action_direction_t 1994 src/diffviewer/ydiff.c action_direction_t merge_direction) action_direction_t 2031 src/diffviewer/ydiff.c action_direction_t merge_direction) action_direction_t 2078 src/diffviewer/ydiff.c action_direction_t merge_direction) action_direction_t 2122 src/diffviewer/ydiff.c do_merge_hunk (WDiff *dview, action_direction_t merge_direction)