diff options
Diffstat (limited to 'Documentation/git-rev-parse.txt')
| -rw-r--r-- | Documentation/git-rev-parse.txt | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt index 10a116f..947d62f 100644 --- a/Documentation/git-rev-parse.txt +++ b/Documentation/git-rev-parse.txt @@ -60,8 +60,19 @@ OPTIONS instead. --verify:: - The parameter given must be usable as a single, valid - object name. Otherwise barf and abort. + Verify that exactly one parameter is provided, and that it + can be turned into a raw 20-byte SHA-1 that can be used to + access the object database. If so, emit it to the standard + output; otherwise, error out. ++ +If you want to make sure that the output actually names an object in +your object database and/or can be used as a specific type of object +you require, you can add "^{type}" peeling operator to the parmeter. +For example, `git rev-parse "$VAR^{commit}"` will make sure `$VAR` +names an existing object that is a commit-ish (i.e. a commit, or an +annotated tag that points at a commit). To make sure that `$VAR` +names an existing object of any type, `git rev-parse "$VAR^{object}"` +can be used. -q:: --quiet:: @@ -84,7 +95,7 @@ OPTIONS one. --symbolic:: - Usually the object names are output in SHA1 form (with + Usually the object names are output in SHA-1 form (with possible '{caret}' prefix); this option makes them output in a form as close to the original input as possible. @@ -169,7 +180,7 @@ print a message to stderr and exit with nonzero status. --short:: --short=number:: - Instead of outputting the full SHA1 values of object names try to + Instead of outputting the full SHA-1 values of object names try to abbreviate them to a shorter unique name. When no length is specified 7 is used. The minimum length is 4. @@ -308,12 +319,12 @@ $ git rev-parse --verify HEAD * Print the commit object name from the revision in the $REV shell variable: + ------------ -$ git rev-parse --verify $REV +$ git rev-parse --verify $REV^{commit} ------------ + This will error out if $REV is empty or not a valid revision. -* Same as above: +* Similar to above: + ------------ $ git rev-parse --default master --verify $REV |