plucky (1) git-for-each-ref.1.gz
NAME
git-for-each-ref - Output information on each ref
SYNOPSIS
git for-each-ref [--count=<count>] [--shell|--perl|--python|--tcl]
[(--sort=<key>)...] [--format=<format>]
[--include-root-refs] [ --stdin | <pattern>... ]
[--points-at=<object>]
[--merged[=<object>]] [--no-merged[=<object>]]
[--contains[=<object>]] [--no-contains[=<object>]]
[--exclude=<pattern> ...]
DESCRIPTION
Iterate over all refs that match <pattern> and show them according to the given <format>, after sorting
them according to the given set of <key>. If <count> is given, stop after showing that many refs. The
interpolated values in <format> can optionally be quoted as string literals in the specified host
language allowing their direct evaluation in that language.
OPTIONS
<pattern>...
If one or more patterns are given, only refs are shown that match against at least one pattern,
either using fnmatch(3) or literally, in the latter case matching completely or from the beginning up
to a slash.
--stdin
If --stdin is supplied, then the list of patterns is read from standard input instead of from the
argument list.
--count=<count>
By default the command shows all refs that match <pattern>. This option makes it stop after showing
that many refs.
--sort=<key>
A field name to sort on. Prefix - to sort in descending order of the value. When unspecified, refname
is used. You may use the --sort=<key> option multiple times, in which case the last key becomes the
primary key.
--format=<format>
A string that interpolates %(fieldname) from a ref being shown and the object it points at. In
addition, the string literal %% renders as % and %xx - where xx are hex digits - renders as the
character with hex code xx. For example, %00 interpolates to \0 (NUL), %09 to \t (TAB), and %0a to \n
(LF).
When unspecified, <format> defaults to %(objectname) SPC %(objecttype) TAB %(refname).
--color[=<when>]
Respect any colors specified in the --format option. The <when> field must be one of always, never,
or auto (if <when> is absent, behave as if always was given).
--shell, --perl, --python, --tcl
If given, strings that substitute %(fieldname) placeholders are quoted as string literals suitable
for the specified host language. This is meant to produce a scriptlet that can directly be `eval`ed.
--points-at=<object>
Only list refs which points at the given object.
--merged[=<object>]
Only list refs whose tips are reachable from the specified commit (HEAD if not specified).
--no-merged[=<object>]
Only list refs whose tips are not reachable from the specified commit (HEAD if not specified).
--contains[=<object>]
Only list refs which contain the specified commit (HEAD if not specified).
--no-contains[=<object>]
Only list refs which don’t contain the specified commit (HEAD if not specified).
--ignore-case
Sorting and filtering refs are case insensitive.
--omit-empty
Do not print a newline after formatted refs where the format expands to the empty string.
--exclude=<pattern>
If one or more patterns are given, only refs which do not match any excluded pattern(s) are shown.
Matching is done using the same rules as <pattern> above.
--include-root-refs
List root refs (HEAD and pseudorefs) apart from regular refs.
FIELD NAMES
Various values from structured fields in referenced objects can be used to interpolate into the resulting
output, or as sort keys.
For all objects, the following names can be used:
refname
The name of the ref (the part after $GIT_DIR/). For a non-ambiguous short name of the ref append
:short. The option core.warnAmbiguousRefs is used to select the strict abbreviation mode. If
lstrip=<N> (rstrip=<N>) is appended, strips <N> slash-separated path components from the front (back)
of the refname (e.g. %(refname:lstrip=2) turns refs/tags/foo into foo and %(refname:rstrip=2) turns
refs/tags/foo into refs). If <N> is a negative number, strip as many path components as necessary
from the specified end to leave -<N> path components (e.g. %(refname:lstrip=-2) turns refs/tags/foo
into tags/foo and %(refname:rstrip=-1) turns refs/tags/foo into refs). When the ref does not have
enough components, the result becomes an empty string if stripping with positive <N>, or it becomes
the full refname if stripping with negative <N>. Neither is an error.
