protected DiffEngine::_compareseq($xoff, $xlim, $yoff, $ylim)
Find LCS of two sequences.
The results are recorded in the vectors $this->{x,y}changed[], by storing a 1 in the element for each line that is an insertion or deletion (ie. is not in the LCS).
The subsequence of file 0 is [XOFF, XLIM) and likewise for file 1.
Note that XLIM, YLIM are exclusive bounds. All line numbers are origin-0 and discarded lines are not counted.
File
core/lib/Drupal/Component/Diff/Engine/DiffEngine.php, line 2