Only grab when needed

We don't want to initially grab chord at level one and up as it will
have unwanted side effects, the following:
    super + a ; {0-9}
        echo foo
will swallow key press events for the number keys, and pressing '32' in
an Inkscape text field will result in the following input: '23'.

Sourcedeps

@@ -2,4 +2,4 @@ grab.o: grab.c grab.h helpers.h parse.h sxhkd.h types.h
 helpers.o: helpers.c helpers.h sxhkd.h types.h
 parse.o: parse.c helpers.h locales.h parse.h sxhkd.h types.h
 sxhkd.o: sxhkd.c grab.h helpers.h parse.h sxhkd.h types.h
-types.o: types.c helpers.h parse.h sxhkd.h types.h
+types.o: types.c grab.h helpers.h parse.h sxhkd.h types.h

grab.c

@@ -6,8 +6,7 @@
 void grab(void)
 {
     for (hotkey_t *hk = hotkeys; hk != NULL; hk = hk->next)
-        for (chord_t *chord = hk->chain->head; chord != NULL; chord = chord->next)
-            grab_chord(chord);
+        grab_chord(hk->chain->head);
 }
 
 void grab_chord(chord_t *chord)

types.c

@@ -4,6 +4,7 @@
 #include <unistd.h>
 #include "types.h"
 #include "parse.h"
+#include "grab.h"
 
 hotkey_t *find_hotkey(xcb_keysym_t keysym, xcb_button_t button, uint16_t modfield, uint8_t event_type, bool *replay_event)
 {
@@ -32,6 +33,7 @@ hotkey_t *find_hotkey(xcb_keysym_t keysym, xcb_button_t button, uint16_t modfiel
             } else {
                 c->state = c->state->next;
                 num_active++;
+                grab_chord(c->state);
             }
         } else if (chained) {
             if (c->state->event_type == event_type)
@@ -169,6 +171,8 @@ void abort_chain(void)
     chained = false;
     if (timeout > 0)
         alarm(0);
+    ungrab();
+    grab();
 }
 
 void destroy_chain(chain_t *chain)