--- texmf-dist/texdoc/texdoc.cnf
+++ texmf-dist/texdoc/texdoc.cnf	2010-11-12 11:46:52.320054617 +0000
@@ -61,8 +61,11 @@
 # For each "ext" in zipext_list, you must define a "unzip_ext" unzipper.
 # The unzipped data must be printed on stdout. Example:
 #
-# zipext_list = gz
-# unzip_gz    = gzip -d -c
+zipext_list = gz, bz2, xz, lzma
+unzip_gz = gzip -d -c
+unzip_bz2 = bzip2 -d -c
+unzip_xz = xz -d -c
+unzip_lzma = lzma -d -c
 
 ## User interaction