=item / must be followed by a*, A* or Z*
-(F) You had an pack template indicating a counted-length string,
+(F) You had a pack template indicating a counted-length string,
Currently the only things that can have their length counted are a*, A* or Z*.
See L<perlfunc/pack>.
(W) You used a backslash-character combination which is not recognized
by Perl. This combination appears in an interpolated variable or a
-C<'>-delimited regular expression.
+C<'>-delimited regular expression. The character was understood literally.
+
+=item /%s/: Unrecognized escape \\%c in character class passed through
+
+(W) You used a backslash-character combination which is not recognized
+by Perl inside character classes. The character was understood literally.
=item /%s/ should probably be written as "%s"
(W) You have used a pattern where Perl expected to find a string,
-like in the first argument to C<join>. Perl will treat the true
+as in the first argument to C<join>. Perl will treat the true
or false result of matching the pattern against $_ as the string,
which is probably not what you had in mind.
=item Can't modify non-lvalue subroutine call
-(F) Subroutines used in lvalue context should be marked as such, see
-L<perlsub/"Lvalue subroutines">.
+(F) Subroutines meant to be used in lvalue context should be declared as
+such, see L<perlsub/"Lvalue subroutines">.
=item Can't modify nonexistent substring
=item Character class [:%s:] unknown
(F) The class in the character class [: :] syntax is unknown.
+See L<perlre>.
=item Character class syntax [%s] belongs inside character classes
(W) The character class constructs [: :], [= =], and [. .] go
I<inside> character classes, the [] are part of the construct,
-for example: /[012[:alpha:]345]/. Note that the last two constructs
-are not currently implemented, they are placeholders for future extensions.
+for example: /[012[:alpha:]345]/. Note that [= =] and [. .]
+are not currently implemented; they are simply placeholders for
+future extensions.
=item Character class syntax [. .] is reserved for future extensions
usually not what you want. Consider providing a default target
package, e.g. bless($ref, $p || 'MyPackage');
+=item false [] range "%s" in regexp
+
+(W) A character class range must start and end at a literal character, not
+another character class like C<\d> or C<[:alpha:]>. The "-" in your false
+range is interpreted as a literal "-". Consider quoting the "-", "\-".
+See L<perlre>.
+
=item Fatal VMS error at %s, line %d
(P) An error peculiar to VMS. Something untoward happened in a VMS system
=item Filehandle %s opened only for output
(W) You tried to read from a filehandle opened only for writing. If you
-intended it to be a read-write filehandle, you needed to open it with
+intended it to be a read/write filehandle, you needed to open it with
"+E<lt>" or "+E<gt>" or "+E<gt>E<gt>" instead of with "E<lt>" or nothing. If
you intended only to read from the file, use "E<lt>". See
L<perlfunc/open>.
=item Illegal binary digit %s
-(F) You used a digit other than 0 and 1 in a binary number.
+(F) You used a digit other than 0 or 1 in a binary number.
=item Illegal octal digit %s
=item Integer overflow in %s number
(W) The hexadecimal, octal or binary number you have specified either
-as a literal in your code or as a scalar is too big for your
+as a literal or as an argument to hex() or oct() is too big for your
architecture, and has been converted to a floating point number. On a
32-bit architecture the largest hexadecimal, octal or binary number
representable without overflow is 0xFFFFFFFF, 037777777777, or
The indicated attributes for a subroutine or variable were not recognized
by Perl or by a user-supplied handler. See L<attributes>.
-=item invalid [] range in regexp
+=item invalid [] range "%s" in regexp
(F) The range specified in a character class had a minimum character
-greater than the maximum character, or the range didn't start/end with
-a literal character. See L<perlre>.
+greater than the maximum character. See L<perlre>.
=item Invalid conversion in %s: "%s"
if the last stat that wrote to the stat buffer already went past
the symlink to get to the real file. Use an actual filename instead.
-=item This Perl can't reset CRTL eviron elements (%s)
+=item This Perl can't reset CRTL environ elements (%s)
=item This Perl can't set CRTL environ elements (%s=%s)
=item Unknown open() mode '%s'
-(F) The second argument of 3-arguments open is not one from the list
-of C<L<lt>>, C<L<gt>>, C<E<gt>E<gt>>, C<+L<lt>>, C<+L<gt>>,
-C<+E<gt>E<gt>>, C<-|>, C<|-> of possible open() modes.
+(F) The second argument of 3-argument open() is not among the list
+of valid modes: C<L<lt>>, C<L<gt>>, C<E<gt>E<gt>>, C<+L<lt>>,
+C<+L<gt>>, C<+E<gt>E<gt>>, C<-|>, C<|->.
=item Unknown process %x sent message to prime_env_iter: %s
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