+char *text_fallback(drawing *dr, const char *const *strings, int nstrings)
+{
+ int i;
+
+ /*
+ * If the drawing implementation provides one of these, use it.
+ */
+ if (dr && dr->api->text_fallback)
+ return dr->api->text_fallback(dr->handle, strings, nstrings);
+
+ /*
+ * Otherwise, do the simple thing and just pick the first string
+ * that fits in plain ASCII. It will then need no translation
+ * out of UTF-8.
+ */
+ for (i = 0; i < nstrings; i++) {
+ const char *p;
+
+ for (p = strings[i]; *p; p++)
+ if (*p & 0x80)
+ break;
+ if (!*p)
+ return dupstr(strings[i]);
+ }
+
+ /*
+ * The caller was responsible for making sure _some_ string in
+ * the list was in plain ASCII.
+ */
+ assert(!"Should never get here");
+ return NULL; /* placate optimiser */
+}
+