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<title>#60142: [spec] IO.eof no longer exists? IO::Endable documentation? </title>
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<h1>#60142: [spec] IO.eof no longer exists? IO::Endable documentation? </h1>
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masak
<cmasak [at] gmail.com>
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<li><a class="showlink status-open" href="http://rt.perl.org/rt3/Ticket/Display.html?id=49171">
49171: (pmichaud) [META] High priority perl6 tickets [open]
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<a name="txn-488516" href="/rt3/Ticket/Display.html?id=60142#txn-488516">#</a>
</td>
<td class="date">Sun Oct 26 12:27:26 2008</td>
<td class="description">
masak - Ticket created
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<td align="right" class="message-header-key">Subject:</td>
<td class="message-header-value">A line-counting program in Rakudo reports one more line than wc</td>
</tr>
<tr>
<td align="right" class="message-header-key">Date:</td>
<td class="message-header-value">Sun, 26 Oct 2008 20:27:10 +0100</td>
</tr>
<tr>
<td align="right" class="message-header-key">To:</td>
<td class="message-header-value">rakudobug <!-- x --> at perl.org</td>
</tr>
<tr>
<td align="right" class="message-header-key">From:</td>
<td class="message-header-value">"Carl Mäsak" <cmasak <!-- x --> at gmail.com></td>
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[text/plain 227b]
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<div class="messagebody">
<div class="message-stanza-depth-0">
Rakudo r32151 contains a bug which makes it "read" a nonexistent blank<br />
line at the end of files.<br />
<br />
$ wc README | awk '{ print $1 }'<br />
102<br />
<br />
$ <README ./perl6 -e 'my $l = 0; while !$*IN.eof { $l++; my $dummy =<br />
<div class="message-stanza-depth-1">
=$*IN; }; say $l'<br />
</div>
103<br />
</div>
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<a name="txn-488522" href="/rt3/Ticket/Display.html?id=60142#txn-488522">#</a>
</td>
<td class="date">Sun Oct 26 12:31:57 2008</td>
<td class="description">
masak - Correspondence added
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<td align="right" class="message-header-key">Subject:</td>
<td class="message-header-value">Re: [perl #60142] AutoReply: A line-counting program in Rakudo reports one more line than wc</td>
</tr>
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<td align="right" class="message-header-key">Date:</td>
<td class="message-header-value">Sun, 26 Oct 2008 20:31:39 +0100</td>
</tr>
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<td align="right" class="message-header-key">To:</td>
<td class="message-header-value">perl6-bugs-followup <!-- x --> at perl.org</td>
</tr>
<tr>
<td align="right" class="message-header-key">From:</td>
<td class="message-header-value">"Carl Mäsak" <cmasak <!-- x --> at gmail.com></td>
</tr>
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[text/plain 184b]
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<div class="messagebody">
<div class="message-stanza-depth-0">
As a funny bonus, Parrot segfaults if the dummy assignment is left out<br />
inside the loop:<br />
<br />
$ <README ./perl6 -e 'my $l = 0; while !$*IN.eof { $l++; =$*IN; }; say $l'<br />
Segmentation fault<br />
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<a name="txn-505970" href="/rt3/Ticket/Display.html?id=60142#txn-505970">#</a>
</td>
<td class="date">Tue Dec 09 06:37:00 2008</td>
<td class="description">
jnthn <!-- x --> at jnthn.net - Comments added
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[text/plain 95b]
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<div class="messagebody">
<div class="message-stanza-depth-0">
Appears to be a bug in Parrot's .eof() method; sent a ticket on Parrot<br />
for looking into this.<br />
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<a name="txn-505972" href="/rt3/Ticket/Display.html?id=60142#txn-505972">#</a>
</td>
<td class="date">Tue Dec 09 06:37:01 2008</td>
<td class="description">
jnthn <!-- x --> at jnthn.net - Status changed from 'new' to 'open'
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<a name="txn-540592" href="/rt3/Ticket/Display.html?id=60142#txn-540592">#</a>
</td>
<td class="date">Fri Mar 13 03:53:07 2009</td>
<td class="description">
jnthn <!-- x --> at jnthn.net - Comments added
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[text/plain 151b]
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<div class="messagebody">
<div class="message-stanza-depth-0">
See also related ticket<br />
http://rt.perl.org/rt3/Ticket/Display.html?id=61224 - looks like we may<br />
have to do our own thing in Rakudo to make this work...<br />
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<a name="txn-551618" href="/rt3/Ticket/Display.html?id=60142#txn-551618">#</a>
</td>
<td class="date">Mon Apr 13 01:17:50 2009</td>
<td class="description">
masak - Dependency by ticket #49171 added
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<a name="txn-580858" href="/rt3/Ticket/Display.html?id=60142#txn-580858">#</a>
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<td class="date">Tue Jun 30 18:14:22 2009</td>
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pmichaud - Correspondence added
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<td class="message-header-value">perl6-compiler <!-- x --> at perl.org</td>
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On Sun Oct 26 12:27:26 2008, masak wrote:<br />
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> Rakudo r32151 contains a bug which makes it "read" a nonexistent blank<br />
> line at the end of files.<br />
> <br />
> $ wc README | awk '{ print $1 }'<br />
> 102<br />
> <br />
> $ <README ./perl6 -e 'my $l = 0; while !$*IN.eof { $l++; my $dummy =<br />
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> =$*IN; }; say $l'<br />
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> 103<br />
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<br />
IO.pod:1207 claims that "IO.eof" is gone, to be replaced with<br />
C<IO::Endable>. But I can't seem to find any specification or<br />
documentation on Endable.<br />
<br />
So, I'm converting this ticket to a specbug, in hopes that p6l or<br />
someone can sort it out.<br />
<br />
If it turns out that IO.eof still exists, then should it continue to<br />
have the Perl 5 behavior of performing a getc/ungetc to check EOF?<br />
<br />
Pm<br />
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<a name="txn-580864" href="/rt3/Ticket/Display.html?id=60142#txn-580864">#</a>
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<td class="date">Tue Jun 30 18:15:14 2009</td>
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pmichaud - Subject changed from 'A line-counting program in Rakudo reports one more line than wc' to '[spec] IO.eof no longer exists? IO::Endable documentation? '
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<a name="txn-593704" href="/rt3/Ticket/Display.html?id=60142#txn-593704">#</a>
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<td class="date">Mon Aug 03 21:44:30 2009</td>
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wayland - Comments added
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Changed the spec so it refers to IO::Seekable.eoi instead, since that<br />
seems to perform the same function. <br />
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