xim: add callback preedit and UTF-8 negotiation

tests/xim_test.c

@@ -48,6 +48,24 @@ checkutf8run(void)
 	free(ct);
 }
 
+static void
+checkcorpus(void)
+{
+	static const char *text[] = {
+		"한글",
+		"かなカナ",
+		"漢字",
+		"𠀋",
+		"😀",
+		"❤️",
+		"👩‍💻",
+	};
+	size_t i;
+
+	for(i = 0; i < sizeof text / sizeof text[0]; i++)
+		checktext(text[i]);
+}
+
 int
 main(void)
 {
@@ -73,9 +91,7 @@ main(void)
 	assert(keymaplookup(punctuation, 2, LockMask|ShiftMask) == XKB_KEY_exclam);
 	assert(keymaplookup(missing, 4, Group1) == XKB_KEY_a);
 	assert(keymaplookup(NULL, 0, 0) == XKB_KEY_NoSymbol);
-	checktext("한글");
-	checktext("😀");
-	checktext("❤️");
+	checkcorpus();
 	checktext("A😀한");
 	checkutf8run();
 	return 0;