On Apr 20, 2011, at 5:03 PM, Dr. Martin P.J. Zinser wrote: > Hello, > > sorry to be a pain, but here is another case of the spurious linebreak. > Environment is OpenVMS IA64 8.3-1H1, Perl 5.12.3 with useperlio defined.
Since perlio is the default, do you mean that you disabled it? > > I am using Perl with the CGI module to dynamically create a medium sized > table (a few hundered rows and 6 columns). The script works fine on > Perl 5.8.8 on OpenVMS Alpha. > > When accessing the script via a webserver, spurious linebreaks are inserted > into the table, causing garbled output (e.g. a <td ends up as <t\nd, which > also > a forgiving parser will not process correctly). Running the same script in > debug mode and sending the output to a file does <<not>> show the spurious > linebreaks. > > Shorter tables generated by the same script work fine also with 5.12.3 . > > I've already changed the script to write the table one row at the time to the > CGI output, but that this not resolve the issue. > > Any ideas and/or hope that this will be resolved with the soon to be released > 5.14? 5.14 is in deep code freeze at the moment, so if it's a unique problem that hasn't been reported before, no, it won't be fixed in that version. If you are writing lines longer than 4K to record-oriented files, you'll still get linebreaks at 4K intervals in 5.12.3, but 32K intervals in 5.14.0 (you can get the same effect in 5.12.3. by s/4096/32768/ in perlio.c). I can't really analyze the current problem without more information. Does the problem happen on read or write? What does SHOW DEVICE/FULL on your "webserver" give you? In other words, is it a mailbox or a socket or a global section or what that Perl is writing to? And are you sure that the linebreaks aren't already there when reading the data in (using what, DBD::Rdb?). How big are the I/O operations? Etc. ________________________________________ Craig A. Berry mailto:craigbe...@mac.com "... getting out of a sonnet is much more difficult than getting in." Brad Leithauser
