[PATCH v2] Document ls-files -t as semi-obsolete.

[Matthieu Moy <Matthieu.Moy@imag.fr>]

The behavior of "git ls-files -t" is very misleading (see
http://thread.gmane.org/gmane.comp.version-control.git/126516 and
http://thread.gmane.org/gmane.comp.version-control.git/144394/focus=144397
for examples of mislead users) and badly documented, hence we point the
users to superior alternatives.

The feature is marked as "semi-obsolete" but not "scheduled for removal"
since it's a plumbing command, scripts might use it, and Git testsuite
already uses it to test the state of the index.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
---
Resurecting a very old patch:

http://thread.gmane.org/gmane.comp.version-control.git/144874

The earlier concerns were:

1) There are valid uses for "git ls-files -t" and
2) If documentation is bad, then it should be improved.

This version should adress 1) by mitigating the wording (deprecated ->
semi-deprecated, "almost always"). To answer 2), I don't think
spending energy documenting a feature that almost nobody uses is worth
it. At least, I'm not going to do it, and since nothing happened for
months, I guess no one else will.

 Documentation/git-ls-files.txt |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/Documentation/git-ls-files.txt b/Documentation/git-ls-files.txt
index 3521637..2cc3243 100644
--- a/Documentation/git-ls-files.txt
+++ b/Documentation/git-ls-files.txt
@@ -106,6 +106,12 @@ OPTIONS
 	with `-s` or `-u` options does not make any sense.
 
 -t::
+	This feature is semi-deprecated. For scripting purpose,
+	linkgit:git-status[1] `--porcelain` is almost always a
+	superior alternative, and users should look at
+	linkgit:git-status[1] `--short` or linkgit:git-diff[1]
+	`--name-status` for more user-friendly alternatives.
+
 	Identify the file status with the following tags (followed by
 	a space) at the start of each line:
 	H::	cached
-- 
1.7.2.19.g9a302.dirty