+LIBPBD_API std::string short_version (std::string, std::string::size_type target_length);
+
+LIBPBD_API int atoi (const std::string&);
+LIBPBD_API int32_t atol (const std::string&);
+LIBPBD_API int64_t atoll (const std::string&);
+LIBPBD_API double atof (const std::string&);
+LIBPBD_API std::string url_decode (std::string const &);
+
+LIBPBD_API std::string capitalize (const std::string&);
+
+// std::string length2string (const int32_t frames, const float sample_rate);
+LIBPBD_API std::string length2string (const int64_t frames, const double sample_rate);
+
+LIBPBD_API std::vector<std::string> internationalize (const char *, const char **);
+LIBPBD_API bool strings_equal_ignore_case (const std::string& a, const std::string& b);