5 use feature 'unicode_strings';
15 require '../regen/regen_lib.pl';
24 podcheck.t - Look for possible problems in the Perl pods
29 ./perl -I../lib porting/podcheck.t [--show_all] [--cpan] [--deltas]
30 [--counts] [ FILE ...]
31 ./perl -I../lib porting/podcheck.t --add_link MODULE ...
33 ./perl -I../lib porting/podcheck.t --regen
37 podcheck.t is an extension of Pod::Checker. It looks for pod errors and
38 potential errors in the files given as arguments, or if none specified, in all
39 pods in the distribution workspace, except certain known special ones
40 (specified below). It does additional checking beyond that done by
41 Pod::Checker, and keeps a database of known potential problems, and will
42 fail a pod only if the number of such problems differs from that given in the
43 database. It also suppresses the C<(section) deprecated> message from
44 Pod::Checker, since specifying the man page section number is quite proper to do.
46 The additional checks it makes are:
50 =item Cross-pod link checking
52 Pod::Checker verifies that links to an internal target in a pod are not
53 broken. podcheck.t extends that (when called without FILE arguments) to
54 external links. It does this by gathering up all the possible targets in the
55 workspace, and cross-checking them. It also checks that a non-broken link
56 points to just one target. (The destination pod could have two targets with
59 The way that the C<LE<lt>E<gt>> pod command works (for links outside the pod)
60 is to actually create a link to C<search.cpan.org> with an embedded query for
61 the desired pod or man page. That means that links outside the distribution
62 are valid. podcheck.t doesn't verify the validity of such links, but instead
63 keeps a data base of those known to be valid. This means that if a link to a
64 target not on the list is created, the target needs to be added to the data
65 base. This is accomplished via the L<--add_link|/--add_link MODULE ...>
66 option to podcheck.t, described below.
68 =item An internal link that isn't so specified
70 If a link is broken, but there is an existing internal target of the same
71 name, it is likely that the internal target was meant, and the C<"/"> is
72 missing from the C<LE<lt>E<gt>> pod command.
74 =item Verbatim paragraphs that wrap in an 80 column window
76 It's annoying to have lines wrap when displaying pod documentation in a
77 terminal window. This checks that all such lines fit, and for those that
78 don't, it tells you how much needs to be cut in order to fit. However,
79 if you're fixing these, keep in mind that some terminal/pager combinations
80 require really a maximum of 79 or 78 columns to display properly.
82 Often, the easiest thing to do to gain space for these is to lower the indent
85 =item Missing or duplicate NAME or missing NAME short description
87 A pod can't be linked to unless it has a unique name.
88 And a NAME should have a dash and short description after it.
90 =item =encoding statement issues
92 This indicates if an C<=encoding> statement should be present, or moved to the
95 =item Items that perhaps should be links
97 There are mentions of apparent files in the pods that perhaps should be links
98 instead, using C<LE<lt>...E<gt>>
100 =item Items that perhaps should be C<FE<lt>...E<gt>>
102 What look like path names enclosed in C<CE<lt>...E<gt>> should perhaps have
103 C<FE<lt>...E<gt>> mark-up instead.
107 A number of issues raised by podcheck.t and by the base Pod::Checker are not
108 really problems, but merely potential problems, that is, false positives.
109 After inspecting them and
110 deciding that they aren't real problems, it is possible to shut up this program
111 about them, unlike base Pod::Checker. To do this, call podcheck.t with the
112 C<--regen> option to regenerate the database. This tells it that all existing
113 issues are to not be mentioned again.
115 This isn't fool-proof. The database merely keeps track of the number of these
116 potential problems of each type for each pod. If a new problem of a given
117 type is introduced into the pod, podcheck.t will spit out all of them. You
118 then have to figure out which is the new one, and should it be changed or not.
119 But doing it this way insulates the database from having to keep track of line
120 numbers of problems, which may change, or the exact wording of each problem
121 which might also change without affecting whether it is a problem or not.
123 Also, if the count of potential problems of a given type for a pod decreases,
124 the database must be regenerated so that it knows the new number. The program
125 gives instructions when this happens.
127 Some pods will have varying numbers of problems of a given type. This can
128 be handled by manually editing the database file (see L</FILES>), and setting
129 the number of those problems for that pod to a negative number. This will
130 cause the corresponding error to always be suppressed no matter how many there
133 There is currently no check that modules listed as valid in the data base
134 actually are. Thus any errors introduced there will remain there.
136 =head2 Specially handled pods
142 This pod is generated by pasting bits from other pods. Errors in those bits
143 will show up as errors here, as well as for those other pods. Therefore
144 errors here are suppressed, and the pod is checked only to verify that nodes
145 within it that are externally linked to actually exist.
149 The current perldelta pod is initialized from a template that contains
150 placeholder text. Some of this text is in the form of links that don't really
151 exist. Any such links that are listed in C<@perldelta_ignore_links> will not
152 generate messages. It is presumed that these links will be cleaned up when
153 the perldelta is cleaned up for release since they should be marked with
156 =item Porting/perldelta_template.pod
158 This is not a pod, but a template for C<perldelta>. Any errors introduced
159 here will show up when C<perldelta> is created from it.
161 =item cpan-upstream pods
163 See the L</--cpan> option documentation
167 See the L</--deltas> option documentation
175 =item --add_link MODULE ...
177 Use this option to teach podcheck.t that the C<MODULE>s or man pages actually
178 exist, and to silence any messages that links to them are broken.
180 podcheck.t checks that links within the Perl core distribution are valid, but
181 it doesn't check links to man pages or external modules. When it finds
182 a broken link, it checks its data base of external modules and man pages,
183 and only if not found there does it raise a message. This option just adds
184 the list of modules and man page references that follow it on the command line
190 ./perl -I../lib porting/podcheck.t --add_link Unicode::Casing
192 causes the external module "Unicode::Casing" to be added to the data base, so
193 C<LE<lt>Unicode::Casing<gt>> will be considered valid.
197 Regenerate the data base used by podcheck.t to include all the existing
198 potential problems. Future runs of the program will not then flag any of
203 Normally, all pods in the cpan directory are skipped, except to make sure that
204 any blead-upstream links to such pods are valid.
205 This option will cause cpan upstream pods to be fully checked.
209 Normally, all old perldelta pods are skipped, except to make sure that
210 any links to such pods are valid. This is because they are considered
211 stable, and perhaps trying to fix them will cause changes that will
212 misrepresent Perl's history. But, this option will cause them to be fully
217 Normally, if the number of potential problems of a given type found for a
218 pod matches the expected value in the database, they will not be displayed.
219 This option forces the database to be ignored during the run, so all potential
220 problems are displayed and will fail their respective pod test. Specifying
221 any particular FILES to operate on automatically selects this option.
