1 file changed, 3 insertions, 22 deletions
diff --git a/source/ui-stats.h b/source/ui-stats.h
index 1cd0b9d..3479732 100644
--- a/source/ui-stats.h
+++ b/source/ui-stats.h
@@ -1,32 +1,13 @@
 /*
  * The statistics page, which counts commits per author over a window of
- * recent weeks, months, quarters or years. The windows are described here
- * rather than inside the page, because cgit.c resolves a repository's
- * max-stats setting against the same set.
+ * recent weeks, months, quarters or years, and the period lookups that cgit.c
+ * resolves a max-stats setting with.
  */
 
 #ifndef CGIT_UI_STATS_H
 #define CGIT_UI_STATS_H
 
-#include "cgit.h"
-
-struct cgit_period {
-	const char code;
-	const char *name;
-
-	// How many periods a page shows side by side.
-	int count;
-
-	// Move a tm back to the first day of the period it falls in.
-	void (*trunc)(struct tm *tm);
-
-	// Step a truncated tm n whole periods, back when n is negative.
-	void (*step)(struct tm *tm, int n);
-
-	// Label the period a tm falls in. The buffer is reused, so a caller
-	// that keeps a label copies it.
-	char *(*pretty)(struct tm *tm);
-};
+struct cgit_period;
 
 /*
  * Look a period up by its one letter code or by its full name, storing the