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Diffstat (limited to 'Documentation/git-check-ref-format.txt')
| -rw-r--r-- | Documentation/git-check-ref-format.txt | 49 |
1 files changed, 45 insertions, 4 deletions
diff --git a/Documentation/git-check-ref-format.txt b/Documentation/git-check-ref-format.txt index 171b68377..379eee673 100644 --- a/Documentation/git-check-ref-format.txt +++ b/Documentation/git-check-ref-format.txt @@ -7,7 +7,10 @@ git-check-ref-format - Ensures that a reference name is well formed SYNOPSIS -------- +[verse] 'git check-ref-format' <refname> +'git check-ref-format' --print <refname> +'git check-ref-format' --branch <branchname-shorthand> DESCRIPTION ----------- @@ -16,13 +19,18 @@ status if it is not. A reference is used in git to specify branches and tags. A branch head is stored under the `$GIT_DIR/refs/heads` directory, and -a tag is stored under the `$GIT_DIR/refs/tags` directory. git -imposes the following rules on how references are named: +a tag is stored under the `$GIT_DIR/refs/tags` directory (or, if refs +are packed by `git gc`, as entries in the `$GIT_DIR/packed-refs` file). +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 `.`. +. They must contain at least one `/`. This enforces the presence of a + category like `heads/`, `tags/` etc. but the actual names are not + restricted. + . They cannot have two consecutive dots `..` anywhere. . They cannot have ASCII control characters (i.e. bytes whose @@ -30,7 +38,13 @@ imposes the following rules on how references are named: caret `{caret}`, colon `:`, question-mark `?`, asterisk `*`, or open bracket `[` anywhere. -. They cannot end with a slash `/`. +. They cannot end with a slash `/` nor a dot `.`. + +. They cannot end with the sequence `.lock`. + +. 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 @@ -47,8 +61,35 @@ reference name expressions (see linkgit:git-rev-parse[1]): . 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". + '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 `--print` option, if 'refname' is acceptable, it prints the +canonicalized name of a hypothetical reference with that name. That is, +it prints 'refname' with any extra `/` characters removed. + +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. + +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=$(git check-ref-format --print "refs/heads/$newbranch") || +die "we do not like '$newbranch' as a branch name." +------------ GIT --- |