From: Yoichi NAKAYAMA <yoichi.nakayama@gmail.com>

Given a state in which the cross-references between the worktree and
the repository (specifically worktree/id/gitdir in the main repository
and the .git file in the worktree) are recorded using absolute paths,
setting 'worktree.useRelativePaths=true' and running 'git worktree
repair' within the main worktree converts them to relative paths.

Conversely, given a state in which the cross-references are recorded
using relative paths, one would expect that setting
'worktree.useRelativePaths=false' and running 'git worktree repair'
would convert them to absolute paths. However, they remain as relative
paths.

This is because we incorrectly use read_gitfile_gently(), which always
returns an absolute path. To fix this, introduce read_gitfile_raw(),
which is almost identical to read_gitfile_gently(), but skips checking
the existence of the referenced repository and returns the path as-is
from the .git file.

Signed-off-by: Yoichi NAKAYAMA <yoichi.nakayama@gmail.com>

Submitted-As: https://lore.kernel.org/git/pull.2205.v3.git.1787344586470.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.2205.git.1786799480344.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.2205.v2.git.1787240760069.gitgitgadget@gmail.com