+/* Client supplied function used to decode formats. */
+#define output_format_decoder(BUFFER) (BUFFER)->format_decoder
+
+/* Prefixing rule used in formatting a diagnostic message. */
+#define output_prefixing_rule(BUFFER) (BUFFER)->state.prefixing_rule
+
+/* Maximum characters per line in automatic line wrapping mode.
+ Zero means don't wrap lines. */
+#define output_line_cutoff(BUFFER) (BUFFER)->state.ideal_maximum_length
+
+/* True if BUFFER is in line-wrapping mode. */
+#define output_is_line_wrapping(BUFFER) (output_line_cutoff (BUFFER) > 0)
+
+#define output_formatted_scalar(BUFFER, FORMAT, SCALAR) \
+ do \
+ { \
+ sprintf ((BUFFER)->digit_buffer, FORMAT, SCALAR); \
+ output_add_string (BUFFER, (BUFFER)->digit_buffer); \
+ } \
+ while (0)
+
+/* Forward declarations. */
+typedef struct diagnostic_context diagnostic_context;
+typedef void (*diagnostic_starter_fn) PARAMS ((diagnostic_context *,
+ diagnostic_info *));
+typedef diagnostic_starter_fn diagnostic_finalizer_fn;
+