perldelta for 67a057d6d8 (charnames crash)

[perl5.git] / pod / perl.pod

diff --git a/pod/perl.pod b/pod/perl.pod
index 2956a8a..571c190 100644 (file)
--- a/pod/perl.pod
+++ b/pod/perl.pod
@@ -15,6 +15,8 @@ B<perl>       S<[ B<-sTtuUWX> ]>
        S<[ B<-i>[I<extension>] ]>
        S<[ [B<-e>|B<-E>] I<'command'> ] [ B<--> ] [ I<programfile> ] [ I<argument> ]...>
 
        S<[ B<-i>[I<extension>] ]>
        S<[ [B<-e>|B<-E>] I<'command'> ] [ B<--> ] [ I<programfile> ] [ I<argument> ]...>
 

+For more information on these options, you can run C<perldoc perlrun>.
+

 =head1 GETTING HELP
 
 The F<perldoc> program gives you access to all the documentation that comes
 =head1 GETTING HELP
 
 The F<perldoc> program gives you access to all the documentation that comes


@@ -50,6 +52,7 @@ aux a2p c2ph h2ph h2xs perlbug pl2pm pod2html pod2man s2p splain xsubpp
 
     perl               Perl overview (this section)
     perlintro          Perl introduction for beginners
 
     perl               Perl overview (this section)
     perlintro          Perl introduction for beginners

+    perlrun            Perl execution and options

     perltoc            Perl documentation table of contents
 
 =head2 Tutorials
     perltoc            Perl documentation table of contents
 
 =head2 Tutorials


@@ -94,7 +97,6 @@ aux a2p c2ph h2ph h2xs perlbug pl2pm pod2html pod2man s2p splain xsubpp
     perlpod            Perl plain old documentation
     perlpodspec        Perl plain old documentation format specification
     perlpodstyle       Perl POD style guide
     perlpod            Perl plain old documentation
     perlpodspec        Perl plain old documentation format specification
     perlpodstyle       Perl POD style guide

-    perlrun            Perl execution and options

     perldiag           Perl diagnostic messages
     perllexwarn        Perl warnings and their control
     perldebug          Perl debugging
     perldiag           Perl diagnostic messages
     perllexwarn        Perl warnings and their control
     perldebug          Perl debugging


@@ -177,14 +179,21 @@ aux a2p c2ph h2ph h2xs perlbug pl2pm pod2html pod2man s2p splain xsubpp
 
     perlhist           Perl history records
     perldelta          Perl changes since previous version
 
     perlhist           Perl history records
     perldelta          Perl changes since previous version

+    perl5176delta      Perl changes in version 5.17.6
+    perl5175delta      Perl changes in version 5.17.5
+    perl5174delta      Perl changes in version 5.17.4
+    perl5173delta      Perl changes in version 5.17.3

     perl5172delta      Perl changes in version 5.17.2
     perl5171delta      Perl changes in version 5.17.1
     perl5170delta      Perl changes in version 5.17.0
     perl5161delta      Perl changes in version 5.16.1
     perl5172delta      Perl changes in version 5.17.2
     perl5171delta      Perl changes in version 5.17.1
     perl5170delta      Perl changes in version 5.17.0
     perl5161delta      Perl changes in version 5.16.1

+    perl5162delta      Perl changes in version 5.16.2

     perl5160delta      Perl changes in version 5.16.0
     perl5160delta      Perl changes in version 5.16.0

+    perl5143delta      Perl changes in version 5.14.3

     perl5142delta      Perl changes in version 5.14.2
     perl5141delta      Perl changes in version 5.14.1
     perl5140delta      Perl changes in version 5.14.0
     perl5142delta      Perl changes in version 5.14.2
     perl5141delta      Perl changes in version 5.14.1
     perl5140delta      Perl changes in version 5.14.0

+    perl5125delta      Perl changes in version 5.12.5

     perl5124delta      Perl changes in version 5.12.4
     perl5123delta      Perl changes in version 5.12.3
     perl5122delta      Perl changes in version 5.12.2
     perl5124delta      Perl changes in version 5.12.4
     perl5123delta      Perl changes in version 5.12.3
     perl5122delta      Perl changes in version 5.12.2


@@ -225,13 +234,11 @@ aux a2p c2ph h2ph h2xs perlbug pl2pm pod2html pod2man s2p splain xsubpp
 
     perlaix            Perl notes for AIX
     perlamiga          Perl notes for AmigaOS
 
     perlaix            Perl notes for AIX
     perlamiga          Perl notes for AmigaOS