225 Instead of testing, this just dumps the counts of the occurrences of the
226 various types of potential problems in the data base.
232 The database is stored in F<t/porting/known_pod_issues.dat>
240 #####################################################
241 # HOW IT WORKS (in general)
243 # If not called with specific files to check, the directory structure is
244 # examined for files that have pods in them. Files that might not have to be
245 # fully parsed (e.g. in cpan) are parsed enough at this time to find their
246 # pod's NAME, and to get a checksum.
248 # Those kinds of files are sorted last, but otherwise the pods are parsed with
249 # the package coded here, My::Pod::Checker, which is an extension to
250 # Pod::Checker that adds some tests and suppresses others that aren't
251 # appropriate. The latter module has no provision for capturing diagnostics,
252 # so a package, Tie_Array_to_FH, is used to force them to be placed into an
253 # array instead of printed.
255 # Parsing the files builds up a list of links. The files are gone through
256 # again, doing cross-link checking and outputting all saved-up problems with
259 # Sorting the files last that potentially don't need to be fully parsed allows
260 # us to not parse them unless there is a link to an internal anchor in them
261 # from something that we have already parsed. Keeping checksums allows us to
262 # not parse copies of other pods.
264 #####################################################
266 # 1 => Exclude low priority messages that aren't likely to be problems, and
267 # has many false positives; higher numbers give more messages.
268 my $Warnings_Level = 200;
270 # perldelta during construction may have place holder links.
271 our @perldelta_ignore_links = ( "XXX", "perl5YYYdelta", "perldiag/message" );
273 # To see if two pods with the same NAME are actually copies of the same pod,
274 # which is not an error, it uses a checksum to save work.
275 my $digest_type = "SHA-1";
277 my $original_dir = File::Spec->rel2abs(File::Spec->curdir);
278 my $data_dir = File::Spec->catdir($original_dir, 'porting');
279 my $known_issues = File::Spec->catfile($data_dir, 'known_pod_issues.dat');
282 my $MAX_LINE_LENGTH = 80; # 80 columns
283 my $INDENT = 7; # default nroff indent
285 # Our warning messages. Better not have [('"] in them, as those are used as
286 # delimiters for variable parts of the messages by poderror.
287 my $line_length = "Verbatim line length including indents exceeds $MAX_LINE_LENGTH by";
288 my $broken_link = "Apparent broken link";
289 my $broken_internal_link = "Apparent internal link is missing its forward slash";
290 my $see_not_linked = "? Should you be using L<...> instead of";
291 my $C_with_slash = "? Should you be using F<...> or maybe L<...> instead of";
292 my $multiple_targets = "There is more than one target";
293 my $duplicate_name = "Pod NAME already used";
294 my $need_encoding = "Should have =encoding statement because have non-ASCII";
295 my $encoding_first = "=encoding must be first command (if present)";
296 my $no_name = "There is no NAME";
297 my $missing_name_description = "The NAME should have a dash and short description after it";
299 # objects, tests, etc can't be pods, so don't look for them. Also skip
300 # files output by the patch program. Could also ignore most of .gitignore
301 # files, but not all, so don't.
302 my $non_pods = qr/ (?: \.
303 (?: [achot] | zip | gz | bz2 | jar | tar | tgz | PL | so
304 | orig | rej | patch # Patch program output
305 | sw[op] | \#.* # Editor droppings
306 | old # buildtoc output
309 ) | ~$ | \ \(Autosaved\)\.txt$ # Other editor droppings
313 # Pod::Checker messages to suppress
314 my @suppressed_messages = (
315 "(section) in", # Checker is wrong to flag this
316 "multiple occurrence of link target", # We catch independently the ones
317 # that are real problems.
319 "Entity number out of range", # Checker outputs this for anything above
320 # 255, and all Unicode is valid
324 # Returns bool as to if input message is one that is to be suppressed
327 return grep { $message =~ /^\Q$_/i } @suppressed_messages;
330 { # Closure to contain a simple subset of test.pl. This is to get rid of the
331 # unnecessary 'failed at' messages that would otherwise be output pointing
332 # to a particular line in this file.
334 my $current_test = 0;
339 $planned = $plan{tests};
340 print "1..$planned\n";
351 print "not " unless $success;
352 print "ok $current_test - $message\n";
358 my $n = @_ ? shift : 1;
361 print "ok $current_test # skip $why\n";
363 no warnings 'exiting';
372 print $message =~ s/^/# /mgr;
378 if ($planned && $planned != $current_test) {
380 "# Looks like you planned $planned tests but ran $current_test.\n";
385 # This is to get this to work across multiple file systems, including those
386 # that are not case sensitive. The db is stored in lower case, Un*x style,
387 # and all file name comparisons are done that way.
388 sub canonicalize($) {
390 my ($volume, $directories, $file)
391 = File::Spec->splitpath(File::Spec->canonpath($input));
392 # Assumes $volume is constant for everything in this directory structure
393 $directories = "" if ! $directories;
394 $file = "" if ! $file;
395 my $output = lc join '/', File::Spec->splitdir($directories), $file;
396 $output =~ s! / /+ !/!gx; # Multiple slashes => single slash
401 # List of known potential problems by pod and type.
404 # Pods given by the keys contain an interior node that is referred to from
406 my %has_referred_to_node;
413 my $do_upstream_cpan = 0; # Assume that are to skip anything in /cpan
414 my $do_deltas = 0; # And stable perldeltas
416 while (@ARGV && substr($ARGV[0], 0, 1) eq '-') {
417 my $arg = shift @ARGV;
419 $arg =~ s/^--/-/; # Treat '--' the same as a single '-'
420 if ($arg eq '-regen') {
423 elsif ($arg eq '-add_link') {
426 elsif ($arg eq '-cpan') {
427 $do_upstream_cpan = 1;
429 elsif ($arg eq '-deltas') {
432 elsif ($arg eq '-show_all') {
435 elsif ($arg eq '-counts') {
440 Unknown option '$arg'
442 Usage: $0 [ --regen | --cpan | --show_all | FILE ... | --add_link MODULE ... ]\n"
443 --add_link -> Add the MODULE and man page references to the data base
444 --regen -> Regenerate the data file for $0
445 --cpan -> Include files in the cpan subdirectory.
