstclient use switch_tmp))
+(run (herbstclient focus_monitor ,(monitor-id (cadr monitors))))
+(run (herbstclient use ,(monitor-tag (car monitors))))
+(run (herbstclient focus_monitor ,(monitor-id (car monitors))))
+(run (herbstclient use ,(monitor-tag (cadr monitors))))
+(run (herbstclient focus_monitor ,(monitor-id (find monitor-focused? monitors))))
+(run (herbstclient merge_tag switch_tmp))
+
+(run (herbstclient unlock))