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Perl-Users Digest, Issue: 2663 Volume: 11

daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Tue Nov 3 06:09:40 2009

Date: Tue, 3 Nov 2009 03:09:07 -0800 (PST)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)

Perl-Users Digest           Tue, 3 Nov 2009     Volume: 11 Number: 2663

Today's topics:
        "un-meta" the control characters <mritty@gmail.com>
    Re: "un-meta" the control characters <uri@StemSystems.com>
    Re: "un-meta" the control characters sln@netherlands.com
    Re: "un-meta" the control characters (Randal L. Schwartz)
    Re: "un-meta" the control characters sln@netherlands.com
    Re: "un-meta" the control characters <someone@example.com>
    Re: "un-meta" the control characters <ben@morrow.me.uk>
    Re: FAQ 6.12 Can I use Perl regular expressions to matc <sysadmin@example.com>
    Re: FAQ 6.12 Can I use Perl regular expressions to matc <brian.d.foy@gmail.com>
    Re: FAQ 6.12 Can I use Perl regular expressions to matc <ben@morrow.me.uk>
    Re: FAQ 7.27 How can I comment out a large block of Per <sysadmin@example.com>
    Re: How to process duplicate entries in tab separated f <tadmc@seesig.invalid>
    Re: How to process duplicate entries in tab separated f <ben@morrow.me.uk>
        optimizar r/w en ficheros <leotrillo2@gmail.com>
        Posting Guidelines for comp.lang.perl.misc ($Revision:  tadmc@seesig.invalid
        Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)

----------------------------------------------------------------------

Date: Mon, 2 Nov 2009 11:07:56 -0800 (PST)
From: Paul Lalli <mritty@gmail.com>
Subject: "un-meta" the control characters
Message-Id: <ea4c56ee-c985-40d0-b32f-72c954a5b0cc@d34g2000vbm.googlegroups.com>

A coworker just presented me with this task.  I came up with two
solutions, but I don't like either of them.  He has a text document
and wants to scan it for characters such as newline, tab, form feed,
carriage return, vertical tab.  If found, he wants to replace them
with their typical representation (ie, \n, \t, \f, \r, \v).

I first gave him the obvious:
$string =~ s/\n/\\n/;
$string =~ s/\t/\\t/;
$string =~ s/\f/\\f/;
$string =~ s/\r/\\r/;
$string =~ s/\v/\\v/;

which I don't like because of how much copy/paste is involved.  Then I
came up with:

for (qw/n t f r v/) {
   my $meta = eval("\\$_");
   $string =~ s/$meta/\\$_/;
}

which I don't like, because the comment he'd have to put in the code
to explain it would be longer than the code itself, or the first
version.

So can anyone think of a better way?  Is there any kind of intrinsic
link between a newline character and the letter 'n' that could be used
to go "backwards" here?

Thanks,
Paul Lalli


------------------------------

Date: Mon, 02 Nov 2009 14:40:27 -0500
From: "Uri Guttman" <uri@StemSystems.com>
Subject: Re: "un-meta" the control characters
Message-Id: <877hu8ww9g.fsf@quad.sysarch.com>

>>>>> "PL" == Paul Lalli <mritty@gmail.com> writes:

  PL> A coworker just presented me with this task.  I came up with two
  PL> solutions, but I don't like either of them.  He has a text document
  PL> and wants to scan it for characters such as newline, tab, form feed,
  PL> carriage return, vertical tab.  If found, he wants to replace them
  PL> with their typical representation (ie, \n, \t, \f, \r, \v).