446 --deltas -> Include stable perldeltas
447 --show_all -> Show all known potential problems
448 --counts -> Don't test, but give summary counts of the currently
456 my $cpan_or_deltas = $do_upstream_cpan || $do_deltas;
457 if (($regen + $show_all + $show_counts + $add_link + $cpan_or_deltas ) > 1) {
458 croak "--regen, --show_all, --counts, and --add_link are mutually exclusive\n and none can be run with --cpan nor --deltas";
461 my $has_input_files = @files;
464 && ($regen || $show_counts || $do_upstream_cpan || $do_deltas))
466 croak "--regen, --counts, --deltas, and --cpan can't be used since using specific files";
469 if ($add_link && ! $has_input_files) {
470 croak "--add_link requires at least one module or man page reference";
473 our %problems; # potential problems found in this run
475 package My::Pod::Checker { # Extend Pod::Checker
476 use parent 'Pod::Checker';
478 # Uses inside out hash to protect from typos
479 # For new fields, remember to add to destructor DESTROY()
480 my %indents; # Stack of indents from =over's in effect for
482 my %current_indent; # Current line's indent
483 my %filename; # The pod is store in this file
484 my %skip; # is SKIP set for this pod
485 my %in_NAME; # true if within NAME section
486 my %in_begin; # true if within =begin section
487 my %linkable_item; # Bool: if the latest =item is linkable. It isn't
488 # for bullet and number lists
489 my %linkable_nodes; # Pod::Checker adds all =items to its node list,
490 # but not all =items are linkable to
491 my %seen_encoding_cmd; # true if have =encoding earlier
492 my %command_count; # Number of commands seen
493 my %seen_pod_cmd; # true if have =pod earlier
494 my %warned_encoding; # true if already have warned about =encoding
498 my $addr = Scalar::Util::refaddr $_[0];
499 delete $command_count{$addr};
500 delete $current_indent{$addr};
501 delete $filename{$addr};
502 delete $in_begin{$addr};
503 delete $indents{$addr};
504 delete $in_NAME{$addr};
505 delete $linkable_item{$addr};
506 delete $linkable_nodes{$addr};
507 delete $seen_encoding_cmd{$addr};
508 delete $seen_pod_cmd{$addr};
510 delete $warned_encoding{$addr};
516 my $filename = shift;
518 my $self = $class->SUPER::new(-quiet => 1,
519 -warnings => $Warnings_Level);
520 my $addr = Scalar::Util::refaddr $self;
521 $command_count{$addr} = 0;
522 $current_indent{$addr} = 0;
523 $filename{$addr} = $filename;
524 $in_begin{$addr} = 0;
526 $linkable_item{$addr} = 0;
527 $seen_encoding_cmd{$addr} = 0;
528 $seen_pod_cmd{$addr} = 0;
529 $warned_encoding{$addr} = 0;
533 # re's for messages that Pod::Checker outputs
534 my $location = qr/ \b (?:in|at|on|near) \s+ /xi;
535 my $optional_location = qr/ (?: $location )? /xi;
536 my $line_reference = qr/ [('"]? $optional_location \b line \s+
537 (?: \d+ | EOF | \Q???\E | - )
540 sub poderror { # Called to register a potential problem
542 # This adds an extra field to the parent hash, 'parameter'. It is
543 # used to extract the variable parts of a message leaving just the
544 # constant skeleton. This in turn allows the message to be
545 # categorized better, so that it shows up as a single type in our
546 # database, with the specifics of each occurrence not being stored with
552 my $addr = Scalar::Util::refaddr $self;
553 return if $skip{$addr};
555 # Input can be a string or hash. If a string, parse it to separate
556 # out the line number and convert to a hash for easier further
559 if (ref $opts ne 'HASH') {
560 $message = join "", $opts, @_;
562 if ($message =~ s/\s*($line_reference)//) {
563 ($line_number = $1) =~ s/\s*$optional_location//;
566 $line_number = '???';
568 $opts = { -msg => $message, -line => $line_number };
570 $message = $opts->{'-msg'};
574 $message =~ s/^\d+\s+//;
575 return if main::suppressed($message);
577 $self->SUPER::poderror($opts, @_);
579 $opts->{parameter} = "" unless $opts->{parameter};
581 # The variable parts of the message tend to be enclosed in '...',
582 # "....", or (...). Extract them and put them in an extra field,
583 # 'parameter'. This is trickier because the matching delimiter to a
584 # '(' is its mirror, and not itself. Text::Balanced could be used
586 while ($message =~ m/ \s* $optional_location ( [('"] )/xg) {
589 $delimiter = ')' if $delimiter eq '(';
591 # If there is no ending delimiter, don't consider it to be a
592 # variable part. Most likely it is a contraction like "Don't"
593 last unless $message =~ m/\G .+? \Q$delimiter/xg;
595 my $length = $+[0] - $start;
597 # Get the part up through the closing delimiter
598 my $special = substr($message, $start, $length);
599 $special =~ s/^\s+//; # No leading whitespace
601 # And add that variable part to the parameter, while removing it
602 # from the message. This isn't a foolproof way of finding the
603 # variable part. For example '(s)' can occur in e.g.,
605 if ($special ne '(s)') {
606 substr($message, $start, $length) = "";
607 pos $message = $start;
608 $opts->{-msg} = $message;
609 $opts->{parameter} .= " " if $opts->{parameter};
610 $opts->{parameter} .= $special;
614 # Extract any additional line number given. This is often the
615 # beginning location of something whereas the main line number gives
617 if ($message =~ /( $line_reference )/xi) {
619 while ($message =~ s/\s*\Q$line_ref//) {
620 $opts->{-msg} = $message;
621 $opts->{parameter} .= " " if $opts->{parameter};
622 $opts->{parameter} .= $line_ref;
626 Carp::carp("Couldn't extract line number from '$message'") if $message =~ /line \d+/;
627 push @{$problems{$filename{$addr}}{$message}}, $opts;
628 #push @{$problems{$self->get_filename}{$message}}, $opts;
631 sub check_encoding { # Does it need an =encoding statement?
632 my ($self, $paragraph, $line_num, $pod_para) = @_;
634 # Do nothing if there is an =encoding in the file, or if the line
635 # doesn't require an =encoding, or have already warned.
