Let git diff show "intent-to-add" files as new files

[dscho]

There is this feature where you can call git add -N file to tell Git that you intend to stage the file later, but do not want to stage any content yet. The intuitive thing for git diff would be to report those files with the new file header.

Not only that, by not showing that header, git add -p does not show the expected prompt. Example:

  $ git init
  $ >empty
  $ echo content >not-empty
  $ git add -N .
  $ git add -p
  diff --git a/not-empty b/not-empty
  index e69de29..d95f3ad 100644
  --- a/not-empty
  +++ b/not-empty
  @@ -0,0 +1 @@
  +content
  (1/1) Stage this hunk [y,n,q,a,d,e,?]? n

For full details, see https://lore.kernel.org/git/20200527230357.GB546534@coredump.intra.peff.net/ (and https://lore.kernel.org/git/nycvar.QRO.7.76.6.2005272150220.56@tvgsbejvaqbjf.bet/, which marked this as #leftoverbits).

[phillipwood]

Is this still relevant? Didn't you fix it diff in 85953a3 ("diff-files --raw: show correct post-image of intent-to-add files", 2020-07-01) and I've just landed 75a009d ("add -p: fix editing of intent-to-add paths", 2020-09-09)

[dscho]

I totally did! Thank you for your diligence.