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Signed-off-by: Jonathan Nieder <jrnieder@uchicago.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
git-check-ref-format(1)
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=======================
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NAME
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----
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git-check-ref-format - Make sure ref name is well formed
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SYNOPSIS
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--------
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'git check-ref-format' <refname>
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DESCRIPTION
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-----------
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Checks if a given 'refname' is acceptable, and exits non-zero if
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it is not.
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A reference is used in git to specify branches and tags. A
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branch head is stored under `$GIT_DIR/refs/heads` directory, and
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a tag is stored under `$GIT_DIR/refs/tags` directory. git
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imposes the following rules on how refs are named:
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. It can include slash `/` for hierarchical (directory)
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grouping, but no slash-separated component can begin with a
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dot `.`;
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. It cannot have two consecutive dots `..` anywhere;
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. It cannot have ASCII control character (i.e. bytes whose
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values are lower than \040, or \177 `DEL`), space, tilde `~`,
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caret `{caret}`, colon `:`, question-mark `?`, asterisk `*`,
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or open bracket `[` anywhere;
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. It cannot end with a slash `/`.
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These rules makes it easy for shell script based tools to parse
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refnames, pathname expansion by the shell when a refname is used
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unquoted (by mistake), and also avoids ambiguities in certain
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refname expressions (see linkgit:git-rev-parse[1]). Namely:
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. double-dot `..` are often used as in `ref1..ref2`, and in some
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context this notation means `{caret}ref1 ref2` (i.e. not in
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ref1 and in ref2).
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. tilde `~` and caret `{caret}` are used to introduce postfix
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'nth parent' and 'peel onion' operation.
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. colon `:` is used as in `srcref:dstref` to mean "use srcref\'s
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value and store it in dstref" in fetch and push operations.
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It may also be used to select a specific object such as with
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`git-cat-file`: "git cat-file blob v1.3.3:refs.c".
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GIT
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---
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Part of the linkgit:git[1] suite
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