The MySC utilities are not conformant to the The Open Group's Single UNIX Specification's definition the SCCS utilities. This document lists the differences between the implemenation of the MySC utilities and the specification. This is not a todo or bug list. The Single UNIX specification of the SCCS utilities is too vague for me to consider it a useful standard. This list is also incomplete.
The biggest area of non-conformance with MySC in the in how the utilities process arguments. In terms of command line options, all the MySC utilities support the "Utility Syntax Guidelines" with no exceptions. Unfortunately the Single UNIX specifications lists a number of exceptions to these guidelines, that is, options that take optional option-arguments for the SCCS utilities.
The val and sccs utilities are not
provided with the MySC utilities. The val command isn't
included because it has no clear purpose and has a very arcane
specification. Because the sccs utility is simply a
front end for the SCCS utilities it wasn't considered within the same
scope of the other SCCS utilities. For this reason and because
it should be easy make the original freely redistributable implementation
of the sccs utility work with the MySC utilities, a new
implementation wasn't created.
The admin command is missing support for the -fn, the null deltas flag, and -h, structure
checking. The -h option
isn't supported because it is not clear exactly what structure
checking should be done. The -fn option isn't
implemented because it would've been awkward to do so and
doesn't seem to be very crucial.
The delta command is also missing support for two options, -g, ignored deltas, -p, print differences. I'm not
sure what it means to ignore a previous delta when making a delta, and so
the -g option isn't implemented. The -p option isn't provided because it would've been awkward to implement
and is mostly superfluous.
A couple of options are missing from the get utility.
Neither of the options related to creating delta summaries, -l, -L, are supported including the obsolete
-lp form. These functions weren't implemented largely
because I don't see much of a purpose for them.
When delta command prompts the user for a comment or MR number the input
is terminated by any newline character instead of a unescaped
newline character as I have no idea what an escaped newline character
is. The report of the number of lines inserted, deleted and
unchanged by delta isn't provided. All the MySC
utilities will always print the name of all the files they
process even if they only process one file. The unget
command doesn't print anything to standard output.
MySC Single UNIX Specification Conformance / Ross Ridge / rridge@csclub.uwaterloo.ca