[Sccs-devel] SCCS keyword expansion issue

[thinkunix <thi...@zo...>]

Hi,

I have been using Schily SCCS for a while and it has worked
great.  Recently I ran into an issue with ID keyword expansion.

I have a shell script which is setting a variable using the
date(1) format controls, like so:

....................cut here....................
:
# datestring.sh
#ident  %W%     %E% %U% %Q%
#

DATE=`date +%Y%m%d-%H%M%S`
echo "DATE = [$DATE]"
....................cut here....................

I check it into SCCS then check out a read-only copy which
will have the ID keywords expanded using the following sequence:

$ admin -idatestring.sh -y'initial version' s.datestring.sh
$ rm datestring.sh
$ get s.datestring.sh
1.1
7 lines


The problem is the multiple '%' chars in the date(1) command
are being expanded as though they were SCCS ID keywords.
Obviously, this breaks the shell script.

$ cat datestring.sh

....................cut here....................
:
# datestring.sh
#ident  @(#)datestring.sh       1.1     18/08/01 19:13:22
#

DATE=`date +m%d-08/01/18M%S`
echo "DATE = [$DATE]"
$ sh ./datestring.sh
DATE = [m01-08/01/18M35]
....................cut here....................


Historically date(1) lacked format strings, e.g. "+%Y%m%d",
so this was never an issue.

I tried "get -k" but that prevents expanding _ALL_ SCCS ID keywords,
and I do want them for revision identification.

I am running Slackware 14.2 on x86 with SCCS version:
admin schily-SCCS version 5.05 2011/10/01 (i686-pc-linux-gnu)

I also tried:
admin schily-SCCS version 5.08 2015/09/05 (i686-pc-linux-gnu)

with the same results.

Any suggestions on how to work around this?

I could call date(1) multiple times and build up the date string
but that seems wasteful.  Something like this:

YEAR=`date +%Y`
MONTH=`date +%m`
DAY=`date +%d`
...

TODAY="$YEAR$MONTH$DAY..."

thanks,
scot