[PATCH 1/2] git-check-attr(1): add output and example sections

[Jonas Fonseca <fonseca@diku.dk>]

Plumbing tools should document what output can be expected.

Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
---
 Documentation/git-check-attr.txt |   50 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 50 insertions(+), 0 deletions(-)

 Junio C Hamano <gitster@pobox.com> wrote Tue, Oct 14, 2008:
 > Should this really have to depend on next?

 This is just topgit listing the patch dependencies.

 > Could you split this into two patches, one for 'maint' to describe the
 > output format, and another for 'next' (or 'dp/checkattr') to update the
 > SYNOPSIS part?

 Done. The example has been updated to also show '!' in action.

diff --git a/Documentation/git-check-attr.txt b/Documentation/git-check-attr.txt
index 2b821f2..8460a87 100644
--- a/Documentation/git-check-attr.txt
+++ b/Documentation/git-check-attr.txt
@@ -22,6 +22,56 @@ OPTIONS
 	arguments as path names. If not supplied, only the first argument will
 	be treated as an attribute.
 
+OUTPUT
+------
+
+The output is of the form:
+<path> COLON SP <attribute> COLON SP <info> LF
+
+Where <path> is the path of a file being queried, <attribute> is an attribute
+being queried and <info> can be either:
+
+'unspecified';; when the attribute is not defined for the path.
+'unset';;	when the attribute is defined to false.
+'set';;		when the attribute is defined to true.
+<value>;;	when a value has been assigned to the attribute.
+
+EXAMPLES
+--------
+
+In the examples, the following '.gitattributes' file is used:
+---------------
+*.java diff=java -crlf myAttr
+NoMyAttr.java !myAttr
+README caveat=unspecified
+---------------
+
+* Listing a single attribute:
+---------------
+$ git check-attr diff org/example/MyClass.java
+org/example/MyClass.java: diff: java
+---------------
+
+* Listing multiple attributes for a file:
+---------------
+$ git check-attr crlf diff myAttr -- org/example/MyClass.java
+org/example/MyClass.java: crlf: unset
+org/example/MyClass.java: diff: java
+org/example/MyClass.java: myAttr: set
+---------------
+
+* Listing attribute for multiple files:
+---------------
+$ git check-attr myAttr -- org/example/MyClass.java org/example/NoMyAttr.java
+org/example/MyClass.java: myAttr: set
+org/example/NoMyAttr.java: myAttr: unspecified
+---------------
+
+* Not all values are equally unambiguous:
+---------------
+$ git check-attr caveat README
+README: caveat: unspecified
+---------------
 
 SEE ALSO
 --------
-- 
tg: (6c16792..) jf/man-git-check-attr-output (depends on: maint)

-- 
Jonas Fonseca