┌────────────────────────────────────────────────────────────────────────────┐
│ Determination of SCCS Identification String │
├────────────────────────────────────────────────────────────────────────────┤
│ SID* -b Keyletter Other SID SID of Delta │
│Specified Used† Conditions Retrieved to be Created │
├────────────────────────────────────────────────────────────────────────────┤
│none‡ no R defaults to mR mR.mL mR.(mL+1) │
├────────────────────────────────────────────────────────────────────────────┤
│none‡ yes R defaults to mR mR.mL mR.mL.(mB+1).1 │
├────────────────────────────────────────────────────────────────────────────┤
│R no R > mR mR.mL R.1*** │
├────────────────────────────────────────────────────────────────────────────┤
│R no R = mR mR.mL mR.(mL+1) │
├────────────────────────────────────────────────────────────────────────────┤
│R yes R > mR mR.mL mR.mL.(mB+1).1 │
├────────────────────────────────────────────────────────────────────────────┤
│R yes R = mR mR.mL mR.mL.(mB+1).1 │
├────────────────────────────────────────────────────────────────────────────┤
│R - R < mR and R does hR.mL** hR.mL.(mB+1).1 │
│ not exist │
├────────────────────────────────────────────────────────────────────────────┤
│R - Trunk successor in R.mL R.mL.(mB+1).1 │
│ release > R and R │
│ exists │
├────────────────────────────────────────────────────────────────────────────┤
│R.L no No trunk successor R.L R.(L+1) │
├────────────────────────────────────────────────────────────────────────────┤
│R.L yes No trunk successor R.L R.L.(mB+1).1 │
├────────────────────────────────────────────────────────────────────────────┤
│R.L - Trunk successor in R.L R.L.(mB+1).1 │
│ release ≥ R │
├────────────────────────────────────────────────────────────────────────────┤
│R.L.B no No branch successor R.L.B.mS R.L.B.(mS+1) │
├────────────────────────────────────────────────────────────────────────────┤
│R.L.B yes No branch successor R.L.B.mS R.L.(mB+1).1 │
├────────────────────────────────────────────────────────────────────────────┤
│R.L.B.S no No branch successor R.L.B.S R.L.B.(S+1) │
├────────────────────────────────────────────────────────────────────────────┤
│R.L.B.S yes No branch successor R.L.B.S R.L.(mB+1).1 │
├────────────────────────────────────────────────────────────────────────────┤
│R.L.B.S - Branch successor R.L.B.S R.L.(mB+1).1 │
└────────────────────────────────────────────────────────────────────────────┘
* R, L, B, and S are the release, level, branch, and
sequence components of the SID, respectively; m means
maximum. Thus, for example, R.mL means ``the maximum
level number within release R''; R.L.(mB+1).1 means ``the
first sequence number on the new branch (that is, maximum
branch number plus one) of level L within release R''.
Note that if the SID specified is of the form R.L, R.L.B,
or R.L.B.S, each of the specified components shall exist.
** hR is the highest existing release that is lower than the
specified, nonexistent, release R.
*** This is used to force creation of the first delta in a
new release.
† The -b option is effective only if the b flag is present
in the file. An entry of '-' means ``irrelevant''.
‡ This case applies if the d (default SID) flag is not
present in the file. If the d flag is present in the
file, then the SID obtained from the d flag is
interpreted as if it had been specified on the command
line. Thus, one of the other cases in this table
applies.
System Date and Time
When a g-file is generated, the creation time of deltas in the
SCCS file may be taken into account. If any of these times are
apparently in the future, the behavior is unspecified.
Identification Keywords
Identifying information shall be inserted into the text retrieved
from the SCCS file by replacing identification keywords with
their value wherever they occur. The following keywords may be
used in the text stored in an SCCS file:
%M% Module name: either the value of the m flag in the
file, or if absent, the name of the SCCS file with the
leading s. removed.
%I% SCCS identification (SID) (%R%.%L% or %R%.%L%.%B%.%S%)
of the retrieved text.
%R% Release.
%L% Level.
%B% Branch.
%S% Sequence.
%D% Current date (YY/MM/DD).
%H% Current date (MM/DD/YY).
%T% Current time (HH:MM:SS).
%E% Date newest applied delta was created (YY/MM/DD).
%G% Date newest applied delta was created (MM/DD/YY).
%U% Time newest applied delta was created (HH:MM:SS).
%Y% Module type: value of the t flag in the SCCS file.
%F% SCCS filename.
%P% SCCS absolute pathname.
%Q% The value of the q flag in the file.
%C% Current line number. This keyword is intended for
identifying messages output by the program, such as
``this should not have happened'' type errors. It is
not intended to be used on every line to provide
sequence numbers.
%Z% The four-character string "@(#)" recognizable by what.
%W% A shorthand notation for constructing what strings:
%W%=%Z%%M%<tab>%I%
%A% Another shorthand notation for constructing what
strings:
%A%=%Z%%Y%%M%%I%%Z%
