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git/Documentation/git-check-attr.txt
Junio C Hamano 0db320d023 Merge branch 'jc/check-x-z'
"git check-ignore -z" applied the NUL termination to both its input
(with --stdin) and its output, but "git check-attr -z" ignored the
option on the output side.

This is potentially a backward incompatible fix.  Let's see if
anybody screams before deciding if we want to do anything to help
existing users (there may be none).

* jc/check-x-z:
  check-attr -z: a single -z should apply to both input and output
  check-ignore -z: a single -z should apply to both input and output
  check-attr: the name of the character is NUL, not NULL
  check-ignore: the name of the character is NUL, not NULL
2013-09-04 12:23:25 -07:00

119 lines
3.1 KiB
Text

git-check-attr(1)
=================
NAME
----
git-check-attr - Display gitattributes information
SYNOPSIS
--------
[verse]
'git check-attr' [-a | --all | attr...] [--] pathname...
'git check-attr' --stdin [-z] [-a | --all | attr...] < <list-of-paths>
DESCRIPTION
-----------
For every pathname, this command will list if each attribute is 'unspecified',
'set', or 'unset' as a gitattribute on that pathname.
OPTIONS
-------
-a, --all::
List all attributes that are associated with the specified
paths. If this option is used, then 'unspecified' attributes
will not be included in the output.
--cached::
Consider `.gitattributes` in the index only, ignoring the working tree.
--stdin::
Read file names from stdin instead of from the command-line.
-z::
The output format is modified to be machine-parseable.
If `--stdin` is also given, input paths are separated
with a NUL character instead of a linefeed character.
\--::
Interpret all preceding arguments as attributes and all following
arguments as path names.
If none of `--stdin`, `--all`, or `--` is used, the first argument
will be treated as an attribute and the rest of the arguments as
pathnames.
OUTPUT
------
The output is of the form:
<path> COLON SP <attribute> COLON SP <info> LF
unless `-z` is in effect, in which case NUL is used as delimiter:
<path> NUL <attribute> NUL <info> NUL
<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 as false.
'set';; when the attribute is defined as true.
<value>;; when a value has been assigned to the attribute.
Buffering happens as documented under the `GIT_FLUSH` option in
linkgit:git[1]. The caller is responsible for avoiding deadlocks
caused by overfilling an input buffer or reading from an empty output
buffer.
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 all attributes for a file:
---------------
$ git check-attr --all -- org/example/MyClass.java
org/example/MyClass.java: diff: java
org/example/MyClass.java: myAttr: set
---------------
* Listing an 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
--------
linkgit:gitattributes[5].
GIT
---
Part of the linkgit:git[1] suite