fix list sorting

common/list.c

@@ -50,8 +50,14 @@ void list_cat(list_t *list, list_t *source) {
 	}
 }
 
+// pass the pointer of the object we care about to the comparison function
+static int list_cmp(const void *l, const void *r, void *_cmp) {
+	int (*cmp)(const void *, const void *) = _cmp;
+	return cmp(*(void**)l, *(void**)r);
+}
+
 void list_sort(list_t *list, int compare(const void *left, const void *right)) {
-	qsort(list->items, list->length, sizeof(void *), compare);
+	qsort_r(list->items, list->length, sizeof(void *), list_cmp, compare);
 }
 
 int list_seq_find(list_t *list, int compare(const void *item, const void *data), const void *data) {

sway/commands.c

@@ -1128,9 +1128,9 @@ static struct cmd_results *cmd_scratchpad(int argc, char **argv) {
 
 // sort in order of longest->shortest
 static int compare_set(const void *_l, const void *_r) {
-	struct sway_variable * const *l = _l;
-	struct sway_variable * const *r = _r;
-	return strlen((*r)->name) - strlen((*l)->name);
+	struct sway_variable const *l = _l;
+	struct sway_variable const *r = _r;
+	return strlen(r->name) - strlen(l->name);
 }
 
 static struct cmd_results *cmd_set(int argc, char **argv) {

sway/config.c

@@ -387,18 +387,20 @@ int workspace_output_cmp_workspace(const void *a, const void *b) {
 int sway_binding_cmp_keys(const void *a, const void *b) {
 	const struct sway_binding *binda = a, *bindb = b;
 
-	if (binda->modifiers > bindb->modifiers) {
-		return 1;
-	} else if (binda->modifiers < bindb->modifiers) {
-		return -1;
-	}
+	// Count keys pressed for this binding. important so we check long before
+	// short ones.  for example mod+a+b  before  mod+a
+	unsigned int moda = 0, modb = 0, i;
 
-	if (binda->keys->length > bindb->keys->length) {
-		return 1;
-	} else if (binda->keys->length < bindb->keys->length) {
-		return -1;
+	// Count how any modifiers are pressed
+	for (i = 0; i < 8 * sizeof(binda->modifiers); ++i) {
+		moda += (binda->modifiers & 1 << i) != 0;
+		modb += (bindb->modifiers & 1 << i) != 0;
+	}
+	if (bindb->keys->length + modb != binda->keys->length + moda) {
+		return (bindb->keys->length + modb) - (binda->keys->length + moda);
 	}
 
+	// Otherwise compare keys
 	for (int i = 0; i < binda->keys->length; i++) {
 		xkb_keysym_t *ka = binda->keys->items[i],
 				*kb = bindb->keys->items[i];