rcs: Revision options
2.1.1 Revision options
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As to be expected in a revision control system, many options are of the
form ‘-FLAG[REV]’, where FLAG is a single letter (e.g., ‘r’). If
ommitted, REV defaults to the latest revision on the default branch. A
revision can be specified in many ways:
BR.N
Straightforward dot-notation, where BR specifies the branch.
.N
Like BR.N, using the default branch.
BR
Like BR.N, using the a command-specific computation of N, given the
current tip I. For ci (⇒ci), N would be ‘I + 1’, while for
other commands N would be simply I.
NAME
This is the symbolic name of a revision, as assigned previously by
a ‘ci -n’ or ‘ci -N’ command.
$
The command computes the effective revision by examining the values
of keyword expansions in the working file.
For commands that accept a range of revisions, the syntax is generally
‘REV1:REV2’, i.e., two revisions (specified as described above)
separated by a colon.