Adding the patch of David Dufberg Töttrup to implement WM_DELETE_WINDOW. Thank you!

diff --git a/st.c b/st.c
index 7ae9d8c..1ac7fde 100644 (file)
--- a/st.c
+++ b/st.c
@@ -197,7 +197,7 @@ typedef struct {
        Colormap cmap;
        Window win;
        XdbeBackBuffer buf;
-       Atom xembed;
+       Atom xembed, wmdeletewin;
        XIM xim;
        XIC xic;
        XftDraw *xft_draw;
@@ -850,12 +850,15 @@ execsh(void) {
 void
 sigchld(int a) {
        int stat = 0;
+
        if(waitpid(pid, &stat, 0) < 0)
                die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
-       if(WIFEXITED(stat))
+
+       if(WIFEXITED(stat)) {
                exit(WEXITSTATUS(stat));
-       else
+       } else {
                exit(EXIT_FAILURE);
+       }
 }
 
 void
@@ -2173,6 +2176,8 @@ xinit(void) {
                &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
 
        xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
+       xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
+       XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
 
        xresettitle();
        XMapWindow(xw.dpy, xw.win);
@@ -2475,6 +2480,10 @@ cmessage(XEvent *e) {
                } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
                        xw.state &= ~WIN_FOCUSED;
                }
+       } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
+               /* Send SIGHUP to shell */
+               kill(pid, SIGHUP);
+               exit(EXIT_SUCCESS);
        }
 }