strip can be used as a synonym to lstrip.
objecttype
The type of the object (blob, tree, commit, tag).
objectsize
The size of the object (the same as git cat-file -s reports). Append :disk to get the size, in bytes,
that the object takes up on disk. See the note about on-disk sizes in the CAVEATS section below.
objectname
The object name (aka SHA-1). For a non-ambiguous abbreviation of the object name append :short. For
an abbreviation of the object name with desired length append :short=<length>, where the minimum
length is MINIMUM_ABBREV. The length may be exceeded to ensure unique object names.
deltabase
This expands to the object name of the delta base for the given object, if it is stored as a delta.
Otherwise it expands to the null object name (all zeroes).
upstream
The name of a local ref which can be considered “upstream” from the displayed ref. Respects :short,
:lstrip and :rstrip in the same way as refname above. Additionally respects :track to show "[ahead N,
behind M]" and :trackshort to show the terse version: ">" (ahead), "<" (behind), "<>" (ahead and
behind), or "=" (in sync). :track also prints "[gone]" whenever unknown upstream ref is encountered.
Append :track,nobracket to show tracking information without brackets (i.e "ahead N, behind M").
For any remote-tracking branch %(upstream), %(upstream:remotename) and %(upstream:remoteref) refer to
the name of the remote and the name of the tracked remote ref, respectively. In other words, the
remote-tracking branch can be updated explicitly and individually by using the refspec
%(upstream:remoteref):%(upstream) to fetch from %(upstream:remotename).
Has no effect if the ref does not have tracking information associated with it. All the options apart
from nobracket are mutually exclusive, but if used together the last option is selected.
push
The name of a local ref which represents the @{push} location for the displayed ref. Respects :short,
:lstrip, :rstrip, :track, :trackshort, :remotename, and :remoteref options as upstream does. Produces
an empty string if no @{push} ref is configured.
HEAD
* if HEAD matches current ref (the checked out branch), ' ' otherwise.
color
Change output color. Followed by :<colorname>, where color names are described under Values in the
"CONFIGURATION FILE" section of git-config(1). For example, %(color:bold red).
align
Left-, middle-, or right-align the content between %(align:...) and %(end). The "align:" is followed
by width=<width> and position=<position> in any order separated by a comma, where the <position> is
either left, right or middle, default being left and <width> is the total length of the content with
alignment. For brevity, the "width=" and/or "position=" prefixes may be omitted, and bare <width> and
<position> used instead. For instance, %(align:<width>,<position>). If the contents length is more
than the width then no alignment is performed. If used with --quote everything in between
%(align:...) and %(end) is quoted, but if nested then only the topmost level performs quoting.
if
Used as %(if)...%(then)...%(end) or %(if)...%(then)...%(else)...%(end). If there is an atom with
value or string literal after the %(if) then everything after the %(then) is printed, else if the
%(else) atom is used, then everything after %(else) is printed. We ignore space when evaluating the
string before %(then), this is useful when we use the %(HEAD) atom which prints either "*" or " " and
we want to apply the if condition only on the HEAD ref. Append ":equals=<string>" or
":notequals=<string>" to compare the value between the %(if:...) and %(then) atoms with the given
string.
symref
The ref which the given symbolic ref refers to. If not a symbolic ref, nothing is printed. Respects
the :short, :lstrip and :rstrip options in the same way as refname above.
signature
The GPG signature of a commit.
signature:grade
Show "G" for a good (valid) signature, "B" for a bad signature, "U" for a good signature with unknown
validity, "X" for a good signature that has expired, "Y" for a good signature made by an expired key,
"R" for a good signature made by a revoked key, "E" if the signature cannot be checked (e.g. missing
key) and "N" for no signature.
signature:signer
The signer of the GPG signature of a commit.
signature:key
The key of the GPG signature of a commit.
signature:fingerprint
The fingerprint of the GPG signature of a commit.
signature:primarykeyfingerprint
The primary key fingerprint of the GPG signature of a commit.
