doc: clarify ignore rules for git ls-files
Explain that `git ls-files --ignored` requires at least one
of the `--exclude*` options to do its job.
Signed-off-by: Andreas Heiduk <asheiduk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/git-ls-files.txt b/Documentation/git-ls-files.txt
index 3ac3e3a..f3474b2 100644
--- a/Documentation/git-ls-files.txt
+++ b/Documentation/git-ls-files.txt
@@ -53,7 +53,8 @@
Show only ignored files in the output. When showing files in the
index, print only those matched by an exclude pattern. When
showing "other" files, show only those matched by an exclude
- pattern.
+ pattern. Standard ignore rules are not automatically activated,
+ therefore at least one of the `--exclude*` options is required.
-s::
--stage::