636 my $addr = Scalar::Util::refaddr $self;
637 return if $seen_encoding_cmd{$addr}
638 || $warned_encoding{$addr}
639 || $paragraph !~ /\P{ASCII}/;
641 $warned_encoding{$addr} = 1;
642 my ($file, $line) = $pod_para->file_line;
643 $self->poderror({ -line => $line, -file => $file,
644 -msg => $need_encoding
650 my ($self, $paragraph, $line_num, $pod_para) = @_;
651 $self->check_encoding($paragraph, $line_num, $pod_para);
653 $self->SUPER::verbatim($paragraph, $line_num, $pod_para);
655 my $addr = Scalar::Util::refaddr $self;
657 # Pick up the name, since the parent class doesn't in verbatim
658 # NAMEs; so treat as non-verbatim. The parent class only allows one
659 # paragraph in a NAME section, so if there is an extra blank line, it
660 # will trigger a message, but such a blank line is harmless, so skip
662 if ($in_NAME{$addr} && $paragraph =~ /\S/) {
663 $self->textblock($paragraph, $line_num, $pod_para);
666 my @lines = split /^/, $paragraph;
667 for my $i (0 .. @lines - 1) {
668 if ( my $encoding = $seen_encoding_cmd{$addr} ) {
670 $lines[$i] = Encode::decode($encoding, $lines[$i]);
672 $lines[$i] =~ s/\s+$//;
673 my $indent = $self->get_current_indent;
674 my $exceeds = length(Text::Tabs::expand($lines[$i]))
675 + $indent - $MAX_LINE_LENGTH;
676 next unless $exceeds > 0;
677 my ($file, $line) = $pod_para->file_line;
678 $self->poderror({ -line => $line + $i, -file => $file,
679 -msg => $line_length,
680 parameter => "+$exceeds (including " . ($indent - $INDENT) . " from =over's)",
686 my ($self, $paragraph, $line_num, $pod_para) = @_;
687 $self->check_encoding($paragraph, $line_num, $pod_para);
689 $self->SUPER::textblock($paragraph, $line_num, $pod_para);
691 my ($file, $line) = $pod_para->file_line;
692 my $addr = Scalar::Util::refaddr $self;
693 if ($in_NAME{$addr}) {
695 my $text = $self->interpolate($paragraph, $line_num);
696 if ($text =~ /^\s*(\S+?)\s*$/) {
698 $self->poderror({ -line => $line, -file => $file,
699 -msg => $missing_name_description,
704 $paragraph = join " ", split /^/, $paragraph;
706 # Matches something that looks like a file name, but is enclosed in
708 my $C_path_re = qr{ \b ( C<
709 # exclude various things that have slashes
710 # in them but aren't paths
712 (?: (?: s | qr | m) / ) # regexes
713 | \d+/\d+> # probable fractions
718 | - # File names don't begin with "-"
720 [-\w]+ (?: / [-\w]+ )+ (?: \. \w+ )? > )
723 # If looks like a reference to other documentation by containing the
724 # word 'See' and then a likely pod directive, warn.
725 while ($paragraph =~ m{
726 ( (?: \w+ \s+ )* ) # The phrase before, if any
730 ( [^<]*? ) # The not < excludes nested C<L<...
733 ( \s+ (?: under | in ) \s+ L< )?
735 my $prefix = $1 // "";
736 my $construct = $2; # The whole thing, like C<...>
739 my $trailing = $5; # After the whole thing ending in "L<"
741 # If the full phrase is something like, "you might see C<", or
742 # similar, it really isn't a reference to a link. The ones I saw
743 # all had the word "you" in them; and the "you" wasn't the
744 # beginning of a sentence.
745 if ($prefix !~ / \b you \b /x) {
747 # Now, find what the module or man page name within the
748 # construct would be if it actually has L<> syntax. If it
749 # doesn't have that syntax, will set the module to the entire
752 (?: [^|]+ \| )? # Optional arbitrary text ending
754 ( .+? ) # module, etc. name
755 (?: \/ .+ )? # target within module
759 if (! defined $trailing # not referring to something in another
761 && $interior !~ /$non_pods/
763 # C<> that look like files have their own message below, so
765 && $construct !~ /$C_path_re/g
767 # There can't be spaces (I think) in module names or man
769 && $module !~ / \s /x
771 # F<> that end in eg \.pl are almost certainly ok, as are
772 # those that look like a path with multiple "/" chars
775 && $interior !~ /\.\w+$/
776 && $interior !~ /\/.+\//)
779 $self->poderror({ -line => $line, -file => $file,
780 -msg => $see_not_linked,
781 parameter => $construct
786 while ($paragraph =~ m/$C_path_re/g) {
788 $self->poderror({ -line => $line, -file => $file,
789 -msg => $C_with_slash,
790 parameter => $construct
797 my ($self, $cmd, $paragraph, $line_num, $pod_para) = @_;
798 my $addr = Scalar::Util::refaddr $self;
800 $seen_pod_cmd{$addr}++;
802 elsif ($cmd eq "encoding") {
803 my ($file, $line) = $pod_para->file_line;
804 $seen_encoding_cmd{$addr} = $paragraph; # for later decoding
805 if ($command_count{$addr} != 1 && $seen_pod_cmd{$addr}) {
806 $self->poderror({ -line => $line, -file => $file,
807 -msg => $encoding_first
811 $self->check_encoding($paragraph, $line_num, $pod_para);
813 # Pod::Check treats all =items as linkable, but the bullet and
814 # numbered lists really aren't. So keep our own list. This has to be
815 # processed before SUPER is called so that the list is started before
816 # the rest of it gets parsed.
817 if ($cmd eq 'item') { # Not linkable if item begins with * or a digit
818 $linkable_item{$addr} = ($paragraph !~ / ^ \s*
820 | \d+ \.? (?: \$ | \s+ )
826 $self->SUPER::command($cmd, $paragraph, $line_num, $pod_para);
828 $command_count{$addr}++;
830 $in_NAME{$addr} = 0; # Will change to 1 below if necessary
831 $in_begin{$addr} = 0; # ibid
832 if ($cmd eq 'over') {
833 my $text = $self->interpolate($paragraph, $line_num);
834 my $indent = 4; # default
835 $indent = $1 if $text && $text =~ /^\s*(\d+)\s*$/;
836 push @{$indents{$addr}}, $indent;
837 $current_indent{$addr} += $indent;
839 elsif ($cmd eq 'back') {
840 if (@{$indents{$addr}}) {
841 $current_indent{$addr} -= pop @{$indents{$addr}};
844 # =back without corresponding =over, but should have
846 $current_indent{$addr} = 0;
849 elsif ($cmd =~ /^head/) {
850 if (! $in_begin{$addr}) {
852 # If a particular formatter, then this command doesn't really
854 $current_indent{$addr} = 0;
855 undef @{$indents{$addr}};
858 my $text = $self->interpolate($paragraph, $line_num);
859 $in_NAME{$addr} = 1 if $cmd eq 'head1'
860 && $text && $text =~ /^NAME\b/;
862 elsif ($cmd eq 'begin') {
863 $in_begin{$addr} = 1;
873 if ($_[0] && ($page = $_[0][1]{'-page'})) {
874 my $node = $_[0][1]{'-node'};
876 # If the hyperlink is to an interior node of another page, save it
877 # so that we can see if we need to parse normally skipped files.
