[perl #57016] debugger: o warn=0 die=0 ignored

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

diff --git a/pod/perlrun.pod b/pod/perlrun.pod
index 74fd0ad..2a53ec7 100644 (file)
--- a/pod/perlrun.pod
+++ b/pod/perlrun.pod
@@ -899,6 +899,14 @@ tells Perl that the program is embedded in a larger chunk of unrelated
 ASCII text, such as in a mail message.  Leading garbage will be
 discarded until the first line that starts with #! and contains the
 string "perl".  Any meaningful switches on that line will be applied.
+
+All references to line numbers by the program (warnings, errors, ...)
+will treat the #! line as the first line.
+Thus a warning on the 2nd line of the program (which is on the 100th
+line in the file) will be reported as line 2, and not as line 100.
+This can be overridden by using the #line directive.
+(See L<perlsyn/"Plain-Old-Comments-(Not!)">)
+
 If a directory name is specified, Perl will switch to that directory
 before running the program.  The B<-x> switch controls only the
 disposal of leading garbage.  The program must be terminated with
@@ -1085,6 +1093,9 @@ compiler's numeric file descriptor routines. There is an experimental native
 C<win32> layer which is expected to be enhanced and should eventually be
 the default under Win32.
 
+The PERLIO environment variable is completely ignored when perl
+is run in taint mode.
+
 =item PERLIO_DEBUG
 X<PERLIO_DEBUG>
 
@@ -1109,6 +1120,9 @@ A list of directories in which to look for Perl library
 files before looking in the standard library and the current directory.
 If PERL5LIB is defined, PERLLIB is not used.
 
+The PERLLIB environment variable is completely ignored when perl
+is run in taint mode.
+
 =item PERL5DB
 X<PERL5DB>
 
@@ -1116,6 +1130,9 @@ The command used to load the debugger code.  The default is:
 
        BEGIN { require 'perl5db.pl' }
 
+The PERL5DB environment variable only used when perl is started with
+a bare B<-d> switch.
+
 =item PERL5DB_THREADED
 X<PERL5DB_THREADED>
 
@@ -1138,6 +1155,11 @@ fit for interactive use, and setting COMSPEC to such a shell may
 interfere with the proper functioning of other programs (which usually
 look in COMSPEC to find a shell fit for interactive use).
 
+Before Perl 5.10.0 and 5.8.8, PERL5SHELL was not taint checked
+when running external commands.  It is recommended that
+you explicitly set (or delete) C<$ENV{PERL5SHELL}> when running
+in taint mode under Windows.
+
 =item PERL_ALLOW_NON_IFS_LSP (specific to the Win32 port)
 X<PERL_ALLOW_NON_IFS_LSP>