Ignore a lvalue attribute after the subroutine has been defined, and warn about it...

[perl5.git] / pod / perldiag.pod

diff --git a/pod/perldiag.pod b/pod/perldiag.pod
index a031b24..2b8d2c0 100644 (file)
--- a/pod/perldiag.pod
+++ b/pod/perldiag.pod
@@ -717,9 +717,9 @@ is no builtin with the name C<word>.
 =item Can't find %s character property "%s"
 
 (F) You used C<\p{}> or C<\P{}> but the character property by that name
-could not be found. Maybe you misspelled the name of the property
-(remember that the names of character properties consist only of
-alphanumeric characters), or maybe you forgot the C<Is> or C<In> prefix?
+could not be found. Maybe you misspelled the name of the property?
+See L<perluniprops/Properties accessible through \p{} and \P{}>
+for a complete list of available properties.
 
 =item Can't find label %s
 
@@ -752,8 +752,10 @@ editor will have a way to help you find these characters.
 =item Can't find Unicode property definition "%s"
 
 (F) You may have tried to use C<\p> which means a Unicode property (for
-example C<\p{Lu}> is all uppercase letters).  If you did mean to use a
-Unicode property, see L<perlunicode> for the list of known properties.
+example C<\p{Lu}> matches all uppercase letters).  If you did mean to use a
+Unicode property, see
+L<perluniprops/Properties accessible through \p{} and \P{}>
+for a complete list of available properties.
 If you didn't mean to use a Unicode property, escape the C<\p>, either
 by C<\\p> (just the C<\p>) or by C<\Q\p> (the rest of the string, until
 possible C<\E>).
@@ -1924,8 +1926,8 @@ to your Perl administrator.
 
 =item Illegal character in prototype for %s : %s
 
-(W syntax) An illegal character was found in a prototype declaration.  Legal
-characters in prototypes are $, @, %, *, ;, [, ], &, and \.
+(W illegalproto) An illegal character was found in a prototype declaration.
+Legal characters in prototypes are $, @, %, *, ;, [, ], &, and \.
 
 =item Illegal declaration of anonymous subroutine
 
@@ -2305,6 +2307,14 @@ You may wish to switch to using L<Math::BigInt> explicitly.
 by that?  lstat() makes sense only on filenames.  (Perl did a fstat()
 instead on the filehandle.)
 
+=item lvalue attribute ignored after the subroutine has been defined
+
+(W) Making a subroutine an lvalue subroutine after it has been defined
+by declaring the subroutine with a lvalue attribute is not
+possible. To make the the subroutine a lvalue subroutine add the
+lvalue attribute to the definition, or put the the declaration before
+the definition.
+
 =item Lvalue subs returning %s not implemented yet
 
 (F) Due to limitations in the current implementation, array and hash
@@ -3533,7 +3543,7 @@ in L<perlos2>.
 
 =item Prototype after '%c' for %s : %s
 
-(W syntax) A character follows % or @ in a prototype. This is useless,
+(W illegalproto) A character follows % or @ in a prototype. This is useless,
 since % and @ gobble the rest of the subroutine arguments.
 
 =item Prototype mismatch: %s vs %s
@@ -4394,8 +4404,11 @@ representative, who probably put it there in the first place.
 (W utf8) Certain codepoints, such as U+FFFE and U+FFFF, are defined by the
 Unicode standard to be non-characters. Those are legal codepoints, but are
 reserved for internal use; so, applications shouldn't attempt to exchange
-them. If you know what you are doing you can turn off this warning by
-C<no warnings 'utf8';>.
+them.  In some cases, this message is also given if you use a codepoint that
+isn't in Unicode--that is it is above the legal maximum of U+10FFFF.  These
+aren't legal at all in Unicode, so they are illegal for interchange, but can be
+used internally in a Perl program.  If you know what you are doing you can turn
+off this warning by C<no warnings 'utf8';>.
 
 =item Unknown BYTEORDER
 
@@ -4913,7 +4926,7 @@ requesting a Unicode character between the code points 0xD800 and
 0xDFFF (inclusive).  That range is reserved exclusively for the use of
 UTF-16 encoding (by having two 16-bit UCS-2 characters); but Perl
 encodes its characters in UTF-8, so what you got is a very illegal
-character.  If you really know what you are doing you can turn off
+character.  If you really really know what you are doing you can turn off
 this warning by C<no warnings 'utf8';>.
 
 =item Value of %s can be "0"; test with defined()