Adding the no window decorations patch

README.md

@@ -15,6 +15,8 @@ Refer to [https://st.suckless.org/](https://st.suckless.org/) for details on the
 
 ### Changelog:
 
+2022-08-24 - Added the no window decorations patch
+
 2022-04-11 - Added the background image reload patch
 
 2022-03-10 - Added the background image patch
@@ -203,6 +205,9 @@ Refer to [https://st.suckless.org/](https://st.suckless.org/) for details on the
       - allows you to spawn a new st terminal using Ctrl-Shift-Return
       - it will have the same CWD (current working directory) as the original st instance
 
+   - no-window-decorations
+      - makes st show without window decorations if the WM supports it
+
    - [open-copied-url](https://st.suckless.org/patches/open_copied_url/)
       - open contents of the clipboard in a user-defined browser
 

patches.def.h

@@ -237,6 +237,14 @@
  */
 #define NEWTERM_PATCH 0
 
+/* This patch will set the _MOTIF_WM_HINTS property for the st window which, if the window manager
+ * respects it, will show the st window without window decorations.
+ *
+ * In dwm, if the decoration hints patch is applied, then the st window will start out without a
+ * border. In GNOME and KDE the window should start without a window title.
+ */
+#define NO_WINDOW_DECORATIONS_PATCH 0
+
 /* Open contents of the clipboard in a user-defined browser.
  * https://st.suckless.org/patches/open_copied_url/
  */

x.c

@@ -1580,6 +1580,13 @@ xinit(int cols, int rows)
 			PropModeReplace, (uchar *)&icon, LEN(icon));
 	#endif //NETWMICON_PATCH
 
+	#if NO_WINDOW_DECORATIONS_PATCH
+	Atom motifwmhints = XInternAtom(xw.dpy, "_MOTIF_WM_HINTS", False);
+	unsigned int data[] = { 0x2, 0x0, 0x0, 0x0, 0x0 };
+	XChangeProperty(xw.dpy, xw.win, motifwmhints, motifwmhints, 16,
+				PropModeReplace, (unsigned char *)data, 5);
+	#endif // NO_WINDOW_DECORATIONS_PATCH
+
 	xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
 	XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
 			PropModeReplace, (uchar *)&thispid, 1);