| 1 | # From jose@monkey.org Thu Jun 5 11:48:35 2003
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| 28 | # for arnold@gnu.ai.mit.edu; Thu, 05 Jun 2003 00:14:28 -0400
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| 32 | # for arnold@gnu.ai.mit.edu; Thu, 05 Jun 2003 00:14:26 -0400
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| 33 | # Received: by naughty.monkey.org (Postfix, from userid 1203)
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| 37 | # id BF9821BA969; Thu, 5 Jun 2003 00:14:19 -0400 (EDT)
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| 38 | # Date: Thu, 5 Jun 2003 00:14:19 -0400 (EDT)
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| 39 | # From: Jose Nazario <jose@monkey.org>
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| 40 | # To: bug-gnu-utils@prep.ai.mit.edu, arnold@gnu.ai.mit.edu,
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| 41 | # netbsd-bugs@netbsd.org
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| 42 | # Subject: bug in gawk/gsub() (not present in nawk)
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| 43 | # Message-ID: <Pine.BSO.4.51.0306050007160.31577@naughty.monkey.org>
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| 44 | # MIME-Version: 1.0
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| 45 | # Content-Type: TEXT/PLAIN; charset=US-ASCII
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| 46 | # X-Spam-Status: No, hits=-1.2 required=5.0
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| 47 | # tests=SPAM_PHRASE_00_01,USER_AGENT_PINE
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| 48 | # version=2.41
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| 49 | # X-Spam-Level:
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| 50 | # X-SpamBouncer: 1.4 (10/07/01)
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| 51 | # X-SBClass: OK
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| 52 | # Status: R
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| 53 | #
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| 54 | # while playing with some tools in data massaging, i had to migrate from an
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| 55 | # openbsd/nawk system to a netbsd/gawk system. i found the folllowing
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| 56 | # behavior, which seems to be a bug.
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| 57 | #
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| 58 | # the following gsub() pattern has a strange effect under gawk which is not
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| 59 | # visible in nawk (at least as compiled on openbsd). the intention is to
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| 60 | # take a string like "This Is a Title: My Title?" and turn it into a
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| 61 | # normalized string: "ThisIsaTitleMyTitle". to do this, i wrote the
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| 62 | # following gross gsub line in an awk script:
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| 63 | #
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| 64 | # gsub(/[\ \"-\/\\:;\[\]\@\?\.\,\$]/, "", $2)
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| 65 | # print $2
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| 66 | #
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| 67 | # in gawk, as found in netbsd-macppc/1.5.2, this will drop the first letter
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| 68 | # of every word. the resulting string will be "hissitleyitle", while in nawk
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| 69 | # as built on openbsd-3.3 this will get it correct.
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| 70 | #
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| 71 | # any insights? the inconsistency with this relatively naive pattern seems a
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| 72 | # bit odd. (i would up installing nawk built from openbsd sources.)
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| 73 | #
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| 74 | # thanks. sorry i didn't send a better bug report, netbsd folks, i'm not
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| 75 | # much of a netbsd user, and i dont have send-pr set up. yes, this is a
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| 76 | # slightly older version of netbsd and gawk:
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| 77 | #
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| 78 | # $ uname -a
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| 79 | # NetBSD entropy 1.5.2 NetBSD 1.5.2 (GENERIC) #0: Sun Feb 10 02:00:04 EST
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| 80 | # 2002 jose@entropy:/usr/src/sys/arch/macppc/compile/GENERIC macppc
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| 81 | # $ awk --version
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| 82 | # GNU Awk 3.0.3
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| 83 | # Copyright (C) 1989, 1991-1997 Free Software Foundation.
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| 84 | #
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| 85 | #
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| 86 | #
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| 87 | # thanks.
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| 88 | #
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| 89 | # ___________________________
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| 90 | # jose nazario, ph.d. jose@monkey.org
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| 91 | # http://monkey.org/~jose/
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| 92 | #
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| 93 | #
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| 94 | {
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| 95 | gsub(/[\ \"-\/\\:;\[\]\@\?\.\,\$]/, "")
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| 96 | print
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| 97 | }
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