Integrate from mainperl.

p4raw-id: //depot/cfgperl@2886

4 files changed, 15 insertions, 5 deletions

diff --git a/pod/perldiag.pod b/pod/perldiag.pod
index eb84876d4e..c303c003a6 100644
--- a/pod/perldiag.pod
+++ b/pod/perldiag.pod
@@ -2323,6 +2323,11 @@ was either never opened or has since been closed.
 
 (F) This machine doesn't implement the select() system call.
 
+=item select() on unopened file
+
+(W) You tried to use the select() function on a filehandle that
+was either never opened or has since been closed.
+
 =item sem%s not implemented
 
 (F) You don't have System V semaphore IPC on your system.
diff --git a/pod/perlguts.pod b/pod/perlguts.pod
index 551e84c8df..0b9eed0a8f 100644
--- a/pod/perlguts.pod
+++ b/pod/perlguts.pod
@@ -263,9 +263,9 @@ return value.
 The C<av_clear> function deletes all the elements in the AV* array, but
 does not actually delete the array itself.  The C<av_undef> function will
 delete all the elements in the array plus the array itself.  The
-C<av_extend> function extends the array so that it contains C<key>
-elements.  If C<key> is less than the current length of the array, then
-nothing is done.
+C<av_extend> function extends the array so that it contains at least C<key+1>
+elements.  If C<key+1> is less than the currently allocated length of the array,
+then nothing is done.
 
 If you know the name of an array variable, you can get a pointer to its AV
 by using the following:
diff --git a/pod/perlre.pod b/pod/perlre.pod
index 451f527445..97ac7b7266 100644
--- a/pod/perlre.pod
+++ b/pod/perlre.pod
@@ -116,7 +116,11 @@ The following standard quantifiers are recognized:
 (If a curly bracket occurs in any other context, it is treated
 as a regular character.)  The "*" modifier is equivalent to C<{0,}>, the "+"
 modifier to C<{1,}>, and the "?" modifier to C<{0,1}>.  n and m are limited
-to integral values less than 65536.
+to integral values less than a preset limit defined when perl is built.
+This is usually 32766 on the most common platforms.  The actual limit can
+be seen in the error message generated by code such as this:
+
+	$_ **= $_ , / {$_} / for 2 .. 42;
 
 By default, a quantified subpattern is "greedy", that is, it will match as
 many times as possible (given a particular starting location) while still
diff --git a/pod/perlrun.pod b/pod/perlrun.pod
index 6ea5a1dbfb..8a572570cb 100644
--- a/pod/perlrun.pod
+++ b/pod/perlrun.pod
@@ -686,7 +686,8 @@ Command-line options (switches).  Switches in this variable are taken
 as if they were on every Perl command line.  Only the B<-[DIMUdmw]>
 switches are allowed.  When running taint checks (because the script
 was running setuid or setgid, or the B<-T> switch was used), this
-variable is ignored.
+variable is ignored.  If PERL5OPT begins with B<-T>, tainting will be
+enabled, and any subsequent options ignored.
 
 =item PERLLIB