to be an object method (see L<perlsub/"Subroutine Attributes"> or
L<attributes>).
+=item Ambiguous range in transliteration operator
+
+(F) You wrote something like C<tr/a-z-0//> which doesn't mean anything at
+all. To include a C<-> character in a transliteration, put it either
+first or last. (In the past, C<tr/a-z-0//> was synonymous with
+C<tr/a-y//>, which was probably not what you would have expected.)
+
=item Ambiguous use of %s resolved as %s
(W ambiguous)(S) You said something that may not be interpreted the way
functioning as a class, but that package doesn't define that particular
method, nor does any of its base classes. See L<perlobj>.
+=item (perhaps you forgot to load "%s"?)
+
+(F) This is an educated guess made in conjunction with the message
+"Can't locate object method \"%s\" via package \"%s\"". It often means
+that a method requires a package that has not been loaded.
+
=item Can't locate package %s for @%s::ISA
(W syntax) The @ISA array contained the name of another package that
I<inside> character classes, the [] are part of the construct, for
example: /[012[:alpha:]345]/. Note that [= =] and [. .] are not
currently implemented; they are simply placeholders for future
-extensions.
+extensions and will cause fatal errors.
=item Character class syntax [. .] is reserved for future extensions
-(W regexp) Within regular expression character classes ([]) the syntax
+(F regexp) Within regular expression character classes ([]) the syntax
beginning with "[." and ending with ".]" is reserved for future
-extensions. If you need to represent those character sequences inside a
-regular expression character class, just quote the square brackets with
-the backslash: "\[." and ".\]".
+extensions. If you need to represent those character sequences inside
+a regular expression character class, just quote the square brackets
+with the backslash: "\[." and ".\]".
=item Character class syntax [= =] is reserved for future extensions
-(W regexp) Within regular expression character classes ([]) the syntax
+(F) Within regular expression character classes ([]) the syntax
beginning with "[=" and ending with "=]" is reserved for future
-extensions. If you need to represent those character sequences inside a
-regular expression character class, just quote the square brackets with
-the backslash: "\[=" and "=\]".
+extensions. If you need to represent those character sequences inside
+a regular expression character class, just quote the square brackets
+with the backslash: "\[=" and "=\]".
=item Character class [:%s:] unknown
recursion and are not subject to a limit.) Try shortening the string
under examination; looping in Perl code (e.g. with C<while>) rather than
in the regular expression engine; or rewriting the regular expression so
-that it is simpler or backtracks less. (See L<perlbook> for information
+that it is simpler or backtracks less. (See L<perlfaq2> for information
on I<Mastering Regular Expressions>.)
=item connect() on closed socket %s
(F) The range specified in a character class had a minimum character
greater than the maximum character. See L<perlre>.
+=item invalid [] range "%s" in transliteration operator
+
+(F) The range specified in the tr/// or y/// operator had a minimum
+character greater than the maximum character. See L<perlop>.
+
=item Invalid separator character %s in attribute list
(F) Something other than a colon or whitespace was seen between the
with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix of
a builtin library search path, prefix2 is substituted. The error may
appear if components are not found, or are too long. See
-"PERLLIB_PREFIX" in F<README.os2>.
+"PERLLIB_PREFIX" in L<perlos2>.
=item %s matches null string many times
=item PERL_SH_DIR too long
(F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the
-C<sh>-shell in. See "PERL_SH_DIR" in F<README.os2>.
+C<sh>-shell in. See "PERL_SH_DIR" in L<perlos2>.
=item perl: warning: Setting locale failed.
applications die in silence. It is considered a feature of the OS/2
port. One can easily disable this by appropriate sighandlers, see
L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT"
-in F<README.os2>.
+in L<perlos2>.
=item Prototype mismatch: %s vs %s
of Perl executables, some of which may support fork, some not. Try
changing the name you call Perl by to C<perl_>, C<perl__>, and so on.
+=item Unsupported script encoding
+
+(F) Your program file begins with a Unicode Byte Order Mark (BOM) which
+declares it to be in a Unicode encoding that Perl cannot yet read.
+
=item Unsupported socket function "%s" called
(F) Your machine doesn't support the Berkeley socket mechanism, or at
character was not found. You may need to add (or remove) a backslash
character to get your parentheses to balance. See L<attributes>.
+=item Unterminated compressed integer
+
+(F) An argument to unpack("w",...) was incompatible with the BER
+compressed integer format and could not be converted to an integer.
+See L<perlfunc/pack>.
+
=item Unterminated <> operator
(F) The lexer saw a left angle bracket in a place where it was expecting
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