-    perlbeos           Perl notes for BeOS

     perlbs2000         Perl notes for POSIX-BC BS2000
     perlce             Perl notes for WinCE
     perlcygwin         Perl notes for Cygwin
     perldgux           Perl notes for DG/UX
     perldos            Perl notes for DOS
     perlbs2000         Perl notes for POSIX-BC BS2000
     perlce             Perl notes for WinCE
     perlcygwin         Perl notes for Cygwin
     perldgux           Perl notes for DG/UX
     perldos            Perl notes for DOS

-    perlepoc           Perl notes for EPOC

     perlfreebsd        Perl notes for FreeBSD
     perlhaiku          Perl notes for Haiku
     perlhpux           Perl notes for HP-UX
     perlfreebsd        Perl notes for FreeBSD
     perlhaiku          Perl notes for Haiku
     perlhpux           Perl notes for HP-UX


@@ -240,7 +247,6 @@ aux a2p c2ph h2ph h2xs perlbug pl2pm pod2html pod2man s2p splain xsubpp
     perllinux          Perl notes for Linux
     perlmacos          Perl notes for Mac OS (Classic)
     perlmacosx         Perl notes for Mac OS X
     perllinux          Perl notes for Linux
     perlmacos          Perl notes for Mac OS (Classic)
     perlmacosx         Perl notes for Mac OS X

-    perlmpeix          Perl notes for MPE/iX

     perlnetware        Perl notes for NetWare
     perlopenbsd        Perl notes for OpenBSD
     perlos2            Perl notes for OS/2
     perlnetware        Perl notes for NetWare
     perlopenbsd        Perl notes for OpenBSD
     perlos2            Perl notes for OS/2


@@ -252,7 +258,6 @@ aux a2p c2ph h2ph h2xs perlbug pl2pm pod2html pod2man s2p splain xsubpp
     perlsolaris        Perl notes for Solaris
     perlsymbian        Perl notes for Symbian
     perltru64          Perl notes for Tru64
     perlsolaris        Perl notes for Solaris
     perlsymbian        Perl notes for Symbian
     perltru64          Perl notes for Tru64

-    perlvmesa          Perl notes for VM/ESA

     perlvms            Perl notes for VMS
     perlvos            Perl notes for Stratus VOS
     perlwin32          Perl notes for Windows
     perlvms            Perl notes for VMS
     perlvos            Perl notes for Stratus VOS
     perlwin32          Perl notes for Windows


@@ -273,8 +278,9 @@ On a Unix-like system, these documentation files will usually also be
 available as manpages for use with the F<man> program.
 
 In general, if something strange has gone wrong with your program and you're
 available as manpages for use with the F<man> program.
 
 In general, if something strange has gone wrong with your program and you're

-not sure where you should look for help, try the B<-w> switch first.  It will
-often point out exactly where the trouble is.
+not sure where you should look for help, try making your code comply with
+B<use strict> and B<use warnings>.  These will often point out exactly
+where the trouble is.

 
 =head1 DESCRIPTION
 
 
 =head1 DESCRIPTION
 


@@ -424,8 +430,13 @@ Perl developers, please write to perl-thanks@perl.org .
 
 =head1 DIAGNOSTICS
 
 
 =head1 DIAGNOSTICS
 

-The C<use warnings> pragma (and the B<-w> switch) produces some 
-lovely diagnostics.
+Using the C<use strict> pragma ensures that all variables are properly
+declared and prevents other misuses of legacy Perl features.
+
+The C<use warnings> pragma produces some lovely diagnostics. One can
+also use the B<-w> flag, but its use is normally discouraged, because
+it gets applied to all executed Perl code, including that not under
+your control.

 
 See L<perldiag> for explanations of all Perl's diagnostics.  The C<use
 diagnostics> pragma automatically turns Perl's normally terse warnings
 
 See L<perldiag> for explanations of all Perl's diagnostics.  The C<use
 diagnostics> pragma automatically turns Perl's normally terse warnings


@@ -439,12 +450,12 @@ B<-e> is counted as one line.)
 Setuid scripts have additional constraints that can produce error
 messages such as "Insecure dependency".  See L<perlsec>.
 
 Setuid scripts have additional constraints that can produce error
 messages such as "Insecure dependency".  See L<perlsec>.
 

-Did we mention that you should definitely consider using the B<-w>
-switch?
+Did we mention that you should definitely consider using the B<use warnings>
+pragma?

 
 =head1 BUGS
 
 
 =head1 BUGS
 

-The B<-w> switch is not mandatory.
+The behavior implied by the B<use warnings> pragma is not mandatory.

 
 Perl is at the mercy of your machine's definitions of various
 operations such as type casting, atof(), and floating-point
 
 Perl is at the mercy of your machine's definitions of various
 operations such as type casting, atof(), and floating-point