Apparently revert-without-query has no effect in 21.5.8.
I load a file /tmp/foo into XEmacs, then add its filename to
revert-without-query via Customize, change the file's contents on the
disk and call M-x revert-buffer afterwards. Result: The buffer doesn't
change, i.e. it doesn't reflect the file's updated contents.
Reverting with revert-without-query set to nil works fine, but I get the
query in the modeline then, of course. (Which I don't want for e.g.
viewing logfiles, etc..)
This could have been introduced in an earlier version - I can't tell
exactly as I haven't built all recent beta versions. It worked ok in
21.5.5. This is on i686-pc-linux, in case that matters.
IBM Lab Boeblingen, Germany