  PL> I first gave him the obvious:
  PL> $string =~ s/\n/\\n/;
  PL> $string =~ s/\t/\\t/;
  PL> $string =~ s/\f/\\f/;
  PL> $string =~ s/\r/\\r/;
  PL> $string =~ s/\v/\\v/;

  PL> which I don't like because of how much copy/paste is involved.  Then I
  PL> came up with:

use a hash table for the conversion:

my %controls = (
	"\n"	=> '\\n',
	"\t"	=> '\\t',
	"\r"	=> '\\r',
	"\f"	=> '\\f',
	"\v"	=> '\\v',
) ;

	$string =~ s/([\n\t\r\f\v])/$controls{$1}/g;

and if you want to get anal about dups of the chars do this:

my @controls = qw( n t r f v ) ;
my %control_to_escape = map { eval( "\\$_" ) => "\\$_" } @controls ;

my $controls_re = '[' . join( '', map "\\$_",  @controls ) . ']' ;

	$string =~ s/($controls_re)/$controls_to_escape{$1}/g;

see ma! only one use of the actual control letters!

uri

-- 
Uri Guttman  ------  uri@stemsystems.com  --------  http://www.sysarch.com --
-----  Perl Code Review , Architecture, Development, Training, Support ------
---------  Gourmet Hot Cocoa Mix  ----  http://bestfriendscocoa.com ---------


------------------------------

Date: Mon, 02 Nov 2009 12:21:06 -0800
From: sln@netherlands.com
Subject: Re: "un-meta" the control characters
Message-Id: <mnfue5hifvvb2iv840unmplqjrur4b57bk@4ax.com>

On Mon, 2 Nov 2009 11:07:56 -0800 (PST), Paul Lalli <mritty@gmail.com> wrote:

>A coworker just presented me with this task.  I came up with two
>solutions, but I don't like either of them.  He has a text document
>and wants to scan it for characters such as newline, tab, form feed,
>carriage return, vertical tab.  If found, he wants to replace them
>with their typical representation (ie, \n, \t, \f, \r, \v).
>
>I first gave him the obvious:
>$string =~ s/\n/\\n/;
>$string =~ s/\t/\\t/;
>$string =~ s/\f/\\f/;
>$string =~ s/\r/\\r/;
>$string =~ s/\v/\\v/;
>
>which I don't like because of how much copy/paste is involved.  Then I
>came up with:
>
>for (qw/n t f r v/) {
>   my $meta = eval("\\$_");
>   $string =~ s/$meta/\\$_/;
>}
>
>which I don't like, because the comment he'd have to put in the code
>to explain it would be longer than the code itself, or the first
>version.
>
>So can anyone think of a better way?  Is there any kind of intrinsic
>link between a newline character and the letter 'n' that could be used
>to go "backwards" here?
>

Yet another way..

use strict;
use warnings;

my %translation = (
  '\n'=>"\n",
  '\t'=>"\t",
  '\f'=>"\f",
  '\r'=>"\r",
  # ,'\v'=>"\v" - no 'v' for 'm'e, vt?
);

my $sample = "line 1\tsome\nline 2\t\t\f\n\rline 3\n";

while (my ($literal,$actual) = each %translation) {
	$sample =~ s/$actual/$literal/eg;
}

print $sample;

__END__

-sln


------------------------------

Date: Mon, 02 Nov 2009 12:11:54 -0800
From: merlyn@stonehenge.com (Randal L. Schwartz)
Subject: Re: "un-meta" the control characters
Message-Id: <863a4w7kl1.fsf@blue.stonehenge.com>

>>>>> "Uri" == Uri Guttman <uri@StemSystems.com> writes:

>>>>> "PL" == Paul Lalli <mritty@gmail.com> writes:
PL> A coworker just presented me with this task.  I came up with two
PL> solutions, but I don't like either of them.  He has a text document
PL> and wants to scan it for characters such as newline, tab, form feed,
PL> carriage return, vertical tab.  If found, he wants to replace them
PL> with their typical representation (ie, \n, \t, \f, \r, \v).

