[PATCH 0/5] Progress display fixes

This patch series fixes two progress display issues:

  - When showing throughput, and the both the total and the throughput
    change units in the same update, than the previously shown
    progress bar is not cleaned up properly:

      Receiving objects:  25% (2901/11603), 772.01 KiB | 733.00 KiB/s
      Receiving objects:  27% (3133/11603), 1.43 MiB | 1.16 MiB/s   s

  - When the progress bar is longer than the width of the terminal,
    then we end up with a bunch of truncated progress bar lines
    scrolling past:

      $ LANG=es_ES.UTF-8 git commit-graph write
      Encontrando commits para commit graph entre los objetos empaquetados:   2% (1599
      Encontrando commits para commit graph entre los objetos empaquetados:   3% (1975
      Encontrando commits para commit graph entre los objetos empaquetados:   4% (2633
      Encontrando commits para commit graph entre los objetos empaquetados:   5% (3292
      [...]

Patches 4 and 5 fix these two issues, while the first three are minor preparatory cleanups and refactorings.

SZEDER Gábor (5):
  progress: make display_progress() return void
  progress: return early when in the background
  progress: assemble percentage and counters in a strbuf before printing
  progress: clear previous progress update dynamically
  progress: break too long progress bar lines

 progress.c | 78 +++++++++++++++++++++++++++++++++++++++---------------
 progress.h |  2 +-
 2 files changed, 57 insertions(+), 23 deletions(-)