If html name ends with 3 periods, calibre will crash on conversion

[cristi1979]

I'm doing html to epub conversion with calibre. If the name of the html file ends with 3 periods (ex: coco....html), calibre will crash during the conversion with the following message:

Creating EPUB Output...
67% Creating EPUB Output
        Looking for large trees in Brian%20W.%20Aldiss%20--%20Noaptea%20in%20care__html...
        No large trees found
        Split into 2 parts
Traceback (most recent call last):
  File "site.py", line 58, in main
  File "site-packages/calibre/ebooks/conversion/cli.py", line 283, in main
  File "site-packages/calibre/ebooks/conversion/plumber.py", line 1042, in run
  File "site-packages/calibre/ebooks/epub/output.py", line 169, in convert
  File "site-packages/calibre/ebooks/oeb/transforms/split.py", line 57, in __call__
  File "site-packages/calibre/ebooks/oeb/transforms/split.py", line 67, in split_item
  File "site-packages/calibre/ebooks/oeb/transforms/split.py", line 216, in __init__
  File "site-packages/calibre/ebooks/oeb/transforms/split.py", line 485, in commit
TypeError: not enough arguments for format string

If the name ends with only 2 periods or the periods are anywhere else in the name, the conversion is finishing correctly.

[Kovid Goyal (kovid)]

Attach a file demonstrating/reproducing the problem. If the file you are attaching is copyrighted, mark the bug as private. You can do this by clicking the tiny yellow icon next to "This bug is public" in the top right area of the bug's page.

 status incomplete

[cristi1979 (cristi-falcas)]

It looks that the content matters also: this is the minimum that crashes calibre. Any other character removed and it is ok.
The name needs a period and a space also.

[cristi1979 (cristi-falcas)]

I forgot to mention that I use linux.

[Kovid Goyal (kovid)]

Fixed in branch lp:calibre. The fix will be in the next release. calibre is usually released every Friday.

 status fixreleased