PL> I first gave him the obvious:
PL> $string =~ s/\n/\\n/;
PL> $string =~ s/\t/\\t/;
PL> $string =~ s/\f/\\f/;
PL> $string =~ s/\r/\\r/;
PL> $string =~ s/\v/\\v/;

PL> which I don't like because of how much copy/paste is involved.  Then I
PL> came up with:

Uri> use a hash table for the conversion:

Uri> my %controls = (
Uri> 	"\n"	=> '\\n',
Uri> 	"\t"	=> '\\t',
Uri> 	"\r"	=> '\\r',
Uri> 	"\f"	=> '\\f',
Uri> 	"\v"	=> '\\v',
Uri> ) ;

Just to scare people:

my %controls = (
  "\n" => '\n',
  "\t" => '\t',
  "\r" => '\r',
  "\f" => '\f',
  "\v" => '\v',
);

Ok, that's downright evil. :)

print "Just another Perl hacker,"; # the original

-- 
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<merlyn@stonehenge.com> <URL:http://www.stonehenge.com/merlyn/>
Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc.
See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion


------------------------------

Date: Mon, 02 Nov 2009 12:26:03 -0800
From: sln@netherlands.com
Subject: Re: "un-meta" the control characters
Message-Id: <01gue5tcaellrj80f2dfkosunqsbgrtejg@4ax.com>

On Mon, 02 Nov 2009 12:21:06 -0800, sln@netherlands.com wrote:

>On Mon, 2 Nov 2009 11:07:56 -0800 (PST), Paul Lalli <mritty@gmail.com> wrote:
>
>while (my ($literal,$actual) = each %translation) {
>	$sample =~ s/$actual/$literal/eg;
    $sample =~ s/$actual/$literal/g;
-sln


------------------------------

Date: Mon, 02 Nov 2009 12:54:26 -0800
From: "John W. Krahn" <someone@example.com>
Subject: Re: "un-meta" the control characters
Message-Id: <7GHHm.170$wq5.105@newsfe19.iad>

Paul Lalli wrote:
> A coworker just presented me with this task.  I came up with two
> solutions, but I don't like either of them.  He has a text document
> and wants to scan it for characters such as newline, tab, form feed,
> carriage return, vertical tab.  If found, he wants to replace them
> with their typical representation (ie, \n, \t, \f, \r, \v).
> 
> I first gave him the obvious:
> $string =~ s/\n/\\n/;
> $string =~ s/\t/\\t/;
> $string =~ s/\f/\\f/;
> $string =~ s/\r/\\r/;
> $string =~ s/\v/\\v/;

Perl doesn't have a "\v" character:

$string =~ s/\cK/\\v/;

Or:

$string =~ s/\13/\\v/;

Or:

$string =~ s/\xB/\\v/;




John
-- 
The programmer is fighting against the two most
destructive forces in the universe: entropy and
human stupidity.               -- Damian Conway


------------------------------

Date: Mon, 2 Nov 2009 22:52:55 +0000
From: Ben Morrow <ben@morrow.me.uk>
Subject: Re: "un-meta" the control characters
Message-Id: <7f44s6-8u2.ln1@osiris.mauzo.dyndns.org>


Quoth Paul Lalli <mritty@gmail.com>:
> A coworker just presented me with this task.  I came up with two
> solutions, but I don't like either of them.  He has a text document
> and wants to scan it for characters such as newline, tab, form feed,
> carriage return, vertical tab.  If found, he wants to replace them
> with their typical representation (ie, \n, \t, \f, \r, \v).
> 
> I first gave him the obvious:
> $string =~ s/\n/\\n/;
> $string =~ s/\t/\\t/;
> $string =~ s/\f/\\f/;
> $string =~ s/\r/\\r/;
> $string =~ s/\v/\\v/;
> 
> which I don't like because of how much copy/paste is involved.  Then I
> came up with:
> 
> for (qw/n t f r v/) {
>    my $meta = eval("\\$_");
>    $string =~ s/$meta/\\$_/;
> }
> 
> which I don't like, because the comment he'd have to put in the code
> to explain it would be longer than the code itself, or the first
> version.
> 
> So can anyone think of a better way?  Is there any kind of intrinsic
> link between a newline character and the letter 'n' that could be used
> to go "backwards" here?