878 $has_referred_to_node{$page} = 1 if $node;
880 # Ignore certain placeholder links in perldelta. Check if the
881 # link is page-level, and also check if to a node within the page
882 if ($self->name && $self->name eq "perldelta"
883 && ((grep { $page eq $_ } @perldelta_ignore_links)
885 && (grep { "$page/$node" eq $_ } @perldelta_ignore_links)
890 return $self->SUPER::hyperlink($_[0]);
897 $text =~ s/\s+$//s; # strip trailing whitespace
898 $text =~ s/\s+/ /gs; # collapse whitespace
899 my $addr = Scalar::Util::refaddr $self;
900 push(@{$linkable_nodes{$addr}}, $text) if
901 ! $current_indent{$addr}
902 || $linkable_item{$addr};
904 return $self->SUPER::node($_[0]);
907 sub get_current_indent {
908 return $INDENT + $current_indent{Scalar::Util::refaddr $_[0]};
912 return $filename{Scalar::Util::refaddr $_[0]};
916 my $linkables = $linkable_nodes{Scalar::Util::refaddr $_[0]};
917 return undef unless $linkables;
922 return $skip{Scalar::Util::refaddr $_[0]} // 0;
927 $skip{Scalar::Util::refaddr $self} = shift;
929 # If skipping, no need to keep the problems for it
930 delete $problems{$self->get_filename};
935 package Tie_Array_to_FH { # So printing actually goes to an array
941 my $array_ref = shift;
943 my $self = bless \do{ my $anonymous_scalar }, $class;
944 $array{Scalar::Util::refaddr $self} = $array_ref;
951 push @{$array{Scalar::Util::refaddr $self}}, @_;
957 my %filename_to_checker; # Map a filename to it's pod checker object
958 my %id_to_checker; # Map a checksum to it's pod checker object
959 my %nodes; # key is filename, values are nodes in that file.
960 my %nodes_first_word; # same, but value is first word of each node
961 my %valid_modules; # List of modules known to exist outside us.
962 my %digests; # checksums of files, whose names are the keys
963 my %filename_to_pod; # Map a filename to its pod NAME
964 my %files_with_unknown_issues;
965 my %files_with_fixes;
968 open $data_fh, '<:bytes', $known_issues or die "Can't open $known_issues";
970 my %counts; # For --counts param, count of each issue type
971 my %suppressed_files; # Files with at least one issue type to suppress
973 # This file is the data file for $0.
974 # There are three types of lines.
975 # Comment lines are white-space only or begin with a '#', like this one. Any
976 # changes you make to the comment lines will be lost when the file is
978 # Lines without tab characters are simply NAMES of pods that the program knows
979 # will have links to them and the program does not check if those links are
981 # All other lines should have three fields, each separated by a tab. The
982 # first field is the name of a pod; the second field is an error message
983 # generated by this program; and the third field is a count of how many
984 # known instances of that message there are in the pod. -1 means that the
985 # program can expect any number of this type of message.
991 while (<$data_fh>) { # Read the data base
993 next if /^\s*(?:#|$)/; # Skip comment and empty lines
996 if ($add_link) { # The issues are saved and later output unchanged
997 push @existing_issues, $_;
1001 # Keep track of counts of each issue type for each file
1002 my ($filename, $message, $count) = split /\t/;
1003 $known_problems{$filename}{$message} = $count;
1006 if ($count < 0) { # -1 means to suppress this issue type
1007 $suppressed_files{$filename} = $filename;
1010 $counts{$message} += $count;
1014 else { # Lines without a tab are modules known to be valid
1015 $valid_modules{$_} = 1
1021 $copy_fh = open_new($known_issues);
1023 # Check for basic sanity, and add each command line argument
1024 foreach my $module (@files) {
1025 die "\"$module\" does not look like a module or man page"
1026 # Must look like (A or A::B or A::B::C ..., or foo(3C)
1027 if $module !~ /^ (?: \w+ (?: :: \w+ )* | \w+ \( \d \w* \) ) $/x;
1028 $valid_modules{$module} = 1
1030 my_safer_print($copy_fh, $HEADER);
1031 foreach (sort { lc $a cmp lc $b } keys %valid_modules) {
1032 my_safer_print($copy_fh, $_, "\n");
1035 # The rest of the db file is output unchanged.
1036 my_safer_print($copy_fh, join "\n", @existing_issues, "");
1038 close_and_rename($copy_fh);
1044 foreach my $message (sort keys %counts) {
1045 $total += $counts{$message};
1046 note(Text::Tabs::expand("$counts{$message}\t$message"));
1048 note("-----\n" . Text::Tabs::expand("$total\tknown potential issues"));
1049 if (%suppressed_files) {
1050 note("\nFiles that have all messages of at least one type suppressed:");
1051 note(join ",", keys %suppressed_files);
1057 # Not really pods, but can look like them.
1058 my %excluded_files = (
1059 "lib/unicore/mktables" => 1,
1060 "Porting/perldelta_template.pod" => 1,
1067 # Convert to more generic form.
1068 foreach my $file (keys %excluded_files) {
1069 delete $excluded_files{$file};
1070 $excluded_files{canonicalize($file)} = 1;
1073 # re to match files that are to be parsed only if there is an internal link
1074 # to them. It does not include cpan, as whether those are parsed depends
1075 # on a switch. Currently, only perltoc and the stable perldelta.pod's
1076 # are included. The latter all have characters between 'perl' and
1077 # 'delta'. (Actually the currently developed one matches as well, but
1078 # is a duplicate of perldelta.pod, so can be skipped, so fine for it to
1080 my $only_for_interior_links_re = qr/ ^ pod\/perltoc.pod $
1082 unless ($do_deltas) {
1083 $only_for_interior_links_re = qr/$only_for_interior_links_re |
1084 \b perl \d+ delta \. pod \b
1091 sub output_thanks ($$$$) { # Called when an issue has been fixed
1092 my $filename = shift;
1093 my $original_count = shift;
1094 my $current_count = shift;
1095 my $message = shift;
1097 $files_with_fixes{$filename} = 1;
1099 my $fixed_count = $original_count - $current_count;
1100 my $a_problem = ($fixed_count == 1) ? "a problem" : "multiple problems";
1101 my $another_problem = ($fixed_count == 1) ? "another problem" : "another set of problems";
1105 There were $original_count occurrences (now $current_count) in this pod of type
1110 There are no longer any problems found in this pod!
1117 Thanks for fixing $a_problem!
1119 Now you must teach $0 that this was fixed.
1124 Thanks for fixing $another_problem.
1133 sub my_safer_print { # print, with error checking for outputting to db
1134 my ($fh, @lines) = @_;
1136 if (! print $fh @lines) {
1137 my $save_error = $!;
1139 die "Write failure: $save_error";
1143 sub extract_pod { # Extracts just the pod from a file
1144 my $filename = shift;
1148 # Arrange for the output of Pod::Parser to be collected in an array we can
1149 # look at instead of being printed
1150 tie *ALREADY_FH, 'Tie_Array_to_FH', \@pod;
1151 open my $in_fh, '<:bytes', $filename
1153 # The file should already have been opened once to get here, so if
1154 # fails, just die. It's possible that a transitory file containing a
1155 # pod would get here, but not bothering to add code for that very
1157 or die "Can't open '$filename': $!\n";
1159 my $parser = Pod::Parser->new();
1160 $parser->parse_from_filehandle($in_fh, *ALREADY_FH);
1163 return join "", @pod
1166 my $digest = Digest->new($digest_type);
1169 # If $_ is a pod file, add it to the lists and do other prep work.
