diff options
Diffstat (limited to 'Documentation/git-show-ref.txt')
| -rw-r--r-- | Documentation/git-show-ref.txt | 62 |
1 files changed, 44 insertions, 18 deletions
diff --git a/Documentation/git-show-ref.txt b/Documentation/git-show-ref.txt index ab4d271..ba75747 100644 --- a/Documentation/git-show-ref.txt +++ b/Documentation/git-show-ref.txt @@ -8,10 +8,14 @@ git-show-ref - List references in a local repository SYNOPSIS -------- [verse] -'git show-ref' [-q|--quiet] [--verify] [--head] [-d|--dereference] - [-s|--hash[=<n>]] [--abbrev[=<n>]] [--tags] +'git show-ref' [--head] [-d | --dereference] + [-s | --hash[=<n>]] [--abbrev[=<n>]] [--tags] [--heads] [--] [<pattern>...] +'git show-ref' --verify [-q | --quiet] [-d | --dereference] + [-s | --hash[=<n>]] [--abbrev[=<n>]] + [--] [<ref>...] 'git show-ref' --exclude-existing[=<pattern>] +'git show-ref' --exists <ref> DESCRIPTION ----------- @@ -23,10 +27,14 @@ particular ref exists. By default, shows the tags, heads, and remote refs. -The --exclude-existing form is a filter that does the inverse. It reads +The `--exclude-existing` form is a filter that does the inverse. It reads refs from stdin, one ref per line, and shows those that don't exist in the local repository. +The `--exists` form can be used to check for the existence of a single +references. This form does not verify whether the reference resolves to an +actual object. + Use of this utility is encouraged in favor of directly accessing files under the `.git` directory. @@ -47,14 +55,14 @@ OPTIONS -d:: --dereference:: - Dereference tags into object IDs as well. They will be shown with "{caret}{}" + Dereference tags into object IDs as well. They will be shown with `^{}` appended. -s:: --hash[=<n>]:: - Only show the SHA-1 hash, not the reference name. When combined with - --dereference the dereferenced tag will still be shown after the SHA-1. + Only show the OID, not the reference name. When combined with + `--dereference`, the dereferenced tag will still be shown after the OID. --verify:: @@ -62,6 +70,12 @@ OPTIONS Aside from returning an error code of 1, it will also print an error message if `--quiet` was not specified. +--exists:: + + Check whether the given reference exists. Returns an exit code of 0 if + it does, 2 if it is missing, and 1 in case looking up the reference + failed with an error other than the reference being missing. + --abbrev[=<n>]:: Abbreviate the object name. When using `--hash`, you do @@ -70,15 +84,15 @@ OPTIONS -q:: --quiet:: - Do not print any results to stdout. When combined with `--verify` this - can be used to silently check if a reference exists. + Do not print any results to stdout. Can be used with `--verify` to + silently check if a reference exists. --exclude-existing[=<pattern>]:: - Make 'git show-ref' act as a filter that reads refs from stdin of the - form "`^(?:<anything>\s)?<refname>(?:\^{})?$`" + Make `git show-ref` act as a filter that reads refs from stdin of the + form `^(?:<anything>\s)?<refname>(?:\^{})?$` and performs the following actions on each: - (1) strip "{caret}{}" at the end of line if any; + (1) strip `^{}` at the end of line if any; (2) ignore if pattern is provided and does not head-match refname; (3) warn if refname is not a well-formed refname and skip; (4) ignore if refname is a ref that exists in the local repository; @@ -96,7 +110,13 @@ OPTIONS OUTPUT ------ -The output is in the format: '<SHA-1 ID>' '<space>' '<reference name>'. +The output is in the format: + +------------ +<oid> SP <ref> LF +------------ + +For example, ----------------------------------------------------------------------------- $ git show-ref --head --dereference @@ -110,7 +130,13 @@ $ git show-ref --head --dereference ... ----------------------------------------------------------------------------- -When using --hash (and not --dereference) the output format is: '<SHA-1 ID>' +When using `--hash` (and not `--dereference`), the output is in the format: + +------------ +<oid> LF +------------ + +For example, ----------------------------------------------------------------------------- $ git show-ref --heads --hash @@ -132,7 +158,7 @@ use: ----------------------------------------------------------------------------- This will show "refs/heads/master" but also "refs/remote/other-repo/master", -if such references exists. +if such references exist. When using the `--verify` flag, the command requires an exact path: @@ -142,10 +168,10 @@ When using the `--verify` flag, the command requires an exact path: will only match the exact branch called "master". -If nothing matches, 'git show-ref' will return an error code of 1, +If nothing matches, `git show-ref` will return an error code of 1, and in the case of verification, it will show an error message. -For scripting, you can ask it to be quiet with the "--quiet" flag, which +For scripting, you can ask it to be quiet with the `--quiet` flag, which allows you to do things like ----------------------------------------------------------------------------- @@ -157,11 +183,11 @@ to check whether a particular branch exists or not (notice how we don't actually want to show any results, and we want to use the full refname for it in order to not trigger the problem with ambiguous partial matches). -To show only tags, or only proper branch heads, use "--tags" and/or "--heads" +To show only tags, or only proper branch heads, use `--tags` and/or `--heads` respectively (using both means that it shows tags and heads, but not other random references under the refs/ subdirectory). -To do automatic tag object dereferencing, use the "-d" or "--dereference" +To do automatic tag object dereferencing, use the `-d` or `--dereference` flag, so you can do ----------------------------------------------------------------------------- |