[PATCH 0/7] improve range-diffs coloring and [RFC] move detection

This builds on top of sb/range-diff-colors, which builds on js/range-diff.
As Thomas seemed happy with the range-diff and said
"and fwiw I didn't think there's anything major that needs to be addressed."
I found it reasonable to build more on top of those series.
[1] https://public-inbox.org/git/20180729215053.GE9955@hank.intra.tgummerer.com/
It can also be found via
  git fetch https://github.com/stefanbeller/git moved-in-patches

This series provides for 2 goals, which share a common base refactoring:

The refactoring part is to allow the diff machinery to prefix old/new/context lines with prefixes as chosen by the user.

The first feature is to slightly adapt coloring of range-diff to have the file markers

  --- a/diff.c
  +++ b/diff.c
  
be shown as context color. This is done by using custom prefixes for
old/new/context lines in the inner diffs and indenting all other lines
instead by a white space indicating it to be context.

The second feature is more RFC-ish in nature and just exposes the mechanism to the user in a meaning-ful way. All of the diff family (including format-patch) as well as apply/am can use */~ instead of +/- for moved lines of code.

Thanks, Stefan

Stefan Beller (7):
  diff.c: emit_line_0 to take string instead of first sign
  diff.c: add --output-indicator-{new, old, context}
  range-diff: make use of different output indicators
  range-diff: indent special lines as context
  diff.c: rename color_moved to markup_moved
  diff.c: factor determine_line_color out of
    emit_diff_symbol_from_struct
  diff/am: enhance diff format to use */~ for moved lines

 apply.c               |  12 +++
 diff.c                | 180 ++++++++++++++++++++++++++----------------
 diff.h                |  10 ++-
 range-diff.c          |  17 +++-
 t/t3206-range-diff.sh |  12 +--
 5 files changed, 153 insertions(+), 78 deletions(-)