1172 # Don't look at files in directories that are for tests, nor those
1173 # beginning with a dot
1174 if ($_ eq 't' || $_ =~ /^\../) {
1175 $File::Find::prune = 1;
1180 return if $_ =~ /^\./; # No hidden Unix files
1181 return if $_ =~ $non_pods;
1183 my $filename = $File::Find::name;
1185 # Assumes that the path separator is exactly one character.
1186 $filename =~ s/^\..//;
1188 return if $excluded_files{canonicalize($filename)};
1193 if (! open $candidate, '<:bytes', $_) {
1195 # If a transitory file was found earlier, the open could fail
1196 # legitimately and we just skip the file; also skip it if it is a
1197 # broken symbolic link, as it is probably just a build problem;
1198 # certainly not a file that we would want to check the pod of.
1199 # Otherwise fail it here and no reason to process it further.
1200 # (But the test count will be off too)
1201 ok(0, "Can't open '$filename': $!")
1202 if -e $filename && ! -l $filename;
1208 # If the file is a .pm or .pod, having any initial '=' on a line is
1209 # grounds for testing it. Otherwise, require a head1 NAME line to view it
1210 # as a potential pod
1211 if ($filename =~ /\.(?:pm|pod)/) {
1212 return unless $contents =~ /^=/m;
1214 return unless $contents =~ /^=head1 +NAME/m;
1217 # Here, we know that the file is a pod. Add it to the list of files
1218 # to check and create a checker object for it.
1220 push @files, $filename;
1221 my $checker = My::Pod::Checker->new($filename);
1222 $filename_to_checker{$filename} = $checker;
1224 # In order to detect duplicate pods and only analyze them once, we
1225 # compute checksums for the file, so don't have to do an exact
1226 # compare. Note that if the pod is just part of the file, the
1227 # checksums can differ for the same pod. That special case is handled
1228 # later, since if the checksums of the whole file are the same, that
1229 # case won't even come up. We don't need the checksums for files that
1230 # we parse only if there is a link to its interior, but we do need its
1231 # NAME, which is also retrieved in the code below.
1233 if ($filename =~ / (?: ^(cpan|lib|ext|dist)\/ )
1234 | $only_for_interior_links_re
1236 $digest->add($contents);
1237 $digests{$filename} = $digest->digest;
1239 # lib files aren't analyzed if they are duplicates of files copied
1240 # there from some other directory. But to determine this, we need
1241 # to know their NAMEs. We might as well find the NAME now while
1242 # the file is open. Similarly, cpan files aren't analyzed unless
1243 # we're analyzing all of them, or this particular file is linked
1244 # to by a file we are analyzing, and thus we will want to verify
1245 # that the target exists in it. We need to know at least the NAME
1246 # to see if it's worth analyzing, or so we can determine if a lib
1247 # file is a copy of a cpan one.
1248 if ($filename =~ m{ (?: ^ (?: cpan | lib ) / )
1249 | $only_for_interior_links_re
1251 if ($contents =~ /^=head1 +NAME.*/mg) {
1252 # The NAME is the first non-spaces on the line up to a
1253 # comma, dash or end of line. Otherwise, it's invalid and
1254 # this pod doesn't have a legal name that we're smart
1255 # enough to find currently. But the parser will later
1256 # find it if it thinks there is a legal name, and set the
1258 if ($contents =~ /\G # continue from the line after =head1
1259 \s* # ignore any empty lines
1260 ^ \s* ( \S+?) \s* (?: [,-] | $ )/mx) {
1262 $checker->name($name);
1263 $id_to_checker{$name} = $checker
1264 if $filename =~ m{^cpan/};
1267 elsif ($filename =~ m{^cpan/}) {
1268 $id_to_checker{$digests{$filename}} = $checker;
1274 } # End of is_pod_file()
1276 # Start of real code that isn't processing the command line (except the
1277 # db is read in above, as is processing of the --add_link option).
1278 # Here, @files contains list of files on the command line. If have any of
1279 # these, unconditionally test them, and show all the errors, even the known
1280 # ones, and, since not testing other pods, don't do cross-pod link tests.
1281 # (Could add extra code to do cross-pod tests for the ones in the list.)
1283 if ($has_input_files) {
1284 undef %known_problems;
1285 $do_upstream_cpan = $do_deltas = 1; # In case one of the inputs is one
1288 else { # No input files -- go find all the possibilities.
1290 $copy_fh = open_new($known_issues);
1291 note("Regenerating $known_issues, please be patient...");
1292 print $copy_fh $HEADER;
1295 # Move to the directory above us, but have to adjust @INC to account for
1297 s{^\.\./lib$}{lib} for @INC;
1298 chdir File::Spec->updir;
1300 # And look in this directory and all its subdirectories
1301 find( \&is_pod_file, '.');
1303 # Add ourselves to the test
1304 push @files, "t/porting/podcheck.t";
1307 # Now we know how many tests there will be.
1308 plan (tests => scalar @files) if ! $regen;
1311 # Sort file names so we get consistent results, and to put cpan last,
1312 # preceeded by the ones that we don't generally parse. This is because both
1313 # these classes are generally parsed only if there is a link to the interior
1314 # of them, and we have to parse all others first to guarantee that they don't
1315 # have such a link. 'lib' files come just before these, as some of these are
1316 # duplicates of others. We already have figured this out when gathering the
1317 # data as a special case for all such files, but this, while unnecessary,
1318 # puts the derived file last in the output. 'readme' files come before those,
1319 # as those also could be duplicates of others, which are considered the
1320 # primary ones. These currently aren't figured out when gathering data, so
1322 @files = sort { if ($a =~ /^cpan/) {
1323 return 1 if $b !~ /^cpan/;
1326 elsif ($b =~ /^cpan/) {
1329 elsif ($a =~ /$only_for_interior_links_re/) {
1330 return 1 if $b !~ /$only_for_interior_links_re/;
1333 elsif ($b =~ /$only_for_interior_links_re/) {
1336 elsif ($a =~ /^lib/) {
1337 return 1 if $b !~ /^lib/;
1340 elsif ($b =~ /^lib/) {
1342 } elsif ($a =~ /\breadme\b/i) {
1343 return 1 if $b !~ /\breadme\b/i;
1346 elsif ($b =~ /\breadme\b/i) {
1350 return lc $a cmp lc $b;
1355 # Now go through all the files and parse them
1356 foreach my $filename (@files) {
1358 note("parsing $filename") if DEBUG;
1360 # We may have already figured out some things in the process of generating
1361 # the file list. If so, have a $checker object already. But if not,
1363 my $checker = $filename_to_checker{$filename};
1365 $checker = My::Pod::Checker->new($filename);
1366 $filename_to_checker{$filename} = $checker;
1369 # We have set the name in the checker object if there is a possibility
1370 # that no further parsing is necessary, but otherwise do the parsing now.
