Adding swaptags patch

README.md

@@ -15,6 +15,8 @@ Refer to [https://dwm.suckless.org/](https://dwm.suckless.org/) for details on t
 
 ### Changelog:
 
+2020-02-11 - Added swaptags patch
+
 2020-02-09 - Added alternative scratchpad patch
 
 2020-02-02 - Added fsignal and transferall patches
@@ -313,6 +315,9 @@ Refer to [https://dwm.suckless.org/](https://dwm.suckless.org/) for details on t
    - [swapfocus](https://dwm.suckless.org/patches/swapfocus/)
       - this patch depends on the pertag patch and makes it possible to switch focus with a single shortcut (mod-s) instead of having to think if you should use mod-j or mod-k for reaching the previously used window
 
+   - [swaptags](https://dwm.suckless.org/patches/swaptags/)
+      - allows swapping the contents of the currently selected tag with another tag by using keyboard shortcuts
+
    - [switchcol](https://dwm.suckless.org/patches/switchcol/)
       - allows you to switch focus between the master and stack columns using a single keybinding
 

config.def.h

@@ -514,13 +514,15 @@ static const Layout layouts[] = {
 	{ MODKEY,                       KEY,      comboview,      {.ui = 1 << TAG} }, \
 	{ MODKEY|ControlMask,           KEY,      toggleview,     {.ui = 1 << TAG} }, \
 	{ MODKEY|ShiftMask,             KEY,      combotag,       {.ui = 1 << TAG} }, \
-	{ MODKEY|ControlMask|ShiftMask, KEY,      toggletag,      {.ui = 1 << TAG} },
+	{ MODKEY|ControlMask|ShiftMask, KEY,      toggletag,      {.ui = 1 << TAG} }, \
+	{ MODKEY|Mod4Mask|ShiftMask,    KEY,      swaptags,       {.ui = 1 << TAG} },
 #else
 #define TAGKEYS(KEY,TAG) \
 	{ MODKEY,                       KEY,      view,           {.ui = 1 << TAG} }, \
 	{ MODKEY|ControlMask,           KEY,      toggleview,     {.ui = 1 << TAG} }, \
 	{ MODKEY|ShiftMask,             KEY,      tag,            {.ui = 1 << TAG} }, \
-	{ MODKEY|ControlMask|ShiftMask, KEY,      toggletag,      {.ui = 1 << TAG} },
+	{ MODKEY|ControlMask|ShiftMask, KEY,      toggletag,      {.ui = 1 << TAG} }, \
+	{ MODKEY|Mod4Mask|ShiftMask,    KEY,      swaptags,       {.ui = 1 << TAG} },
 #endif // COMBO_PATCH
 
 #if HOLDBAR_PATCH

patch/include.c

@@ -113,6 +113,9 @@
 #if SWAPFOCUS_PATCH && PERTAG_PATCH
 #include "swapfocus.c"
 #endif
+#if SWAPTAGS_PATCH
+#include "swaptags.c"
+#endif
 #if SWITCHCOL_PATCH
 #include "switchcol.c"
 #endif

patch/include.h

@@ -113,6 +113,9 @@
 #if SWAPFOCUS_PATCH && PERTAG_PATCH
 #include "swapfocus.h"
 #endif
+#if SWAPTAGS_PATCH
+#include "swaptags.h"
+#endif
 #if SWITCHCOL_PATCH
 #include "switchcol.h"
 #endif

patch/swaptags.c

@@ -0,0 +1,22 @@
+void
+swaptags(const Arg *arg)
+{
+   unsigned int newtag = arg->ui & TAGMASK;
+   unsigned int curtag = selmon->tagset[selmon->seltags];
+
+   if (newtag == curtag || !curtag || (curtag & (curtag-1)))
+       return;
+
+   for (Client *c = selmon->clients; c != NULL; c = c->next) {
+       if ((c->tags & newtag) || (c->tags & curtag))
+           c->tags ^= curtag ^ newtag;
+
+       if (!c->tags)
+       		c->tags = newtag;
+   }
+
+   selmon->tagset[selmon->seltags] = newtag;
+
+   focus(NULL);
+   arrange(selmon);
+}

patch/swaptags.h

@@ -0,0 +1 @@
+static void swaptags(const Arg *arg);

patches.def.h

@@ -468,6 +468,12 @@
  */
 #define SWAPFOCUS_PATCH 0
 
+/* This patch allows swapping the contents of the currently selected tag with another tag using
+ * keyboard shortcuts.
+ * https://dwm.suckless.org/patches/swaptags/
+ */
+#define SWAPTAGS_PATCH 0
+
 /* Switch focus between the master and stack columns using a single keybinding.
  * https://dwm.suckless.org/patches/switchcol/
  */