[PATCH 0/4] use the pager in 'add -p'

I'm resuming work on introducing a mechanism to use the PAGER to display hunks during interactive "git add -p" sessions, which will make it easier to review large hunks.

The thread where the previous discussion took place is: https://lore.kernel.org/git/1d0cb55c-5f32-419a-b593-d5f0969a51fd@gmail.com/

I'm bringing back the proposal to introduce 'P' as a mechanism to display the current hunks through the PAGER.

I think it's sensible to exclude from the scope of this series the option of a new command '|[cmd]' and other modifications to the original proposal that have raised questions that perhaps deserve their own discussion, outside the scope of this series. Questions like:

   - What to do with ANSI codes?
   - How to allow the definition of a default command?
   - How to facilitate the reuse of a command?
   - How to combine a default command with command reuse?
   - What to do if the command fails?

To mention a few...

I'm also leaving for a future series a possible configuration "interactive.pipeCommand", "interactive.pager" or similar.

I hope this approach makes sense and allows us to move forward, and that it doesn't represent a step back.

Thanks.

Rubén Justo (4):
  add-patch: test for 'p' command
  pager: do not close fd 2 unnecessarily
  pager: introduce wait_for_pager
  add-patch: render hunks through the pager

 add-patch.c                | 18 ++++++++++--
 pager.c                    | 45 ++++++++++++++++++++++++----
 pager.h                    |  1 +
 t/t3701-add-interactive.sh | 60 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 116 insertions(+), 8 deletions(-)