Emit a whole line in one go

diff --git a/diff.h b/diff.h
index 9ace08cbae0651d53dd558f80a3d88777b5521c3..b4eefa759d87e22a877d668cd1f88e73cb4789d7 100644 (file)
--- a/diff.h
+++ b/diff.h
@@ -9,6 +9,7 @@
 struct rev_info;
 struct diff_options;
 struct diff_queue_struct;
+struct strbuf;
 
 typedef void (*change_fn_t)(struct diff_options *options,
                 unsigned old_mode, unsigned new_mode,
@@ -25,6 +26,8 @@ typedef void (*add_remove_fn_t)(struct diff_options *options,
 typedef void (*diff_format_fn_t)(struct diff_queue_struct *q,
                struct diff_options *options, void *data);
 
+typedef struct strbuf *(*diff_prefix_fn_t)(struct diff_options *opt, void *data);
+
 #define DIFF_FORMAT_RAW                0x0001
 #define DIFF_FORMAT_DIFFSTAT   0x0002
 #define DIFF_FORMAT_NUMSTAT    0x0004
@@ -130,6 +133,8 @@ struct diff_options {
        add_remove_fn_t add_remove;
        diff_format_fn_t format_callback;
        void *format_callback_data;
+       diff_prefix_fn_t output_prefix;
+       void *output_prefix_data;
 };
 
 enum color_diff {