gawk bug?

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2 total messages Started by Marty Thu, 10 Aug 1989 15:47

#353

Author: Marty
Date: Thu, 10 Aug 1989 15:47

37 lines
1143 bytes

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
ARPA:	leisner.henr@xerox.com
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Re: gawk bug?

#357

Author: Arnold D. Robbins {EUCC}
Date: Fri, 11 Aug 1989 16:39

10 lines
966 bytes

In article <890810-084721-6771@Xerox> Leisner.Henr@XEROX.COM (Marty) writes:
>RLENGTH -1 works differently than RLENGTH - 1.

This is a gawk bug; in the former case gawk thought it had a concatenation.
It should be fixed in 2.11.
-- 
Arnold Robbins -- Emory University Computing Center | Laundry increases
DOMAIN: arnold@unix.cc.emory.edu		    | exponentially in the
UUCP: gatech!emoryu1!arnold  PHONE: +1 404 727-7636 | number of children.
BITNET: arnold@emoryu1	     FAX:   +1 404 727-2599 |     -- Miriam Hartholz

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