Fill passes sigil but not idpf epub validation

[GoogleCodeExporter]

Please read http://code.google.com/p/sigil/wiki/ReportingIssues for
information about submitting a good bug report.

What steps will reproduce the problem?
1. opening and epub file in sigil
2.selecting the validate tick and getting the 'no problems' message
3. checking the file on http://validator.idpf.org/ and getting error messages 
about filenames containing spaces.
...

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system? 0.5.1 mac 
os x 10.6.8

Please provide any additional information below. If your source file
(SGF/EPUB/HTML/etc) is required to fully understand the problem, please
attach it to this issue. Read the ReportingIssues wiki page before
submitting!

I've attached a sample source file but have this problem with all my files. It 
seems that sigil doesn't reocgnise spaces in file names as being a problem but 
the idpf validator does.

Original issue reported on code.google.com by leila.ac...@gmail.com on 9 Feb 2012 at 2:05

Attachments:

• [coming of age.epub](https://storage.googleapis.com/google-code-attachments/sigil/issue-1252/comment-0/coming of age.epub)

[GoogleCodeExporter]

A space is a perfectly acceptable character. See section 3.3 of the OCF spec. 
Space is not listed as an illegal character. Also, section 2.3.1 even uses 
spaces in the file name in the example layout.

Original comment by john@nachtimwald.com on 30 Apr 2012 at 12:12

• Changed state: Invalid