From 526a0bf71173c42b71a34e5a787fb086a84b3c5c Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <doug@douglasrumbaugh.com>
Date: Fri, 2 Dec 2022 22:39:46 -0500
Subject: Improved tag-0 behavior

Displaying tag 0 now triggers on all attached monitors, and leaving it
on any monitor reverts all other back to their original configuration
---
 dwm.c | 43 +++++++++++++++++++++++++++++++++++++++----
 1 file changed, 39 insertions(+), 4 deletions(-)

(limited to 'dwm.c')

diff --git a/dwm.c b/dwm.c
index 5046d2d..694c772 100644
--- a/dwm.c
+++ b/dwm.c
@@ -268,6 +268,7 @@ static void updatetitle(Client *c);
 static void updatewindowtype(Client *c);
 static void updatewmhints(Client *c);
 static void view(const Arg *arg);
+static void view_t0(const Arg *arg);
 static Client *wintoclient(Window w);
 static Monitor *wintomon(Window w);
 static int xerror(Display *dpy, XErrorEvent *ee);
@@ -2449,16 +2450,30 @@ view(const Arg *arg)
 
 	if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
 		return;
+
+
+    if (selmon->pertag->curtag == 0 && arg->ui != 0) {
+        Monitor *oldmon = selmon;
+        for (Monitor *m = mons; m; m = m->next) {
+            if (m != oldmon) {
+                selmon = m;
+                Arg tmp = {0};
+                view(&tmp);
+            }
+        }
+
+        selmon = oldmon;
+    }
+
 	selmon->seltags ^= 1; /* toggle sel tagset */
 	if (arg->ui & TAGMASK) {
-		selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
-		selmon->pertag->prevtag = selmon->pertag->curtag;
 
 		if (arg->ui == ~0) {
-			selmon->pertag->curtag = 0;
-            selmon->tagset[selmon->seltags] ^= SPTAGMASK;
+            view_t0(arg);
         }
 		else {
+            selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
+            selmon->pertag->prevtag = selmon->pertag->curtag;
 			for (i = 0; !(arg->ui & 1 << i); i++) ;
 			selmon->pertag->curtag = i + 1;
 		}
@@ -2481,6 +2496,26 @@ view(const Arg *arg)
 	arrange(selmon);
 }
 
+void
+view_t0(const Arg *arg) 
+{
+    Monitor *oldmon = selmon;
+    for (Monitor *m = mons; m; m = m->next) {
+        selmon = m;
+		selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
+		selmon->pertag->prevtag = selmon->pertag->curtag;
+        selmon->pertag->curtag = 0;
+        selmon->tagset[selmon->seltags] ^= SPTAGMASK;
+        // Force set the layout to grid when viewing
+        // all tags
+        Arg tmp;
+        tmp.v = &layouts[7];
+        setlayout(&tmp);
+    }
+
+    selmon = oldmon;
+}
+
 pid_t
 winpid(Window w)
 {
-- 
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