signature:trustlevel
The trust level of the GPG signature of a commit. Possible outputs are ultimate, fully, marginal,
never and undefined.
worktreepath
The absolute path to the worktree in which the ref is checked out, if it is checked out in any linked
worktree. Empty string otherwise.
ahead-behind:<committish>
Two integers, separated by a space, demonstrating the number of commits ahead and behind,
respectively, when comparing the output ref to the <committish> specified in the format.
is-base:<committish>
In at most one row, (<committish>) will appear to indicate the ref that is most likely the ref used
as a starting point for the branch that produced <committish>. This choice is made using a heuristic:
choose the ref that minimizes the number of commits in the first-parent history of <committish> and
not in the first-parent history of the ref.
For example, consider the following figure of first-parent histories of several refs:
*--*--*--*--*--* refs/heads/A
\
\
*--*--*--* refs/heads/B
\ \
\ \
* * refs/heads/C
\
\
*--* refs/heads/D
Here, if A, B, and C are the filtered references, and the format string is %(refname):%(is-base:D),
then the output would be
refs/heads/A:
refs/heads/B:(D)
refs/heads/C:
This is because the first-parent history of D has its earliest intersection with the first-parent
histories of the filtered refs at a common first-parent ancestor of B and C and ties are broken by
the earliest ref in the sorted order.
Note that this token will not appear if the first-parent history of <committish> does not intersect
the first-parent histories of the filtered refs.
describe[:options]
A human-readable name, like git-describe(1); empty string for undescribable commits. The describe
string may be followed by a colon and one or more comma-separated options.
tags=<bool-value>
Instead of only considering annotated tags, consider lightweight tags as well; see the
corresponding option in git-describe(1) for details.
abbrev=<number>
Use at least <number> hexadecimal digits; see the corresponding option in git-describe(1) for
details.
match=<pattern>
Only consider tags matching the given glob(7) pattern, excluding the "refs/tags/" prefix; see the
corresponding option in git-describe(1) for details.
exclude=<pattern>
Do not consider tags matching the given glob(7) pattern, excluding the "refs/tags/" prefix; see
the corresponding option in git-describe(1) for details.
In addition to the above, for commit and tag objects, the header field names (tree, parent, object, type,
and tag) can be used to specify the value in the header field. Fields tree and parent can also be used
with modifier :short and :short=<length> just like objectname.
For commit and tag objects, the special creatordate and creator fields will correspond to the appropriate
date or name-email-date tuple from the committer or tagger fields depending on the object type. These are
intended for working on a mix of annotated and lightweight tags.
For tag objects, a fieldname prefixed with an asterisk (*) expands to the fieldname value of the peeled
object, rather than that of the tag object itself.
Fields that have name-email-date tuple as its value (author, committer, and tagger) can be suffixed with
name, email, and date to extract the named component. For email fields (authoremail, committeremail and
taggeremail), :trim can be appended to get the email without angle brackets, and :localpart to get the
part before the @ symbol out of the trimmed email. In addition to these, the :mailmap option and the
corresponding :mailmap,trim and :mailmap,localpart can be used (order does not matter) to get values of
the name and email according to the .mailmap file or according to the file set in the mailmap.file or
mailmap.blob configuration variable (see gitmailmap(5)).
The raw data in an object is raw.
raw:size
The raw data size of the object.
Note that --format=%(raw) can not be used with --python, --shell, --tcl, because such language may not
support arbitrary binary data in their string variable type.
The message in a commit or a tag object is contents, from which contents:<part> can be used to extract
various parts out of:
contents:size
The size in bytes of the commit or tag message.
contents:subject
The first paragraph of the message, which typically is a single line, is taken as the "subject" of
the commit or the tag message. Instead of contents:subject, field subject can also be used to obtain
same results. :sanitize can be appended to subject for subject line suitable for filename.
contents:body
The remainder of the commit or the tag message that follows the "subject".
contents:signature
The optional GPG signature of the tag.
contents:lines=N
The first N lines of the message.
