[PATCH 0/2] worktree repair: avoid breaking unrelated .git file and gitdir

'git worktree repair' does not sufficiently validate the cross-references between a linked working tree and its administrative data before repairing them. This can cause the repair to modify the wrong .git file or gitdir in certain situations.

This series first refactors the code to read the .git file once and extract the worktree ID, then uses that information to validate the repair target before modifying the cross-references.

 * [1/2] Refactor the code without changing functionality before making the
   fix
 * [2/2] Validate the worktree ID and inferred gitdir path before repairing

Yoichi NAKAYAMA (2):
  worktree repair: refactor and reduce .git file reads
  worktree repair: avoid breaking unrelated .git file and gitdir

 t/t2406-worktree-repair.sh |  33 +++++++++---
 worktree.c                 | 105 ++++++++++++++++++++-----------------
 2 files changed, 83 insertions(+), 55 deletions(-)

base-commit: 47ce80527c56f462cb97db4ca8125342204d3783
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-2225%2Fyoichi%2Fworktree-repair-keep-unrelated-gitfile-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-2225/yoichi/worktree-repair-keep-unrelated-gitfile-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/2225