path: root/Documentation/git-update-index.txt
diff options
Diffstat (limited to 'Documentation/git-update-index.txt')
1 files changed, 27 insertions, 1 deletions
diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index 2fec666..3897a59 100644
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -161,7 +161,7 @@ you will need to handle the situation manually.
Version 4 performs a simple pathname compression that reduces index
size by 30%-50% on large repositories, which results in faster load
-time. Version 4 is relatively young (first released in in 1.8.0 in
+time. Version 4 is relatively young (first released in 1.8.0 in
October 2012). Other Git implementations such as JGit and libgit2
may not support it yet.
@@ -464,6 +464,32 @@ command reads the index; while when `--[no-|force-]untracked-cache`
are used, the untracked cache is immediately added to or removed from
the index.
+Before 2.17, the untracked cache had a bug where replacing a directory
+with a symlink to another directory could cause it to incorrectly show
+files tracked by git as untracked. See the "status: add a failing test
+showing a core.untrackedCache bug" commit to git.git. A workaround for
+that is (and this might work for other undiscovered bugs in the
+$ git -c core.untrackedCache=false status
+This bug has also been shown to affect non-symlink cases of replacing
+a directory with a file when it comes to the internal structures of
+the untracked cache, but no case has been reported where this resulted in
+wrong "git status" output.
+There are also cases where existing indexes written by git versions
+before 2.17 will reference directories that don't exist anymore,
+potentially causing many "could not open directory" warnings to be
+printed on "git status". These are new warnings for existing issues
+that were previously silently discarded.
+As with the bug described above the solution is to one-off do a "git
+status" run with `core.untrackedCache=false` to flush out the leftover
+bad data.
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