-XBT_PUBLIC(int) asprintf (char **ptr, const char *fmt, /*args*/ ...) _XBT_GNUC_PRINTF(2,3);
-XBT_PUBLIC(int) vasprintf (char **ptr, const char *fmt, va_list ap);
-XBT_PUBLIC(char*) bprintf (const char*fmt, ...) _XBT_GNUC_PRINTF(1,2);
-
-#if defined(_WIN32) || !defined(__GNUC__)
-XBT_PUBLIC(long) getline(char **lineptr, size_t *n, FILE *stream);
+/** @addtogroup XBT_str
+ * @brief String manipulation functions
+ *
+ * This module defines several string related functions. We redefine some quite classical
+ * functions on the platforms were they are not nativaly defined (such as getline() or
+ * asprintf()), while some other are a bit more exotic.
+ * @{
+ */
+/* snprintf related functions */
+/** @brief print to allocated string (reimplemented when not provided by the system)
+ *
+ * The functions asprintf() and vasprintf() are analogues of
+ * sprintf() and vsprintf(), except that they allocate a string large
+ * enough to hold the output including the terminating null byte, and
+ * return a pointer to it via the first parameter. This pointer
+ * should be passed to free(3) to release the allocated storage when
+ * it is no longer needed.
+ */
+XBT_PUBLIC(int) asprintf(char **ptr, const char *fmt, /*args */
+ ...) _XBT_GNUC_PRINTF(2, 3);
+/** @brief print to allocated string (reimplemented when not provided by the system)
+ *
+ * See asprintf()
+ */
+XBT_PUBLIC(int) vasprintf(char **ptr, const char *fmt, va_list ap);
+/** @brief print to allocated string
+ *
+ * Works just like asprintf(), but returns a pointer to the newly created string
+ */
+XBT_PUBLIC(char *) bprintf(const char *fmt, ...) _XBT_GNUC_PRINTF(1, 2);
+
+/* the gettext function. It gets redefined here only if not yet available */
+#if !defined(__USE_GNU) || defined(DOXYGEN)
+XBT_PUBLIC(long) getline(char **lineptr, size_t * n, FILE * stream);