Suspect bug in Windows cmd line client - multiple prompt

Hi,

I found what I believe is a bug in the Windows version of the subversion
command line client (svn.exe) version 0.22.2 from the binary installer:

When being prompted whether to trust an unknown certificate issuer for more
than one time, it's not possible to input anything at the 2nd prompt (first
prompt works as expected).

I checked out "subversion" itself through https:// as explained in the FAQ -
but I didn't yet manage to install the certificate (is there docs how to do
this actually - I couldn't find anything helpful - would appreciate a tip for
that).

Here is what I type into the command prompt of my Windows 2000 box:
(the current working dir is the root of the checked out sources)

E:\Projects\svndev>svn update
Error validating server certificate: Unknown certificate issuer. Accept?
(y/N):
y
Error validating server certificate: Unknown certificate issuer. Accept?
(y/N):
svn: RA layer request failed
svn: GET of /repos/svn/!svn/ver/5939/trunk/build.conf: Certificate
verification
failed (https://svn.collab.net)

I peeked into the source code and _believe_ it's caused by the following
code in
subversion/clients/cmdline/prompt.c - Funktion svn_cl__prompt_user

      while (1)
        {
          status = apr_file_getc (&c, fp);
          if (status && ! APR_STATUS_IS_EOF(status))
            return svn_error_create (status, NULL, "error reading stdin.");
          if ((c == '\n') || (c == '\r'))
            break;
          
          svn_stringbuf_appendbytes (strbuf, &c, 1);
        }

It breaks out of the loop on a \n or \r - but Windows uses \r\n as
end-of-line so there
could be an \n left from the first prompt.

Unfortunately, I've not yet set up a build environment to verify this.

In case of any questions feel free ask! I'm happy to assist.

(by mail, I'm not (yet) subsribed to the mailing list)

best regards

Werner

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