[inseparable changes from patch from perl5.003_27 to perl5.003_28]

 CORE LANGUAGE CHANGES

Subject: Don't let C<sub foo;> undefine &foo
From: Chip Salzenberg <chip@perl.com>
Files: op.c

Subject: Make code, doc agree on $ENV{PATH} and `cmd`
From: Chip Salzenberg <chip@perl.com>
Files: pod/perlsec.pod pp_sys.c

Subject: Optimize keys() and values() in void context
From: Chip Salzenberg <chip@perl.com>
Files: doop.c op.c

 CORE PORTABILITY

Subject: VMS patches post _27
Date: Thu, 20 Feb 1997 01:58:46 -0500 (EST)
From: Charles Bailey <bailey@HMIVAX.HUMGEN.UPENN.EDU>
Files: MANIFEST dosish.h hv.c lib/ExtUtils/MM_VMS.pm lib/ExtUtils/xsubpp perl.c perlsdio.h pod/perldelta.pod pod/perlvar.pod t/op/closure.t unixish.h vms/Makefile vms/descrip.mms vms/ext/filespec.t vms/genconfig.pl vms/vms.c vms/vmsish.h

    private-msgid: <01IFMEMPN1IU0057E2@hmivax.humgen.upenn.edu>

Subject: Re: OS/2 patch for _27
Date: Thu, 20 Feb 1997 19:24:16 -0500 (EST)
From: Ilya Zakharevich <ilya@math.ohio-state.edu>
Files: INSTALL README.os2 lib/Test/Harness.pm os2/Changes os2/OS2/PrfDB/t/os2_prfdb.t os2/os2.c os2/os2ish.h os2/perl2cmd.pl perl.c pod/perldelta.pod t/TEST t/harness t/op/magic.t
Msg-ID: <199702210024.TAA03174@monk.mps.ohio-state.edu>

    (applied based on p5p patch as commit 833d3f255ed68b969f062cec63d33f853ed9237c)

 DOCUMENTATION

Subject: INSTALL updates since _26
Date: Tue, 18 Feb 1997 16:00:08 -0500 (EST)
From: Andy Dougherty <doughera@fractal.phys.lafayette.edu>
Files: INSTALL
Msg-ID: <Pine.SOL.3.95q.970218155815.2014F-100000@fractal.lafayette.e

    (applied based on p5p patch as commit a8247d96fd6167a3b920e63aedee5592cd6e29a7)

Subject: Document "$$0" change
From: Chip Salzenberg <chip@perl.com>
Files: pod/perldelta.pod

Subject: Don't recommend impossible //o for C<$x =~ $y>
From: Chip Salzenberg <chip@perl.com>
Files: pod/perlop.pod

Subject: Correct doc that claimed that <FH> was never false
From: Chip Salzenberg <chip@perl.com>
Files: pod/perldelta.pod pod/perlop.pod

Subject: Document C<$?> vs. $SIG{CHLD}
From: Ulrich Pfeifer <pfeifer@charly.informatik.uni-dortmund.de>
Files: pod/perlvar.pod

Subject: Add pumpkin.pod
From: Chip Salzenberg <chip@perl.com>
Files: MANIFEST Porting/pumpkin.pod

Subject: Don't say "associat*ve arr*y"
From: Chip Salzenberg <chip@perl.com>
Files: MANIFEST gv.h hv.c lib/Env.pm lib/overload.pm opcode.pl pod/perl.pod pod/perldelta.pod pod/perldiag.pod pod/perlfunc.pod pod/perlguts.pod pod/perlmod.pod pod/perltie.pod pod/perltoc.pod pod/perltrap.pod x2p/a2p.pod

 OTHER CORE CHANGES

Subject: Fix a typo
From: Chip Salzenberg <chip@perl.com>
Files: pp_sys.c

Subject: Fix perl_call_sv(..., G_NOARGS)
From: Chip Salzenberg <chip@perl.com>
Files: perl.c

Subject: Fix SIGSEGV when cloning sub with complex expression
From: Chip Salzenberg <chip@perl.com>
Files: op.c

1 files changed, 11 insertions, 12 deletions

diff --git a/pod/perlop.pod b/pod/perlop.pod
index 55108f0328..88a8af0fd4 100644
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -167,9 +167,8 @@ supposed to be searched, substituted, or translated instead of the default
 $_.  The return value indicates the success of the operation.  (If the
 right argument is an expression rather than a search pattern,
 substitution, or translation, it is interpreted as a search pattern at run
-time.  This is less efficient than an explicit search, because the pattern
-must be compiled every time the expression is evaluated--unless you've
-used C</o>.)
+time.  This can be is less efficient than an explicit search, because the
+pattern must be compiled every time the expression is evaluated.
 
 Binary "!~" is just like "=~" except the return value is negated in
 the logical sense.
@@ -1001,15 +1000,15 @@ always undergo shell expansion as well, see L<perlsec> for
 security concerns.)
 
 Evaluating a filehandle in angle brackets yields the next line from
-that file (newline included, so it's never false until end of file, at
-which time an undefined value is returned).  Ordinarily you must assign
-that value to a variable, but there is one situation where an automatic
-assignment happens.  I<If and ONLY if> the input symbol is the only
-thing inside the conditional of a C<while> loop, the value is
-automatically assigned to the variable C<$_>.  The assigned value is
-then tested to see if it is defined.  (This may seem like an odd thing
-to you, but you'll use the construct in almost every Perl script you
-write.)  Anyway, the following lines are equivalent to each other:
+that file (newline, if any, included), or C<undef> at end of file.
+Ordinarily you must assign that value to a variable, but there is one
+situation where an automatic assignment happens.  I<If and ONLY if> the
+input symbol is the only thing inside the conditional of a C<while> or
+C<for(;;)> loop, the value is automatically assigned to the variable
+C<$_>.  The assigned value is then tested to see if it is defined.
+(This may seem like an odd thing to you, but you'll use the construct
+in almost every Perl script you write.)  Anyway, the following lines
+are equivalent to each other:
 
     while (defined($_ = <STDIN>)) { print; }
     while (<STDIN>) { print; }