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1st chunk of `Documentation/git-check-ignore.adoc`
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git-check-ignore(1)
===================

NAME
----
git-check-ignore - Debug gitignore / exclude files


SYNOPSIS
--------
[verse]
'git check-ignore' [<options>] <pathname>...
'git check-ignore' [<options>] --stdin

DESCRIPTION
-----------

For each pathname given via the command-line or from a file via
`--stdin`, check whether the file is excluded by .gitignore (or other
input files to the exclude mechanism) and output the path if it is
excluded.

By default, tracked files are not shown at all since they are not
subject to exclude rules; but see `--no-index'.

OPTIONS
-------
-q, --quiet::
	Don't output anything, just set exit status.  This is only
	valid with a single pathname.

-v, --verbose::
	Instead of printing the paths that are excluded, for each path
	that matches an exclude pattern, print the exclude pattern
	together with the path.  (Matching an exclude pattern usually
	means the path is excluded, but if the pattern begins with "`!`"
	then it is a negated pattern and matching it means the path is
	NOT excluded.)
+
For precedence rules within and between exclude sources, see
linkgit:gitignore[5].

--stdin::
	Read pathnames from the standard input, one per line,
	instead of from the command-line.

-z::
	The output format is modified to be machine-parsable (see
	below).  If `--stdin` is also given, input paths are separated
	with a NUL character instead of a linefeed character.

-n, --non-matching::
	Show given paths which don't match any pattern.  This only
	makes sense when `--verbose` is enabled, otherwise it would
	not be possible to distinguish between paths which match a
	pattern and those which don't.

--no-index::
	Don't look in the index when undertaking the checks. This can
	be used to debug why a path became tracked by e.g. `git add .`
	and was not ignored by the rules as expected by the user or when
	developing patterns including negation to match a path previously
	added with `git add -f`.

OUTPUT
------

By default, any of the given pathnames which match an ignore pattern
will be output, one per line.  If no pattern matches

Title: Git Check Ignore Command
Summary
The git-check-ignore command is used to debug gitignore and exclude files, checking if a given pathname is excluded by .gitignore or other exclude mechanisms and outputting the path if it is excluded.