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doc: core.ignoreStat update, and clarify the --assume-unchanged effect

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The assume-unchanged bit, and consequently core.ignoreStat, can be
misunderstood. Be assertive about the expectation that file changes should
notified to Git.

Overhaul the general wording thus:
    1. direct description of what is ignored given first.
    2. example instruction of the user manual action required.
    3. use sideways indirection for assume-unchanged and update-index
       references.
    4. add a 'normally' to give leeway for the change detection.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Philip Oakley 2015-01-05 22:22:53 +00:00 committed by Junio C Hamano
parent 1be976eeb4
commit 92be938e96
1 changed files with 13 additions and 9 deletions
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22
Documentation/config.txt
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@ -364,15 +364,19 @@ This is useful for excluding servers inside a firewall from
proxy use, while defaulting to a common proxy for external domains.
core.ignoreStat::
If true, commands which modify both the working tree and the index
will mark the updated paths with the "assume unchanged" bit in the
index. These marked files are then expected to stay unchanged in the
working tree. If you change them you should mark their update manually.
Git will normally not detect the file changes by lstat() calls.
This is useful on systems where those calls are very slow, such as
cifs/Microsoft Windows.
See linkgit:git-update-index[1].
False by default.
If true, Git will avoid using lstat() calls to detect if files have
changed by setting the "assume-unchanged" bit for those tracked files
which it has updated identically in both the index and working tree.
+
When files are modified outside of Git, the user will need to stage
the modified files explicitly (e.g. see 'Examples' section in
linkgit:git-update-index[1]).
Git will not normally detect changes to those files.
+
This is useful on systems where lstat() calls are very slow, such as
CIFS/Microsoft Windows.
+
False by default.
core.preferSymlinkRefs::
Instead of the default "symref" format for HEAD