[PATCH v2 0/9] Advanced --oneline layout

The series is now feature complete from my usage pov. The syntax may change though. No tests yet until we agree on the syntax and semantics. Summary:

 - %C(auto) turns on coloring for the next placeholder
 - %C(auto,N) the same on the next N placeholders
 - %<(W) makes sure the next placeholder takes W columns, left aligned
 - %>(W) like %< but right aligned
 - %><(W) like %< but centered
 - %>|(W), %<|(W), %><|(W) are similar, except that W is calculated
   to reach the Nth column on screen. (We might want %>|< instead of
   %><|)
 - %>>(W) like %>(W) but it will try to steal trailing spaces if the
   placeholder uses more than "W" columns. Very useful in "%<%>"
   combination where the last placeholder may leave a lot of spaces
   unused
 - All the above may take trunc, ltrunc, mtrunc optios in the bracket
   to truncate the result string if exceeds the given width. It
   truncates on the right, left and middle respectively.
 - No support for $COLUMNS. If you want to fit your screen, bash's
   $(()) syntax is your friend to calculate columns.
 - We might want to support %<direction>(W,N), e.g. %<(40,3), where
   the next N placeholders are grouped and aligned together as a
   single placeholder.

Show off time:

6ab07c4 pretty: support %>> that steal trailing spaces (HEAD, lanh/prettier) Nguyễn..gọc Duy ee1c10e pretty: support truncating in %>, %< and %>< Nguyễn..gọc Duy 77aefae pretty: support padding placeholders, %< %> and %>< Nguyễn..gọc Duy 8f81f6b pretty: two phase conversion for non utf-8 commits Nguyễn..gọc Duy c3f1243 utf8.c: add utf8_strnwidth() with the ability to skip ansi sequences Nguyễn..gọc Duy 1a4e9bb utf8.c: move display_mode_esc_sequence_len() for use by other functions Nguyễn..gọc Duy 99aa0c2 pretty: support %C(auto[,N]) to turn on coloring on next placeholder(s) Nguyễn..gọc Duy 1feaab6 pretty: split parsing %C into a separate function Nguyễn..gọc Duy b2676ac pretty: share code between format_decoration and show_decorations Nguyễn..gọc Duy 6bdccbe graph: avoid infinite loop in graph_show_commit() Nguyễn..gọc Duy 16eed7c Merge branch 'mh/fetch-filter-refs' (origin/master) Junio C Hamano

Produced with "%C(auto,99)%h %<|(80,trunc)%s%>>|(80)%d%>(15,mtrunc)% an"

Nguyễn Thái Ngọc Duy (9):
  pretty: share code between format_decoration and show_decorations
  pretty: split parsing %C into a separate function
  pretty: support %C(auto[,N]) to turn on coloring on next placeholder(s)
  utf8.c: move display_mode_esc_sequence_len() for use by other functions
  utf8.c: add utf8_strnwidth() with the ability to skip ansi sequences
  pretty: two phase conversion for non utf-8 commits
  pretty: support padding placeholders, %< %> and %><
  pretty: support truncating in %>, %< and %><
  pretty: support %>> that steal trailing spaces

 Documentation/pretty-formats.txt |   7 +
 log-tree.c                       |  60 ++++---
 log-tree.h                       |   3 +
 pretty.c                         | 327 ++++++++++++++++++++++++++++++++-------
 t/t4207-log-decoration-colors.sh |   8 +-
 t/t6006-rev-list-format.sh       |  16 +-
 t/t6006/commit-msg.iso8859-1     |   5 +
 utf8.c                           |  94 ++++++++---
 utf8.h                           |   4 +
 9 files changed, 412 insertions(+), 112 deletions(-)
 create mode 100644 t/t6006/commit-msg.iso8859-1