[PATCH v4 0/3] "diff --color-moved" with yet another heuristic

These patches are on sb/diff-color-move.

Patches 1 and 2 are unchanged, except for some line wrapping in a test in patch 2.

This has been updated to use the same alphanumeric heuristic as blame (20 alnum characters). I tried it out and I thought the results were reasonable in a patch set that I'm working on (the pack-related function refactoring one).

As for refactoring blame.c and this file, I'm not sure where best to put the new function, so I've added a NEEDSWORK for now.

As for detecting block boundaries in adjust_last_block(), I've left it as-is for now. I think it's clearer if the parent function provides that information, since it already tracks that. In addition, we avoid corner cases such as what happens if the block is at the start of the diff output (we must ensure that we don't read off the beginning edge, for example).

Jonathan Tan (3):
  diff: avoid redundantly clearing a flag
  diff: respect MIN_BLOCK_LENGTH for last block
  diff: define block by number of alphanumeric chars

 Documentation/diff-options.txt |   8 +-
 diff.c                         |  47 ++++++--
 diff.h                         |   2 +-
 t/t4015-diff-whitespace.sh     | 261 ++++++++++++++++++++++++++++++-----------
 4 files changed, 236 insertions(+), 82 deletions(-)