lines you wish to select. Individual line numbers should be separated by
a space or comma, to specify a range of lines use a dash between
them. If the upper bound of a range of lines is omitted it defaults to
-the last line.
+the last line. To invert the selection prefix it with "-" so "-3-5,8"
+will select everything except lines 3, 4, 5 and 8.
+
After deciding the fate for all hunks, if there is any hunk
that was chosen, the index is updated with the selected hunks.