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git/Documentation/git-ls-tree.txt
Ævar Arnfjörð Bjarmason acd34fd5f6 ls-tree doc: document interaction with submodules
The ls-tree documentation had never been updated after it learned to
interact with submodules to explicitly mention them. The initial
support was added in f35a6d3bce (Teach core object handling functions
about gitlinks, 2007-04-09). E.g. the discussion of --long added in
f35a6d3bce (Teach core object handling functions about gitlinks,
2007-04-09) didn't explicitly mention them.

But this documentation added in 455923e0a1 (ls-tree: introduce
"--format" option, 2022-03-23) had no such excuse, and was actively
misleading by providing an exhaustive but incomplete list of object
types we'd emit.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-08 11:21:11 -07:00

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git-ls-tree(1)
==============
NAME
----
git-ls-tree - List the contents of a tree object
SYNOPSIS
--------
[verse]
'git ls-tree' [-d] [-r] [-t] [-l] [-z]
[--name-only] [--name-status] [--object-only] [--full-name] [--full-tree] [--abbrev[=<n>]] [--format=<format>]
<tree-ish> [<path>...]
DESCRIPTION
-----------
Lists the contents of a given tree object, like what "/bin/ls -a" does
in the current working directory. Note that:
- the behaviour is slightly different from that of "/bin/ls" in that the
'<path>' denotes just a list of patterns to match, e.g. so specifying
directory name (without `-r`) will behave differently, and order of the
arguments does not matter.
- the behaviour is similar to that of "/bin/ls" in that the '<path>' is
taken as relative to the current working directory. E.g. when you are
in a directory 'sub' that has a directory 'dir', you can run 'git
ls-tree -r HEAD dir' to list the contents of the tree (that is
`sub/dir` in `HEAD`). You don't want to give a tree that is not at the
root level (e.g. `git ls-tree -r HEAD:sub dir`) in this case, as that
would result in asking for `sub/sub/dir` in the `HEAD` commit.
However, the current working directory can be ignored by passing
--full-tree option.
OPTIONS
-------
<tree-ish>::
Id of a tree-ish.
-d::
Show only the named tree entry itself, not its children.
-r::
Recurse into sub-trees.
-t::
Show tree entries even when going to recurse them. Has no effect
if `-r` was not passed. `-d` implies `-t`.
-l::
--long::
Show object size of blob (file) entries.
-z::
\0 line termination on output and do not quote filenames.
See OUTPUT FORMAT below for more information.
--name-only::
--name-status::
List only filenames (instead of the "long" output), one per line.
Cannot be combined with `--object-only`.
--object-only::
List only names of the objects, one per line. Cannot be combined
with `--name-only` or `--name-status`.
This is equivalent to specifying `--format='%(objectname)'`, but
for both this option and that exact format the command takes a
hand-optimized codepath instead of going through the generic
formatting mechanism.
--abbrev[=<n>]::
Instead of showing the full 40-byte hexadecimal object
lines, show the shortest prefix that is at least '<n>'
hexdigits long that uniquely refers the object.
Non default number of digits can be specified with --abbrev=<n>.
--full-name::
Instead of showing the path names relative to the current working
directory, show the full path names.
--full-tree::
Do not limit the listing to the current working directory.
Implies --full-name.
--format=<format>::
A string that interpolates `%(fieldname)` from the result
being shown. It also interpolates `%%` to `%`, and
`%xx` where `xx` are hex digits interpolates to character
with hex code `xx`; for example `%00` interpolates to
`\0` (NUL), `%09` to `\t` (TAB) and `%0a` to `\n` (LF).
When specified, `--format` cannot be combined with other
format-altering options, including `--long`, `--name-only`
and `--object-only`.
[<path>...]::
When paths are given, show them (note that this isn't really raw
pathnames, but rather a list of patterns to match). Otherwise
implicitly uses the root level of the tree as the sole path argument.
Output Format
-------------
The output format of `ls-tree` is determined by either the `--format`
option, or other format-altering options such as `--name-only` etc.
(see `--format` above).
The use of certain `--format` directives is equivalent to using those
options, but invoking the full formatting machinery can be slower than
using an appropriate formatting option.
In cases where the `--format` would exactly map to an existing option
`ls-tree` will use the appropriate faster path. Thus the default format
is equivalent to:
%(objectmode) %(objecttype) %(objectname)%x09%(path)
This output format is compatible with what `--index-info --stdin` of
'git update-index' expects.
When the `-l` option is used, format changes to
%(objectmode) %(objecttype) %(objectname) %(objectsize:padded)%x09%(path)
Object size identified by <objectname> is given in bytes, and right-justified
with minimum width of 7 characters. Object size is given only for blobs
(file) entries; for other entries `-` character is used in place of size.
Without the `-z` option, pathnames with "unusual" characters are
quoted as explained for the configuration variable `core.quotePath`
(see linkgit:git-config[1]). Using `-z` the filename is output
verbatim and the line is terminated by a NUL byte.
Customized format:
It is possible to print in a custom format by using the `--format` option,
which is able to interpolate different fields using a `%(fieldname)` notation.
For example, if you only care about the "objectname" and "path" fields, you
can execute with a specific "--format" like
git ls-tree --format='%(objectname) %(path)' <tree-ish>
FIELD NAMES
-----------
Various values from structured fields can be used to interpolate
into the resulting output. For each outputing line, the following
names can be used:
objectmode::
The mode of the object.
objecttype::
The type of the object (`commit`, `blob` or `tree`).
objectname::
The name of the object.
objectsize[:padded]::
The size of a `blob` object ("-" if it's a `commit` or `tree`).
It also supports a padded format of size with "%(objectsize:padded)".
path::
The pathname of the object.
GIT
---
Part of the linkgit:git[1] suite