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-rw-r--r--range-diff.h17
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+#ifndef RANGE_DIFF_H
+#define RANGE_DIFF_H
+
+#include "diff.h"
+
+#define RANGE_DIFF_CREATION_FACTOR_DEFAULT 60
+
+/*
+ * Compare series of commmits in RANGE1 and RANGE2, and emit to the
+ * standard output. NULL can be passed to DIFFOPT to use the built-in
+ * default.
+ */
+int show_range_diff(const char *range1, const char *range2,
+ int creation_factor, int dual_color,
+ struct diff_options *diffopt);
+
+#endif