Doc tweaks.

[p5sagit/p5-mst-13.2.git] / pod / perlfunc.pod

diff --git a/pod/perlfunc.pod b/pod/perlfunc.pod
index 850c887..bfb91bb 100644 (file)
--- a/pod/perlfunc.pod
+++ b/pod/perlfunc.pod
@@ -457,7 +457,7 @@ name of the filehandle.
 DISCIPLINE can be either of C<:raw> for binary mode or C<:crlf> for
 "text" mode.  If the DISCIPLINE is omitted, it defaults to C<:raw>.
 Returns true on success, C<undef> on failure.  To mark FILEHANDLE as
-UTF-8, use C<:utf8>, and to mark the as bytes, use C<:bytes>.
+UTF-8, use C<:utf8>, and to mark it as bytes, use C<:bytes>.
 
 The C<:raw> are C<:clrf>, and any other directives of the form
 C<:...>, are called I/O I<disciplines>.  The C<open> pragma can be
@@ -554,11 +554,13 @@ C<$is_require> are set: C<$is_require> is true if the frame is created by a
 C<require> or C<use> statement, $evaltext contains the text of the
 C<eval EXPR> statement.  In particular, for an C<eval BLOCK> statement,
 $filename is C<(eval)>, but $evaltext is undefined.  (Note also that
-each C<use> statement creates a C<require> frame inside an C<eval EXPR>)
-frame.  C<$hasargs> is true if a new instance of C<@_> was set up for the
-frame.  C<$hints> and C<$bitmask> contain pragmatic hints that the caller
-was compiled with.  The C<$hints> and C<$bitmask> values are subject to
-change between versions of Perl, and are not meant for external use.
+each C<use> statement creates a C<require> frame inside an C<eval EXPR>
+frame.)  $subroutine may also be C<(unknown)> if this particular
+subroutine happens to have been deleted from the symbol table.
+C<$hasargs> is true if a new instance of C<@_> was set up for the frame.
+C<$hints> and C<$bitmask> contain pragmatic hints that the caller was
+compiled with.  The C<$hints> and C<$bitmask> values are subject to change
+between versions of Perl, and are not meant for external use.
 
 Furthermore, when called from within the DB package, caller returns more
 detailed information: it sets the list variable C<@DB::args> to be the
@@ -4602,12 +4604,6 @@ Examples:
     use sort '_mergesort';  # note discouraging _
     @new = sort { substr($a, 3, 5) cmp substr($b, 3, 5) } @old;
 
-    # Similar to the previous example, but demand stability as well
-    # Because of the way quicksort is "stabilized", this combination
-    # is not threadsafe
-    use sort qw( _quicksort stable );
-    @new = sort { substr($a, 3, 5) cmp substr($b, 3, 5) } @old;
-
 If you're using strict, you I<must not> declare $a
 and $b as lexicals.  They are package globals.  That means
 if you're in the C<main> package and type
@@ -5644,6 +5640,9 @@ specified length.  Produces a fatal error if truncate isn't implemented
 on your system.  Returns true if successful, the undefined value
 otherwise.
 
+The behavior is undefined if LENGTH is greater than the length of the
+file.
+
 =item uc EXPR
 
 =item uc