1371 if (! $checker->name) {
1373 $checker->parse_from_file($filename, undef);
1376 if ($checker->num_errors() < 0) { # Returns negative if not a pod
1377 $checker->set_skip("$filename is not a pod");
1381 # Here, is a pod. See if it is one that has already been tested,
1382 # or should be tested under another directory. Use either its NAME
1383 # if it has one, or a checksum if not.
1384 my $name = $checker->name;
1391 my $digest = Digest->new($digest_type);
1392 $digest->add(extract_pod($filename));
1393 $id = $digest->digest;
1396 # If there is a match for this pod with something that we've already
1397 # processed, don't process it, and output why.
1399 if (defined ($prior_checker = $id_to_checker{$id})
1400 && $prior_checker != $checker) # Could have defined the checker
1401 # earlier without pursuing it
1404 # If the pods are identical, then it's just a copy, and isn't an
1405 # error. First use the checksums we have already computed to see
1406 # if the entire files are identical, which means that the pods are
1408 my $prior_filename = $prior_checker->get_filename;
1410 || ($digests{$prior_filename}
1411 && $digests{$filename}
1412 && $digests{$prior_filename} eq $digests{$filename}));
1414 # If they differ, it could be that the files differ for some
1415 # reason, but the pods they contain are identical. Extract the
1416 # pods and do the comparisons on just those.
1417 if (! $same && $name) {
1418 $same = extract_pod($prior_filename) eq extract_pod($filename);
1422 $checker->set_skip("The pod of $filename is a duplicate of "
1423 . "the pod for $prior_filename");
1424 } elsif ($prior_filename =~ /\breadme\b/i) {
1425 $checker->set_skip("$prior_filename is a README apparently for $filename");
1426 } elsif ($filename =~ /\breadme\b/i) {
1427 $checker->set_skip("$filename is a README apparently for $prior_filename");
1428 } elsif (! $do_upstream_cpan && $filename =~ /^cpan/) {
1429 $checker->set_skip("CPAN is upstream for $filename");
1430 } else { # Here have two pods with identical names that differ
1431 $prior_checker->poderror(
1432 { -msg => $duplicate_name,
1434 parameter => "'$filename' also has NAME '$name'"
1437 { -msg => $duplicate_name,
1439 parameter => "'$prior_filename' also has NAME '$name'"
1442 # Changing the names helps later.
1443 $prior_checker->name("$name version arbitrarily numbered 1");
1444 $checker->name("$name version arbitrarily numbered 2");
1447 # In any event, don't process this pod that has the same name as
1453 $id_to_checker{$id} = $checker;
1455 my $parsed_for_links = ", but parsed for its interior links";
1456 if ((! $do_upstream_cpan && $filename =~ /^cpan/)
1457 || $filename =~ $only_for_interior_links_re)
1459 if ($filename =~ /^cpan/) {
1460 $checker->set_skip("CPAN is upstream for $filename");
1462 elsif ($filename =~ /perl\d+delta/ && ! $do_deltas) {
1463 $checker->set_skip("$filename is a stable perldelta");
1465 elsif ($filename =~ /perltoc/) {
1466 $checker->set_skip("$filename dependent on component pods");
1469 croak("Unexpected file '$filename' encountered that has parsing for interior-linking only");
1472 if ($name && $has_referred_to_node{$name}) {
1473 $checker->set_skip($checker->get_skip() . $parsed_for_links);
1477 # Need a name in order to process it, because not meaningful
1478 # otherwise, and also can't test links to this without a name.
1479 if (!defined $name) {
1480 $checker->poderror( { -msg => $no_name,
1486 # For skipped files, just get its NAME
1488 if (($skip = $checker->get_skip()) && $skip !~ /$parsed_for_links/)
1490 $checker->node($name) if $name;
1493 $checker->parse_from_file($filename, undef) if ! $parsed;
1496 # Go through everything in the file that could be an anchor that
1497 # could be a link target. Count how many there are of the same name.
1498 foreach my $node ($checker->linkable_nodes) {
1499 next if ! $node; # Can be empty is like '=item *'
1500 if (exists $nodes{$name}{$node}) {
1501 $nodes{$name}{$node}++;
1504 $nodes{$name}{$node} = 1;
1507 # Experiments have shown that cpan search can figure out the
1508 # target of a link even if the exact wording is incorrect, as long
1509 # as the first word is. This happens frequently in perlfunc.pod,
1510 # where the link will be just to the function, but the target
1511 # entry also includes parameters to the function.
1512 my $first_word = $node;
1513 if ($first_word =~ s/^(\S+)\s+\S.*/$1/) {
1514 $nodes_first_word{$name}{$first_word} = $node;
1517 $filename_to_pod{$filename} = $name;
1521 # Here, all files have been parsed, and all links and link targets are stored.
1522 # Now go through the files again and see which don't have matches.
1523 if (! $has_input_files) {
1524 foreach my $filename (@files) {
1525 next if $filename_to_checker{$filename}->get_skip;
1526 my $checker = $filename_to_checker{$filename};
1527 foreach my $link ($checker->hyperlink) {
1528 my $linked_to_page = $link->[1]->page;
1529 next unless $linked_to_page; # intra-file checks are handled by std
1532 # Initialize the potential message.
1533 my %problem = ( -msg => $broken_link,
1534 -line => $link->[0],
1535 parameter => "to \"$linked_to_page\"",
1538 # See if we have found the linked-to_file in our parse
1539 if (exists $nodes{$linked_to_page}) {
1540 my $node = $link->[1]->node;
1542 # If link is only to the page-level, already have it
1545 # Transform pod language to what we are expecting
1546 $node =~ s,E<sol>,/,g;
1547 $node =~ s/E<verbar>/|/g;
1549 # If link is to a node that exists in the file, is ok
1550 if ($nodes{$linked_to_page}{$node}) {
1552 # But if the page has multiple targets with the same name,
1553 # it's ambiguous which one this should be to.
