public asciify

lib11sht.h

@@ -92,4 +92,18 @@ int fequal(float a, float b, float delta);
  * be NUL-terminated. */
 void trim(char *s);
 
+/* Transliterate accented Latin chars to plain ASCII. Walks src as UTF-8,
+ * mapping known accented chars (a-acute, c-cedilla, n-tilde, NBSP, ...)
+ * to their ASCII equivalents and copying ASCII bytes verbatim. Output is
+ * always pure ASCII and NUL-terminated. Bytes that don't match the
+ * transliteration table are skipped.
+ *
+ * Parameters:
+ *   src        input UTF-8 string (NUL-terminated)
+ *   dest       output buffer (filled with NUL-terminated ASCII)
+ *   dest_size  size of dest in bytes (writes capped at dest_size-1 + final NUL)
+ *
+ * Safe for NULL / zero-size args (no-op). */
+void asciify(const char *src, char *dest, size_t dest_size);
+
 #endif /* LIB11SHT_H */