Description of problem:

  "less foo.txt.gz" or "less foo.txt.bz2" will show you the actual
  decompressed content. "less foo.txt.lzma" will not.

Version-Release number of selected component (if applicable):

  less-424-1.fc10
  less-424-2.fc11

How reproducible:

  100%

Steps to Reproduce:
1. echo moo > foo.txt
2. lzma foo.txt
3. less foo.txt.lzma
  
Actual results:

  binary garbage

Expected results:

  moo

Additional info:

  Patch to follow in a few minutes.