[bug-grep] doc bug in grep; PATTERN implies a regexp used in --include or --exclude

[Jack Eidsness]

Hi -

I was kind of thrown off and confused when trying to do a recursive (-R) 
grep search recently, and did some looking around to find out why.  When 
reading the man page or "usage" output of grep (although the HTML doc on 
gnu.org seems closer to accurate although still somewhat inscrutable on 
this point), it says this:

  --include=PATTERN
  --exclude=PATTERN

In the other parts of the documentation, PATTERN refers to a regexp, but 
in this situation, the PATTERN in question is passed on to the system's 
fnmatch function.  I looked through the viewcvs on savanna.gnu.org to 
find this.

Could the documentation be updated to indicate that these two arguments 
are not regexps?  I think it would be appropriate to just say that the 
pattern is not used as a regexp, and is used by the system's fnmatch 
function.

On the online HTML docs, it at least says "file_pattern", but I dont 
think most people will know that that means it will be treated 
differently.  I am referring to these:
http://www.gnu.org/software/grep/doc/grep_3.html#SEC3

Thanks very much for your work on this fabulous software!

-Jack Eidsness