mercurial/help/revisions.txt
changeset 9999 f91e5630ce7e
parent 9540 cad36e496640
child 16740 43cfe56121d3
equal deleted inserted replaced
9998:4a3c388f8c69 9999:f91e5630ce7e
       
     1 Mercurial supports several ways to specify individual revisions.
       
     2 
       
     3 A plain integer is treated as a revision number. Negative integers are
       
     4 treated as sequential offsets from the tip, with -1 denoting the tip,
       
     5 -2 denoting the revision prior to the tip, and so forth.
       
     6 
       
     7 A 40-digit hexadecimal string is treated as a unique revision
       
     8 identifier.
       
     9 
       
    10 A hexadecimal string less than 40 characters long is treated as a
       
    11 unique revision identifier and is referred to as a short-form
       
    12 identifier. A short-form identifier is only valid if it is the prefix
       
    13 of exactly one full-length identifier.
       
    14 
       
    15 Any other string is treated as a tag or branch name. A tag name is a
       
    16 symbolic name associated with a revision identifier. A branch name
       
    17 denotes the tipmost revision of that branch. Tag and branch names must
       
    18 not contain the ":" character.
       
    19 
       
    20 The reserved name "tip" is a special tag that always identifies the
       
    21 most recent revision.
       
    22 
       
    23 The reserved name "null" indicates the null revision. This is the
       
    24 revision of an empty repository, and the parent of revision 0.
       
    25 
       
    26 The reserved name "." indicates the working directory parent. If no
       
    27 working directory is checked out, it is equivalent to null. If an
       
    28 uncommitted merge is in progress, "." is the revision of the first
       
    29 parent.