[RFC PATCH 0/7] Moved code detection: ignore space on uniform indentation

This is a re-attempt of [1], which allows the moved code detection to ignore blanks in various modes.

patches 1-5 are refactoring, patch 6 adds all existing white space options of regular diff to the move detection. (I am unsure about this patch, as I presume we want to keep the option space at a minimum if possible).

The fun is in the last patch, which allows white space sensitive languages to trust the move detection, too. Each block that is marked as moved will have the same delta in {in-, de-}dentation. I would think this mode might be a reasonable default eventually.

Thanks, Stefan

[1] https://public-inbox.org/git/20171025224620.27657-1-sbeller@google.com/

Stefan Beller (7):
  xdiff/xdiff.h: remove unused flags
  xdiff/xdiffi.c: remove unneeded function declarations
  diff.c: do not pass diff options as keydata to hashmap
  diff.c: adjust hash function signature to match hashmap expectation
  diff.c: refactor internal representation for coloring moved code
  diff.c: decouple white space treatment for move detection from generic
    option
  diff.c: add --color-moved-ignore-space-delta option

 Documentation/diff-options.txt |  13 ++
 diff.c                         | 155 ++++++++++++---
 diff.h                         |  18 +-
 t/t4015-diff-whitespace.sh     | 341 ++++++++++++++++++++++++++++++++-
 xdiff/xdiff.h                  |   8 -
 xdiff/xdiffi.c                 |  17 --
 6 files changed, 483 insertions(+), 69 deletions(-)