1554 if ($nodes{$linked_to_page}{$node} > 1) {
1555 $problem{-msg} = $multiple_targets;
1556 $problem{parameter} = "in $linked_to_page that $node could be pointing to";
1557 $checker->poderror(\%problem);
1559 } elsif (! $nodes_first_word{$linked_to_page}{$node}) {
1561 # Here the link target was not found, either exactly or to
1562 # the first word. Is an error.
1563 $problem{parameter} =~ s,"$,/$node",;
1564 $checker->poderror(\%problem);
1567 } # Linked-to-file not in parse; maybe is in exception list
1568 elsif (! exists $valid_modules{$link->[1]->page}) {
1570 # Here, is a link to a target that we can't find. Check if
1571 # there is an internal link on the page with the target name.
1572 # If so, it could be that they just forgot the initial '/'
1573 # But perldelta is handled specially: only do this if the
1574 # broken link isn't one of the known bad ones (that are
1575 # placemarkers and should be removed for the final)
1576 my $NAME = $filename_to_pod{$filename};
1577 if (! defined $NAME) {
1578 $checker->poderror(\%problem);
1581 if ($nodes{$NAME}{$linked_to_page}) {
1582 $problem{-msg} = $broken_internal_link;
1584 $checker->poderror(\%problem);
1591 # If regenerating the data file, start with the modules for which we don't
1594 foreach (sort { lc $a cmp lc $b } keys %valid_modules) {
1595 my_safer_print($copy_fh, $_, "\n");
1599 # Now ready to output the messages.
1600 foreach my $filename (@files) {
1601 my $test_name = "POD of $filename";
1602 my $canonical = canonicalize($filename);
1604 my $skip = $filename_to_checker{$filename}->get_skip // "";
1607 foreach my $message ( sort keys %{$problems{$filename}}) {
1610 # Preserve a negative setting.
1611 if ($known_problems{$canonical}{$message}
1612 && $known_problems{$canonical}{$message} < 0)
1614 $count = $known_problems{$canonical}{$message};
1617 $count = @{$problems{$filename}{$message}};
1619 my_safer_print($copy_fh, canonicalize($filename) . "\t$message\t$count\n");
1624 skip($skip, 1) if $skip;
1628 my $total_known = 0;
1629 foreach my $message ( sort keys %{$problems{$filename}}) {
1630 $known_problems{$canonical}{$message} = 0
1631 if ! $known_problems{$canonical}{$message};
1632 my $diagnostic = "";
1633 my $problem_count = scalar @{$problems{$filename}{$message}};
1634 $total_known += $problem_count;
1635 next if $known_problems{$canonical}{$message} < 0;
1636 if ($problem_count > $known_problems{$canonical}{$message}) {
1638 # Here we are about to output all the messages for this type,
1639 # subtract back this number we previously added in.
1640 $total_known -= $problem_count;
1642 $diagnostic .= $indent . $message;
1643 if ($problem_count > 2) {
1644 $diagnostic .= " ($problem_count occurrences)";
1646 foreach my $problem (@{$problems{$filename}{$message}}) {
1647 $diagnostic .= " " if $problem_count == 1;
1648 $diagnostic .= "\n$indent$indent";
1649 $diagnostic .= "$problem->{parameter}" if $problem->{parameter};
1650 $diagnostic .= " near line $problem->{-line}";
1651 $diagnostic .= " $problem->{comment}" if $problem->{comment};
1653 $diagnostic .= "\n";
1654 $files_with_unknown_issues{$filename} = 1;
1655 } elsif ($problem_count < $known_problems{$canonical}{$message}) {
1656 $diagnostic = output_thanks($filename, $known_problems{$canonical}{$message}, $problem_count, $message);
1658 push @diagnostics, $diagnostic if $diagnostic;
1661 # The above loop has output messages where there are current potential
1662 # issues. But it misses where there were some that have been entirely
1663 # fixed. For those, we need to look through the old issues
1664 foreach my $message ( sort keys %{$known_problems{$canonical}}) {
1665 next if $problems{$filename}{$message};
1666 next if ! $known_problems{$canonical}{$message};
1667 next if $known_problems{$canonical}{$message} < 0; # Preserve negs
1668 my $diagnostic = output_thanks($filename, $known_problems{$canonical}{$message}, 0, $message);
1669 push @diagnostics, $diagnostic if $diagnostic;
1672 my $output = "POD of $filename";
1673 $output .= ", excluding $total_known not shown known potential problems"
1675 ok(@diagnostics == 0, $output);
1677 note(join "", @diagnostics,
1678 "See end of this test output for your options on silencing this");
1684 run this test script by hand, using the following formula (on
1685 Un*x-like machines):
1687 ./perl -I../lib porting/podcheck.t --regen
1690 if (%files_with_unknown_issues) {
1691 my $were_count_files = scalar keys %files_with_unknown_issues;
1692 $were_count_files = ($were_count_files == 1)
1693 ? "was $were_count_files file"
1694 : "were $were_count_files files";
1695 my $message = <<EOF;
1697 HOW TO GET THIS .t TO PASS
1699 There $were_count_files that had new potential problems identified.
1700 Some of them may be real, and some of them may be false positives because
1701 this program isn't as smart as it likes to think it is. You can teach this
1702 program to ignore the issues it has identified, and hence pass, by doing the
1705 1) If a problem is about a link to an unknown module or man page that
1706 you know exists, re-run the command something like:
1707 ./perl -I../lib porting/podcheck.t --add_link MODULE man_page ...
1708 (MODULEs should look like Foo::Bar, and man_pages should look like
1709 bar(3c); don't do this for a module or man page that you aren't sure
1710 about; instead treat as another type of issue and follow the
1711 instructions below.)
1713 2) For other issues, decide if each should be fixed now or not. Fix the
1714 ones you decided to, and rerun this test to verify that the fixes
1717 3) If there remain false positive or problems that you don't plan to fix right
1720 That should cause all current potential problems to be accepted by
1721 the program, so that the next time it runs, they won't be flagged.
1723 if (%files_with_fixes) {
1724 $message .= " This step will also take care of the files that have fixes in them\n";
1728 For a few files, such as perltoc, certain issues will always be
1729 expected, and more of the same will be added over time. For those,
1730 before you do the regen, you can edit
1732 and find the entry for the module's file and specific error message,
1733 and change the count of known potential problems to -1.
1737 } elsif (%files_with_fixes) {
1739 To teach this test script that the potential problems have been fixed,
1746 chdir $original_dir || die "Can't change directories to $original_dir";
1747 close_and_rename($copy_fh);