[PATCH 0/5] Use string_lists when processing notes

This simplifies the code. Also, sort lines all at once (O(N lg N)) rather than insertion sorting as lines are processed (O(N^2)) and fix the handling of empty values in GIT_NOTES_DISPLAY_REF and GIT_NOTES_REWRITE_REF.

Michael Haggerty (5):
  string_list: add a function string_list_remove_empty_items()
  Initialize sort_uniq_list using named constant
  combine_notes_cat_sort_uniq(): sort and dedup lines all at once
  notes: fix handling of colon-separated values
  string_list_add_refs_from_colon_sep(): use string_list_split()

 Documentation/technical/api-string-list.txt |  9 ++++-
 notes.c                                     | 61 ++++++++++++-----------------
 string-list.c                               |  9 +++++
 string-list.h                               |  7 ++++
 4 files changed, 49 insertions(+), 37 deletions(-)