There is no intrinsic link. The only way to determine that 'n' in the
letter for "\n" is using eval, and as you say anything using eval comes
out more complicated than a simple list of substitutions.

While Uri's solution (using a table of replacements) is nicely general,
in this case (with relatively few replacements, and no conflict between
the replaced and the replacing strings) I would just write

    for ($string) {
        s,\n,\\n,g;
        s,\t,\\t,g;
        s,\f,\\f,g;
        s,\r,\\r,g;
        s,\cK,\\v,g;
    }

(and curse, once again, the fact that I can't use 'given' in place of
'for' there).

Ben



------------------------------

Date: Mon, 02 Nov 2009 15:40:05 -0800
From: Wanna-Be Sys Admin <sysadmin@example.com>
Subject: Re: FAQ 6.12 Can I use Perl regular expressions to match balanced text?
Message-Id: <p5KHm.62$oo.23@newsfe20.iad>

sln@netherlands.com wrote:

> Let me write the Regex engine code, I can make it stand up
> and *whistle dixie*.

Go for it, it's open source. Contribute if you want (can).
-- 
Not really a wanna-be, but I don't know everything.


------------------------------

Date: Tue, 03 Nov 2009 01:33:49 -0600
From: brian d foy <brian.d.foy@gmail.com>
Subject: Re: FAQ 6.12 Can I use Perl regular expressions to match balanced text?
Message-Id: <031120090133491612%brian.d.foy@gmail.com>

In article <jm3se59m1ujq9ai3jps5ddedmhk5s1o753@4ax.com>,
<sln@netherlands.com> wrote:

> On Sun, 01 Nov 2009 15:15:15 -0600, brian d foy <brian.d.foy@gmail.com> wrote:

> Maybe you should try and run all the code instead of just a code
> segment.

I still don't get the error you do, but I'm also not running on
Windows. If you think you've found a bug, report it with perlbug.


------------------------------

Date: Tue, 3 Nov 2009 07:58:09 +0000
From: Ben Morrow <ben@morrow.me.uk>
Subject: Re: FAQ 6.12 Can I use Perl regular expressions to match balanced text?
Message-Id: <hd45s6-1j7.ln1@osiris.mauzo.dyndns.org>


Quoth sln@netherlands.com:
> On Sun, 01 Nov 2009 15:15:15 -0600, brian d foy <brian.d.foy@gmail.com> wrote:
> 
> >I don't get a crash, just an error which is entirely appriopriate:
> >
> >Reference to nonexistent group in regex; marked by <-- HERE in m/(?:
> >      [^<>]*+     # one or more non angle brackets, non backtracking
> >        |
> >      (?1) <-- HERE         # found < or >, so recurse to capture
> >buffer 1
> >  )*/ at test.pl line 12.
> 
> Maybe you should try and run all the code instead of just a code
> segment.
> 
> Try running this:
<snip>
> 
> my @enter;  # position queue of each nested level of bracket
> 
> my $regex = qr/
> 
>   (
>      <    # open angle bracket
>          (?{ push @enter,pos();

Using lexicals in (?{}) assertions is known to sometimes cause crashes
and other weird behaviour (this is indeed a bug, but a known one that is
difficult to fix: those assertions are documented as experimental for a
reason, despite being in widespread use). Do you still see the crash if
you remove the code assertions? If you replace the 'my $enter' with 'our
$enter'?

Ben



------------------------------

Date: Mon, 02 Nov 2009 12:29:32 -0800
From: Wanna-Be Sys Admin <sysadmin@example.com>
Subject: Re: FAQ 7.27 How can I comment out a large block of Perl code?
Message-Id: <MiHHm.27$xt7.1@newsfe18.iad>

ccc31807 wrote:

> 
> For example, in vi, to comment lines 231 through 317, do
> :231,317 s/^/#/
> which will replace the beginning of the line with #.
> 
> To remove the comments from lines 245 through 277, do
> :245,277 s/#//
> which will replace # with nothing (therefore removing it).

