const char *pickaxe, int pickaxe_opts,
const char *orderfile, const char *filter);
+#define COMMON_DIFF_OPTIONS_HELP \
+"\ncommon diff options:\n" \
+" -r diff recursively (only meaningful in diff-tree)\n" \
+" -z output diff-raw with lines terminated with NUL.\n" \
+" -p output patch format.\n" \
+" -u synonym for -p.\n" \
+" --name-only show only names of changed files.\n" \
+" --name-only-z\n" \
+" same as --name-only but terminate lines with NUL.\n" \
+" -R swap input file pairs.\n" \
+" -B detect complete rewrites.\n" \
+" -M detect renames.\n" \
+" -C detect copies.\n" \
+" --find-copies-harder\n" \
+" try unchanged files as candidate for copy detection.\n" \
+" -O<file> reorder diffs according to the <file>.\n" \
+" -S<string> find filepair whose only one side contains the string.\n" \
+" --pickaxe-all\n" \
+" show all files diff when -S is used and hit is found.\n"
+
extern int diff_queue_is_empty(void);
-#define DIFF_FORMAT_HUMAN 0
-#define DIFF_FORMAT_MACHINE 1
+#define DIFF_FORMAT_RAW 1
#define DIFF_FORMAT_PATCH 2
#define DIFF_FORMAT_NO_OUTPUT 3
-
-extern void diff_flush(int output_style);
+#define DIFF_FORMAT_NAME 4
+
+extern void diff_flush(int output_style, int line_terminator);
+
+/* diff-raw status letters */
+#define DIFF_STATUS_ADDED 'A'
+#define DIFF_STATUS_COPIED 'C'
+#define DIFF_STATUS_DELETED 'D'
+#define DIFF_STATUS_MODIFIED 'M'
+#define DIFF_STATUS_RENAMED 'R'
+#define DIFF_STATUS_TYPE_CHANGED 'T'
+#define DIFF_STATUS_UNKNOWN 'X'
+#define DIFF_STATUS_UNMERGED 'U'
+
+/* these are not diff-raw status letters proper, but used by
+ * diffcore-filter insn to specify additional restrictions.
+ */
+#define DIFF_STATUS_FILTER_AON 'A'
+#define DIFF_STATUS_FILTER_BROKEN 'B'
#endif /* DIFF_H */