🚀 go-pugleaf

I seem to have tripped over something.  I have nothing to compare to (this
won't run on old awk) and I haven't found anything in the documentation to
cover this case.

RLENGTH -1 works differently than RLENGTH - 1.

Example:  
{
	match($0, "this is a bug")

	pattern = substr($0, RSTART, RLENGTH )
	bad	= substr($0, RSTART+1,  RLENGTH -1)
	good    = substr($0, RSTART+1,  RLENGTH - 1)
	print "found pattern " pattern
	print "bad = " bad
	print "good = " good
}

Input='this is a bug, trying out awk'

Output:
gawk -f bug.awk bug.tst
found pattern this is a bug
bad = his is a bug,
good = his is a bug

Problem:  the comma at the end of bad shouldn't (??) be there.

What's the story on this?


marty
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