[PATCH v5 0/3] difftool dir-diff symlink bug fix and cleanup patches

This is a resend of previously submitted patches.

Links to previous discussions: https://public-inbox.org/git/20210919203832.91207-1-davvid@gmail.com/ https://public-inbox.org/git/20210920220855.18637-1-davvid@gmail.com/ https://public-inbox.org/git/CAPig+cTBfP5_czsPiALcF3tODJmNfXvNkTjqVFRbHCS535d-ng@mail.gmail.com/

Patches 2/3 and 3/3 have been rebased against "next" to resolve the clash with ab/retire-option-argument.

Patch 1/3 is maint-worthy and can be applied there without conflicts. The commit message now uses the commit message ref format when referring to other commits. Its test was adjusted to do "cd xyz" instead of "cd ./xyz".

Patch 2/3 has the strbuf leak avoidance brought up in the v4 round.

Patch 3/3 is trivial and unchanged.

David Aguilar (3):
  difftool: fix symlink-file writing in dir-diff mode
  difftool: create a tmpdir path without repeated slashes
  difftool: add a missing space to the run_dir_diff() comments

 builtin/difftool.c  | 52 +++++++++++++++----------------
 t/t7800-difftool.sh | 75 +++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 99 insertions(+), 28 deletions(-)