You probably want to use s/^#// in the _removal_ of the comments, if you
use that solution.
-- 
Not really a wanna-be, but I don't know everything.


------------------------------

Date: Mon, 02 Nov 2009 11:44:39 -0600
From: Tad McClellan <tadmc@seesig.invalid>
Subject: Re: How to process duplicate entries in tab separated file?
Message-Id: <slrnheu6hj.5h0.tadmc@tadbox.sbcglobal.net>

James Egan <jegan473@comcast.net> wrote:

[snip]
> use strict;
[snip]
> use vars qw(
>   @file


"use vars" is an anachronism. You should avoid its use with modern perls.

    perldoc vars

       ... the functionality provided
       by this pragma has been superseded by "our" declarations


But you do not appear to actually need package (global) variables, so
you should be using lexical variables instead:

    my( @file ...


-- 
Tad McClellan
email: perl -le "print scalar reverse qq/moc.noitatibaher\100cmdat/"


------------------------------

Date: Mon, 2 Nov 2009 22:43:47 +0000
From: Ben Morrow <ben@morrow.me.uk>
Subject: Re: How to process duplicate entries in tab separated file?
Message-Id: <3u34s6-8u2.ln1@osiris.mauzo.dyndns.org>


Quoth Tad McClellan <tadmc@seesig.invalid>:
> James Egan <jegan473@comcast.net> wrote:
> 
> [snip]
> > use strict;
> [snip]
> > use vars qw(
> >   @file
> 
> 
> "use vars" is an anachronism. You should avoid its use with modern perls.
> 
>     perldoc vars
> 
>        ... the functionality provided
>        by this pragma has been superseded by "our" declarations

It is worth being aware that the two are subtly different. This will
pass strict checks:

    package A;
    our $x;

    package B;
    print $x;

whereas this will not:

    package A;
    use vars qw/$x/;

    package B;
    print $x;

and in the first case the variable printed is $A::x rather than $B::x.

Ben



------------------------------

Date: Mon, 2 Nov 2009 14:30:43 -0800 (PST)
From: Leo <leotrillo2@gmail.com>
Subject: optimizar r/w en ficheros
Message-Id: <1fd0a592-bb8c-4605-95da-a8d2b2889209@l13g2000yqb.googlegroups.com>

Hola, estoy usando el open - identificador para abrir fichero escribir
y cerrar, pero esto en perl es bastante lento si se compara con C++.

He leido que hay algunos parametros de perlio que se pueden modificar
para acelerar los r/w, sabeis algo acerca de esto?

Muchas gracias.


------------------------------

Date: Tue, 03 Nov 2009 02:11:31 -0600
From: tadmc@seesig.invalid
Subject: Posting Guidelines for comp.lang.perl.misc ($Revision: 1.9 $)
Message-Id: <lsOdnaT_I-QueHLXnZ2dnUVZ_uKdnZ2d@giganews.com>

Outline
   Before posting to comp.lang.perl.misc
      Must
       - Check the Perl Frequently Asked Questions (FAQ)
       - Check the other standard Perl docs (*.pod)
      Really Really Should
       - Lurk for a while before posting
       - Search a Usenet archive
      If You Like
       - Check Other Resources
   Posting to comp.lang.perl.misc
      Is there a better place to ask your question?
       - Question should be about Perl, not about the application area
      How to participate (post) in the clpmisc community
       - Carefully choose the contents of your Subject header
       - Use an effective followup style
       - Speak Perl rather than English, when possible
       - Ask perl to help you
       - Do not re-type Perl code
       - Provide enough information
       - Do not provide too much information
       - Do not post binaries, HTML, or MIME
      Social faux pas to avoid
       - Asking a Frequently Asked Question
       - Asking a question easily answered by a cursory doc search
       - Asking for emailed answers
       - Beware of saying "doesn't work"
       - Sending a "stealth" Cc copy
      Be extra cautious when you get upset
       - Count to ten before composing a followup when you are upset
       - Count to ten after composing and before posting when you are upset
-----------------------------------------------------------------

Posting Guidelines for comp.lang.perl.misc ($Revision: 1.9 $)
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        Operating System related), so off-topic postings will happen from
        time to time. Be gracious when someone helps you find a better place
        to ask your question by pointing you to a more applicable newsgroup.

