127 lines
4.1 KiB
Plaintext
127 lines
4.1 KiB
Plaintext
git-check-ref-format(1)
|
|
=======================
|
|
|
|
NAME
|
|
----
|
|
git-check-ref-format - Ensures that a reference name is well formed
|
|
|
|
SYNOPSIS
|
|
--------
|
|
[verse]
|
|
'git check-ref-format' [--normalize]
|
|
[--[no-]allow-onelevel] [--refspec-pattern]
|
|
<refname>
|
|
'git check-ref-format' --branch <branchname-shorthand>
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
Checks if a given 'refname' is acceptable, and exits with a non-zero
|
|
status if it is not.
|
|
|
|
A reference is used in git to specify branches and tags. A
|
|
branch head is stored in the `refs/heads` hierarchy, while
|
|
a tag is stored in the `refs/tags` hierarchy of the ref namespace
|
|
(typically in `$GIT_DIR/refs/heads` and `$GIT_DIR/refs/tags`
|
|
directories or, as entries in file `$GIT_DIR/packed-refs`
|
|
if refs are packed by `git gc`).
|
|
|
|
git imposes the following rules on how references are named:
|
|
|
|
. They can include slash `/` for hierarchical (directory)
|
|
grouping, but no slash-separated component can begin with a
|
|
dot `.` or end with the sequence `.lock`.
|
|
|
|
. They must contain at least one `/`. This enforces the presence of a
|
|
category like `heads/`, `tags/` etc. but the actual names are not
|
|
restricted. If the `--allow-onelevel` option is used, this rule
|
|
is waived.
|
|
|
|
. They cannot have two consecutive dots `..` anywhere.
|
|
|
|
. They cannot have ASCII control characters (i.e. bytes whose
|
|
values are lower than \040, or \177 `DEL`), space, tilde `~`,
|
|
caret `{caret}`, or colon `:` anywhere.
|
|
|
|
. They cannot have question-mark `?`, asterisk `{asterisk}`, or open
|
|
bracket `[` anywhere. See the `--refspec-pattern` option below for
|
|
an exception to this rule.
|
|
|
|
. They cannot begin or end with a slash `/` or contain multiple
|
|
consecutive slashes (see the `--normalize` option below for an
|
|
exception to this rule)
|
|
|
|
. They cannot end with a dot `.`.
|
|
|
|
. They cannot contain a sequence `@{`.
|
|
|
|
. They cannot contain a `\`.
|
|
|
|
These rules make it easy for shell script based tools to parse
|
|
reference names, pathname expansion by the shell when a reference name is used
|
|
unquoted (by mistake), and also avoids ambiguities in certain
|
|
reference name expressions (see linkgit:gitrevisions[7]):
|
|
|
|
. A double-dot `..` is often used as in `ref1..ref2`, and in some
|
|
contexts this notation means `{caret}ref1 ref2` (i.e. not in
|
|
`ref1` and in `ref2`).
|
|
|
|
. A tilde `~` and caret `{caret}` are used to introduce the postfix
|
|
'nth parent' and 'peel onion' operation.
|
|
|
|
. A colon `:` is used as in `srcref:dstref` to mean "use srcref\'s
|
|
value and store it in dstref" in fetch and push operations.
|
|
It may also be used to select a specific object such as with
|
|
'git cat-file': "git cat-file blob v1.3.3:refs.c".
|
|
|
|
. at-open-brace `@{` is used as a notation to access a reflog entry.
|
|
|
|
With the `--branch` option, it expands the ``previous branch syntax''
|
|
`@{-n}`. For example, `@{-1}` is a way to refer the last branch you
|
|
were on. This option should be used by porcelains to accept this
|
|
syntax anywhere a branch name is expected, so they can act as if you
|
|
typed the branch name.
|
|
|
|
OPTIONS
|
|
-------
|
|
--allow-onelevel::
|
|
--no-allow-onelevel::
|
|
Controls whether one-level refnames are accepted (i.e.,
|
|
refnames that do not contain multiple `/`-separated
|
|
components). The default is `--no-allow-onelevel`.
|
|
|
|
--refspec-pattern::
|
|
Interpret <refname> as a reference name pattern for a refspec
|
|
(as used with remote repositories). If this option is
|
|
enabled, <refname> is allowed to contain a single `{asterisk}`
|
|
in place of a one full pathname component (e.g.,
|
|
`foo/{asterisk}/bar` but not `foo/bar{asterisk}`).
|
|
|
|
--normalize::
|
|
Normalize 'refname' by removing any leading slash (`/`)
|
|
characters and collapsing runs of adjacent slashes between
|
|
name components into a single slash. Iff the normalized
|
|
refname is valid then print it to standard output and exit
|
|
with a status of 0. (`--print` is a deprecated way to spell
|
|
`--normalize`.)
|
|
|
|
|
|
EXAMPLES
|
|
--------
|
|
|
|
* Print the name of the previous branch:
|
|
+
|
|
------------
|
|
$ git check-ref-format --branch @{-1}
|
|
------------
|
|
|
|
* Determine the reference name to use for a new branch:
|
|
+
|
|
------------
|
|
$ ref=$(git check-ref-format --normalize "refs/heads/$newbranch") ||
|
|
die "we do not like '$newbranch' as a branch name."
|
|
------------
|
|
|
|
GIT
|
|
---
|
|
Part of the linkgit:git[1] suite
|