-#!/usr/local/bin/perl
-eval 'exec perl -S $0 ${1+"$@"}'
- if 0;
-
-use Config;
-if ($^O eq 'VMS') {
- $diagnostics::PODFILE = VMS::Filespec::unixify($Config{'privlibexp'}) .
- '/pod/perldiag.pod';
-}
-else { $diagnostics::PODFILE= $Config{privlibexp} . "/pod/perldiag.pod"; }
-
package diagnostics;
-require 5.001;
-use English;
-use Carp;
=head1 NAME
BEGIN { $diagnostics::PRETTY = 1 }
I could start up faster by delaying compilation until it should be
-needed, but this gets a "panic: top_level"
-when using the pragma form in 5.001e.
+needed, but this gets a "panic: top_level" when using the pragma form
+in Perl 5.001e.
While it's true that this documentation is somewhat subserious, if you use
a program named I<splain>, you should expect a bit of whimsy.
=head1 AUTHOR
-Tom Christiansen F<E<lt>tchrist@mox.perl.comE<gt>>, 25 June 1995.
+Tom Christiansen <F<tchrist@mox.perl.com>>, 25 June 1995.
=cut
+require 5.001;
+use Carp;
+
+use Config;
+($privlib, $archlib) = @Config{qw(privlibexp archlibexp)};
+if ($^O eq 'VMS') {
+ require VMS::Filespec;
+ $privlib = VMS::Filespec::unixify($privlib);
+ $archlib = VMS::Filespec::unixify($archlib);
+}
+@trypod = ("$archlib/pod/perldiag.pod",
+ "$privlib/pod/perldiag-$].pod",
+ "$privlib/pod/perldiag.pod");
+($PODFILE) = ((grep { -e } @trypod), $trypod[$#trypod])[0];
+
$DEBUG ||= 0;
my $WHOAMI = ref bless []; # nobody's business, prolly not even mine
-$OUTPUT_AUTOFLUSH = 1;
+$| = 1;
local $_;
unless (caller) {
$standalone++;
require Getopt::Std;
- Getopt::Std::getopts('pdvf:') || die "Usage: $0 [-v] [-p] [-f splainpod]";
+ Getopt::Std::getopts('pdvf:')
+ or die "Usage: $0 [-v] [-p] [-f splainpod]";
$PODFILE = $opt_f if $opt_f;
$DEBUG = 2 if $opt_d;
$VERBOSE = $opt_v;
}
next;
}
- $header = $1;
+
+ # strip formatting directives in =item line
+ ($header = $1) =~ s/[A-Z]<(.*?)>/$1/g;
if ($header =~ /%[sd]/) {
$rhs = $lhs = $header;
#$lhs =~ s/\377([^\377]*)$/\Q$1\E\$/;
$lhs =~ s/\377([^\377]*)$/\Q$1\E/;
$lhs =~ s/\377//g;
+ $lhs =~ s/\.\*\?$/.*/; # Allow %s at the end to eat it all
}
- $transmo .= " s{^$lhs}\n {\Q$rhs\E}\n\t&& return 1;\n";
+ $transmo .= " s{^$lhs}\n {\Q$rhs\E}s\n\t&& return 1;\n";
} else {
$transmo .= " m{^\Q$header\E} && return 1;\n";
}
- print STDERR "Already saw $header" if $msg{$header};
+ print STDERR "$WHOAMI: Duplicate entry: \"$header\"\n"
+ if $msg{$header};
$msg{$header} = '';
}
if ($standalone) {
if (!@ARGV and -t STDIN) { print STDERR "$0: Reading from STDIN\n" }
- while ($error = <>) {
+ while (defined ($error = <>)) {
splainthis($error) || print THITHER $error;
}
exit;
sub death_trap {
my $exception = $_[0];
- splainthis($exception);
+
+ # See if we are coming from anywhere within an eval. If so we don't
+ # want to explain the exception because it's going to get caught.
+ my $in_eval = 0;
+ my $i = 0;
+ while (1) {
+ my $caller = (caller($i++))[3] or last;
+ if ($caller eq '(eval)') {
+ $in_eval = 1;
+ last;
+ }
+ }
+
+ splainthis($exception) unless $in_eval;
if (caller eq $WHOAMI) { print STDERR "INTERNAL EXCEPTION: $exception"; }
&$olddie if defined $olddie and $olddie and $olddie ne \&death_trap;
- $SIG{__DIE__} = $SIG{__WARN__} = '';
+
+ # We don't want to unset these if we're coming from an eval because
+ # then we've turned off diagnostics. (Actually what does this next
+ # line do? -PSeibel)
+ $SIG{__DIE__} = $SIG{__WARN__} = '' unless $in_eval;
local($Carp::CarpLevel) = 1;
confess "Uncaught exception from user code:\n\t$exception";
# up we go; where we stop, nobody knows, but i think we die now
exists $HTML_Escapes{$1}
? do { $HTML_Escapes{$1} }
: do {
- warn "Unknown escape: $& in $_";
+ warn "Unknown escape: E<$1> in $_";
"E<$1>";
}
}
sub shorten {
my $line = $_[0];
- if (length $line > 79) {
+ if (length($line) > 79 and index($line, "\n") == -1) {
my $space_place = rindex($line, ' ', 79);
if ($space_place != -1) {
substr($line, $space_place, 1) = "\n\t";