  How to participate (post) in the clpmisc community
    Carefully choose the contents of your Subject header
        You have 40 precious characters of Subject to win out and be one of
        the posts that gets read. Don't waste them. Take care while
        composing them, they are the key that opens the door to getting an
        answer.

        Spend them indicating what aspect of Perl others will find if they
        should decide to read your article.

        Do not spend them indicating "experience level" (guru, newbie...).

        Do not spend them pleading (please read, urgent, help!...).

        Do not spend them on non-Subjects (Perl question, one-word
        Subject...)

        For more information on choosing a Subject see "Choosing Good
        Subject Lines":

         http://www.cpan.org/authors/id/D/DM/DMR/subjects.post

        Part of the beauty of newsgroup dynamics, is that you can contribute
        to the community with your very first post! If your choice of
        Subject leads a fellow Perler to find the thread you are starting,
        then even asking a question helps us all.

    Use an effective followup style
        When composing a followup, quote only enough text to establish the
        context for the comments that you will add. Always indicate who
        wrote the quoted material. Never quote an entire article. Never
        quote a .signature (unless that is what you are commenting on).

        Intersperse your comments *following* each section of quoted text to
        which they relate. Unappreciated followup styles are referred to as
        "top-posting", "Jeopardy" (because the answer comes before the
        question), or "TOFU" (Text Over, Fullquote Under).

        Reversing the chronology of the dialog makes it much harder to
        understand (some folks won't even read it if written in that style).
        For more information on quoting style, see:

         http://web.presby.edu/~nnqadmin/nnq/nquote.html

    Speak Perl rather than English, when possible
        Perl is much more precise than natural language. Saying it in Perl
        instead will avoid misunderstanding your question or problem.

        Do not say: I have variable with "foo\tbar" in it.

        Instead say: I have $var = "foo\tbar", or I have $var = 'foo\tbar',
        or I have $var = <DATA> (and show the data line).

    Ask perl to help you
        You can ask perl itself to help you find common programming mistakes
        by doing two things: enable warnings (perldoc warnings) and enable
        "strict"ures (perldoc strict).

        You should not bother the hundreds/thousands of readers of the
        newsgroup without first seeing if a machine can help you find your
        problem. It is demeaning to be asked to do the work of a machine. It
        will annoy the readers of your article.

        You can look up any of the messages that perl might issue to find
        out what the message means and how to resolve the potential mistake
        (perldoc perldiag). If you would like perl to look them up for you,
        you can put "use diagnostics;" near the top of your program.

    Do not re-type Perl code
        Use copy/paste or your editor's "import" function rather than
        attempting to type in your code. If you make a typo you will get
        followups about your typos instead of about the question you are
        trying to get answered.

    Provide enough information
        If you do the things in this item, you will have an Extremely Good
        chance of getting people to try and help you with your problem!
        These features are a really big bonus toward your question winning
        out over all of the other posts that you are competing with.

        First make a short (less than 20-30 lines) and *complete* program
        that illustrates the problem you are having. People should be able
        to run your program by copy/pasting the code from your article. (You
        will find that doing this step very often reveals your problem
        directly. Leading to an answer much more quickly and reliably than
        posting to Usenet.)

        Describe *precisely* the input to your program. Also provide example
        input data for your program. If you need to show file input, use the
        __DATA__ token (perldata.pod) to provide the file contents inside of
        your Perl program.

        Show the output (including the verbatim text of any messages) of
        your program.

