cvs-1.10, 1.11: cvs [export aborted]: tag `1.1' must be a symboli c tag

[Seelbach, Wolfgang]

Hi!

It is not possible to export using a revision tag, for example:

cvs export  -r 1.1  test4711/ActBar.cc  ==> cvs [export aborted]: tag `1.1'
must be a symbolic tag
cvs checkout  -r 1.1  test4711/ActBar.cc        ==> NO ERROR

The tag '1.1' is rejected by checkout.c, line 235 (cvs-1.11.1p1):

    if (m_type == EXPORT)
    {
        if (!tag && !date)
            error (1, 0, "must specify a tag or date");

        if (tag && isdigit ((unsigned char) tag[0]))
            error (1, 0, "tag `%s' must be a symbolic tag", tag);
    }

Is this a bug? 
If not: 
  - What's the reason for this test (tag && isdigit ...)?
  - Would the "deactivation" of this test in checkout.c bring up any
problems?

Regards,

  Wolfgang Seelbach
    mailto:wolfgang.seelbach@proalpha.de

See also:
=======
A.10.1 export options
These standard options are supported by export (see section A.5 Common
command options <cvs_16.html>, 
for a complete description of them):
-D date 
        Use the most recent revision no later than date. 
-f 
        If no matching revision is found, retrieve the most recent revision
(instead of ignoring the file). 
-l 
        Local; run only in current working directory. 
-n 
        Do not run any checkout program. 
-R 
        Export directories recursively. This is on by default. 
-r tag 
        Use revision tag. 

In addition, these options (that are common to checkout and export) are also
supported:
...