Additionally, the trailers as interpreted by git-interpret-trailers(1) are obtained as trailers[:options]
(or by using the historical alias contents:trailers[:options]). For valid [:option] values see trailers
section of git-log(1).
For sorting purposes, fields with numeric values sort in numeric order (objectsize, authordate,
committerdate, creatordate, taggerdate). All other fields are used to sort in their byte-value order.
There is also an option to sort by versions, this can be done by using the fieldname version:refname or
its alias v:refname.
In any case, a field name that refers to a field inapplicable to the object referred by the ref does not
cause an error. It returns an empty string instead.
As a special case for the date-type fields, you may specify a format for the date by adding : followed by
date format name (see the values the --date option to git-rev-list(1) takes). If this formatting is
provided in a --sort key, references will be sorted according to the byte-value of the formatted string
rather than the numeric value of the underlying timestamp.
Some atoms like %(align) and %(if) always require a matching %(end). We call them "opening atoms" and
sometimes denote them as %($open).
When a scripting language specific quoting is in effect, everything between a top-level opening atom and
its matching %(end) is evaluated according to the semantics of the opening atom and only its result from
the top-level is quoted.
EXAMPLES
An example directly producing formatted text. Show the most recent 3 tagged commits:
#!/bin/sh
git for-each-ref --count=3 --sort='-*authordate' \
--format='From: %(*authorname) %(*authoremail)
Subject: %(*subject)
Date: %(*authordate)
Ref: %(*refname)
%(*body)
' 'refs/tags'
A simple example showing the use of shell eval on the output, demonstrating the use of --shell. List the
prefixes of all heads:
#!/bin/sh
git for-each-ref --shell --format="ref=%(refname)" refs/heads | \
while read entry
do
eval "$entry"
echo `dirname $ref`
done
A bit more elaborate report on tags, demonstrating that the format may be an entire script:
#!/bin/sh
fmt='
r=%(refname)
t=%(*objecttype)
T=${r#refs/tags/}
o=%(*objectname)
n=%(*authorname)
e=%(*authoremail)
s=%(*subject)
d=%(*authordate)
b=%(*body)
kind=Tag
if test "z$t" = z
then
# could be a lightweight tag
t=%(objecttype)
kind="Lightweight tag"
o=%(objectname)
n=%(authorname)
e=%(authoremail)
s=%(subject)
d=%(authordate)
b=%(body)
fi
echo "$kind $T points at a $t object $o"
if test "z$t" = zcommit
then
echo "The commit was authored by $n $e
at $d, and titled
$s
Its message reads as:
"
echo "$b" | sed -e "s/^/ /"
echo
fi
'
eval=`git for-each-ref --shell --format="$fmt" \
--sort='*objecttype' \
--sort=-taggerdate \
refs/tags`
eval "$eval"
An example to show the usage of %(if)...%(then)...%(else)...%(end). This prefixes the current branch with
a star.
git for-each-ref --format="%(if)%(HEAD)%(then)* %(else) %(end)%(refname:short)" refs/heads/
An example to show the usage of %(if)...%(then)...%(end). This prints the authorname, if present.
git for-each-ref --format="%(refname)%(if)%(authorname)%(then) Authored by: %(authorname)%(end)"
CAVEATS
Note that the sizes of objects on disk are reported accurately, but care should be taken in drawing
conclusions about which refs or objects are responsible for disk usage. The size of a packed non-delta
object may be much larger than the size of objects which delta against it, but the choice of which object
is the base and which is the delta is arbitrary and is subject to change during a repack.
Note also that multiple copies of an object may be present in the object database; in this case, it is
undefined which copy’s size or delta base will be reported.
NOTES
When combining multiple --contains and --no-contains filters, only references that contain at least one
of the --contains commits and contain none of the --no-contains commits are shown.
When combining multiple --merged and --no-merged filters, only references that are reachable from at
least one of the --merged commits and from none of the --no-merged commits are shown.
SEE ALSO
git-show-ref(1)
GIT
Part of the git(1) suite