Name
cdc - change the delta commentary of an SCCS delta
Syntax
cdc -rSID [-m[mrlist]] [-y[comment]] files
Description
The cdc command changes the delta commentary, for the SID
(SCCS identification string) specified by the -r keyletter,
of each named SCCS file.
Delta commentary is defined to be the Modification Request
(MR) and comment information normally specified via the
delta(CP) command (-m and -y keyletters).
If a directory is named, cdc behaves as though each file in
the directory were specified as a named file, except that
non-SCCS files (last component of the path name does not
begin with s.) and unreadable files are silently ignored.
If a name of - is given, the standard input is read (see
Warnings, below) and each line of the standard input is
taken to be the name of an SCCS file to be processed.
Arguments to cdc, which may appear in any order, consist of
keyletter arguments and file names.
All the described keyletter arguments apply independently to
each named file:
-rSID Used to specify the SCCS identification
(SID) string of a delta for which the delta
commentary is to be changed.
-mmrlist If the SCCS file has the v flag set (see
admin(CP)) then a list of MR numbers to be
added and/or deleted in the delta
commentary of the SID specified by the -r
keyletter may be supplied. A null MR list
has no effect.
MR entries are added to the list of MRs in
the same manner as that of delta(CP). In
order to delete an MR, precede the MR
number with the character ! (see Examples,
below). If the MR to be deleted is
currently in the list of MRs, it is removed
and changed into a ``comment'' line. A
list of all deleted MRs is placed in the
comment section of the delta commentary and
preceded by a comment line stating that
they were deleted.
If -m is not used and the standard input is
a terminal, the prompt MRs? is issued on
the standard output before the standard
input is read; if the standard input is not
a terminal, no prompt is issued. The MRs?
prompt always precedes the comments? prompt
(see -y keyletter).
MRs in a list are separated by blanks
and/or tab characters. An unescaped new-
line character terminates the MR list.
Note that if the v flag has a value (see
admin(CP)), it is taken to be the name of a
program (or shell procedure) which
validates the correctness of the MR
numbers. If a non-zero exit status is
returned from the MR number validation
program, cdc terminates and the delta
commentary remains unchanged.
-y[comment] Arbitrary text used to replace the
comment(s) already existing for the delta
specified by the -r keyletter. The
previous comments are kept and preceded by
a comment line stating that they were
changed. A null comment has no effect.
If -y is not specified and the standard
input is a terminal, the prompt comments?
is issued on the standard output before the
standard input is read; if the standard
input is not a terminal, no prompt is
issued. An unescaped new-line character
terminates the comment text.
Simply stated, the rules are:
(C)
If you made the delta, you can change its delta
commentary.
or
(S)
If you own the file and directory, you can modify the
delta commentary.
Examples
cdc -r1.6 -m"bl78-12345 !bl77-54321 bl79-00001"
-ytrouble s.file
adds bl78-12345 and bl79-00001 to the MR list, removes
bl77-54321 from the MR list, and adds the comment trouble to
delta 1.6 of s.file.
cdc -r1.6 s.file
MRs? !bl77-54321 bl78-12345 bl79-00001
comments? trouble
does the same thing.
Files
x-file (see delta(CP))
z-file (see delta(CP))
See Also
admin(CP), delta(CP), get(CP), prs(CP), sccsfile(F).
Warnings
If SCCS file names are supplied to the cdc command via the
standard input (- on the command line), then the -m and -y
keyletters must also be used.
(printed 6/18/89)