.glimpse_(ex|in)clude syntax

[Harry Putnam <reader@newsguy.com>]

Attempting to use the old .glimpse_exclude and .glimpse_include
behavior I quickly found it doesn't work the same with wglimpse as compared
to command line glimpse.

Then I notice in the docs that .glimpse_filters has apparently replaced
that functionality.

Some details:

home of files being indexed:

   /home/reader/public_html/
   
   .glimpse_exclude:
   /
   
   .glimpse_include:
   \.cgi

The above setup, from command line glimpse, indexes only files *.cgi

Apparently wglimpse isn't designed to use include/exclude files but
uses the .glimpse_filters file to play both roles.

So, taking some textbook examples directly from the documentation
(Format of .wgfilter-index)I changed the .glimpse_filters to read like
so:

.glimpse_filters:
Allow \.cgi$
Deny  .*

This should work, according to docs, but does nothing whatever on my
setup.

Tried reversing the order with no change.
Trying to see if my syntax is wrong I tried just the deny part:

.glimpse_filters:
Deny .*

Still every last file is indexed.

In desperation I tried the old method with include/exclude and found
that it will work somewhat.  At least I got all files excluded with:

.glimpse_exclude
/home

Just "/" by itself did nothing.

However there is no built in way to pass the glimpse flag -i to the
command so no include happens.

So what is the proper syntax for .glimpse_filters, apparently the
syntax given in the docs doesn't actually work (for me).