        Describe how you want the output to be different from what you are
        getting.

        If you have no idea at all of how to code up your situation, be sure
        to at least describe the 2 things that you *do* know: input and
        desired output.

    Do not provide too much information
        Do not just post your entire program for debugging. Most especially
        do not post someone *else's* entire program.

    Do not post binaries, HTML, or MIME
        clpmisc is a text only newsgroup. If you have images or binaries
        that explain your question, put them in a publically accessible
        place (like a Web server) and provide a pointer to that location. If
        you include code, cut and paste it directly in the message body.
        Don't attach anything to the message. Don't post vcards or HTML.
        Many people (and even some Usenet servers) will automatically filter
        out such messages. Many people will not be able to easily read your
        post. Plain text is something everyone can read.

  Social faux pas to avoid
    The first two below are symptoms of lots of FAQ asking here in clpmisc.
    It happens so often that folks will assume that it is happening yet
    again. If you have looked but not found, or found but didn't understand
    the docs, say so in your article.

    Asking a Frequently Asked Question
        It should be understood that you may have missed the applicable FAQ
        when you checked, which is not a big deal. But if the Frequently
        Asked Question is worded similar to your question, folks will assume
        that you did not look at all. Don't become indignant at pointers to
        the FAQ, particularly if it solves your problem.

    Asking a question easily answered by a cursory doc search
        If folks think you have not even tried the obvious step of reading
        the docs applicable to your problem, they are likely to become
        annoyed.

        If you are flamed for not checking when you *did* check, then just
        shrug it off (and take the answer that you got).

    Asking for emailed answers
        Emailed answers benefit one person. Posted answers benefit the
        entire community. If folks can take the time to answer your
        question, then you can take the time to go get the answer in the
        same place where you asked the question.

        It is OK to ask for a *copy* of the answer to be emailed, but many
        will ignore such requests anyway. If you munge your address, you
        should never expect (or ask) to get email in response to a Usenet
        post.

        Ask the question here, get the answer here (maybe).

    Beware of saying "doesn't work"
        This is a "red flag" phrase. If you find yourself writing that,
        pause and see if you can't describe what is not working without
        saying "doesn't work". That is, describe how it is not what you
        want.

    Sending a "stealth" Cc copy
        A "stealth Cc" is when you both email and post a reply without
        indicating *in the body* that you are doing so.

  Be extra cautious when you get upset
    Count to ten before composing a followup when you are upset
        This is recommended in all Usenet newsgroups. Here in clpmisc, most
        flaming sub-threads are not about any feature of Perl at all! They
        are most often for what was seen as a breach of netiquette. If you
        have lurked for a bit, then you will know what is expected and won't
        make such posts in the first place.

        But if you get upset, wait a while before writing your followup. I
        recommend waiting at least 30 minutes.

    Count to ten after composing and before posting when you are upset
        After you have written your followup, wait *another* 30 minutes
        before committing yourself by posting it. You cannot take it back
        once it has been said.

AUTHOR
    Tad McClellan and many others on the comp.lang.perl.misc newsgroup.

-- 
Tad McClellan
email: perl -le "print scalar reverse qq/moc.noitatibaher\100cmdat/"


------------------------------

Date: 6 Apr 2001 21:33:47 GMT (Last modified)
From: Perl-Users-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin) 
Subject: Digest Administrivia (Last modified: 6 Apr 01)
Message-Id: <null>


Administrivia:

To submit articles to comp.lang.perl.announce, send your article to
clpa@perl.com.

Back issues are available via anonymous ftp from
ftp://cil-www.oce.orst.edu/pub/perl/old-digests. 

#For other requests pertaining to the digest, send mail to
#perl-users-request@ruby.oce.orst.edu. Do not waste your time or mine
#sending perl questions to the -request address, I don't have time to
#answer them even if I did know the answer.


------------------------------
End of Perl-Users Digest V11 Issue 2663
***************************************


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