Integrate with Sarathy.

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

diff --git a/pod/perlop.pod b/pod/perlop.pod
index ce6fb66..c1ac387 100644 (file)
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -1225,6 +1225,12 @@ SEARCHLIST is delimited by bracketing quotes, the REPLACEMENTLIST has
 its own pair of quotes, which may or may not be bracketing quotes,
 e.g., C<tr[A-Z][a-z]> or C<tr(+\-*/)/ABCD/>.
 
+Note that C<tr> does B<not> do regular expression character classes
+such as C<\d> or C<[:lower:]>.  The <tr> operator is not equivalent to
+the tr(1) utility.  If you want to map strings between lower/upper
+cases, see L<perlfunc/lc> and L<perlfunc/uc>, and in general consider
+using the C<s> operator if you need regular expressions.
+
 Note also that the whole range idea is rather unportable between
 character sets--and even within character sets they may cause results
 you probably didn't expect.  A sound principle is to use only ranges
@@ -1412,7 +1418,7 @@ as C<"\\\t"> (since TAB is not alphanumeric).  Note also that:
 may be closer to the conjectural I<intention> of the writer of C<"\Q\t\E">.
 
 Interpolated scalars and arrays are converted internally to the C<join> and
-C<.> catentation operations.  Thus, C<"$foo XXX '@arr'"> becomes:
+C<.> catenation operations.  Thus, C<"$foo XXX '@arr'"> becomes:
 
   $foo . " XXX '" . (join $", @arr) . "'";
 
@@ -1731,7 +1737,7 @@ A (file)glob evaluates its (embedded) argument only when it is
 starting a new list.  All values must be read before it will start
 over.  In list context, this isn't important because you automatically
 get them all anyway.  However, in scalar context the operator returns
-the next value each time it's called, or C
+the next value each time it's called, or C<undef> when the list has
 run out.  As with filehandle reads, an automatic C<defined> is
 generated when the glob occurs in the test part of a C<while>,
 because legal glob returns (e.g. a file called F<0>) would otherwise