" -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"
+" show all files diff when -S is used and hit is found.\n" \
+" -a --text treat all files as text.\n"
extern int diff_queue_is_empty(void);
extern void diff_flush(struct diff_options*);