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Kha/Backends/Kinc-hxcpp/khacpp/project/thirdparty/pcre2-10.42-8/132html
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314
Kha/Backends/Kinc-hxcpp/khacpp/project/thirdparty/pcre2-10.42-8/132html
vendored
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#! /usr/bin/perl -w
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# Script to turn PCRE2 man pages into HTML
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# Subroutine to handle font changes and other escapes
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sub do_line {
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my($s) = $_[0];
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$s =~ s/</</g; # Deal with < and >
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$s =~ s/>/>/g;
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$s =~ s"\\fI(.*?)\\f[RP]"<i>$1</i>"g;
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$s =~ s"\\fB(.*?)\\f[RP]"<b>$1</b>"g;
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$s =~ s"\\e"\\"g;
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$s =~ s/(?<=Copyright )\(c\)/©/g;
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$s;
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}
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# Subroutine to ensure not in a paragraph
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sub end_para {
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if ($inpara)
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{
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print TEMP "</PRE>\n" if ($inpre);
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print TEMP "</P>\n";
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}
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$inpara = $inpre = 0;
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$wrotetext = 0;
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}
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# Subroutine to start a new paragraph
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sub new_para {
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&end_para();
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print TEMP "<P>\n";
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$inpara = 1;
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}
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# Main program
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$innf = 0;
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$inpara = 0;
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$inpre = 0;
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$wrotetext = 0;
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$toc = 0;
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$ref = 1;
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while ($#ARGV >= 0 && $ARGV[0] =~ /^-/)
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{
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$toc = 1 if $ARGV[0] eq "-toc";
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shift;
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}
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# Initial output to STDOUT
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print <<End ;
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<html>
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<head>
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<title>$ARGV[0] specification</title>
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</head>
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<body bgcolor="#FFFFFF" text="#00005A" link="#0066FF" alink="#3399FF" vlink="#2222BB">
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<h1>$ARGV[0] man page</h1>
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<p>
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Return to the <a href="index.html">PCRE2 index page</a>.
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</p>
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<p>
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This page is part of the PCRE2 HTML documentation. It was generated
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automatically from the original man page. If there is any nonsense in it,
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please consult the man page, in case the conversion went wrong.
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<br>
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End
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print "<ul>\n" if ($toc);
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open(TEMP, ">/tmp/$$") || die "Can't open /tmp/$$ for output\n";
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while (<STDIN>)
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{
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# Handle lines beginning with a dot
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if (/^\./)
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{
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# Some of the PCRE2 man pages used to contain instances of .br. However,
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# they should have all been removed because they cause trouble in some
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# (other) automated systems that translate man pages to HTML. Complain if
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# we find .br or .in (another macro that is deprecated).
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if (/^\.br/ || /^\.in/)
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{
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print STDERR "\n*** Deprecated macro encountered - rewrite needed\n";
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print STDERR "*** $_\n";
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die "*** Processing abandoned\n";
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}
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# Instead of .br, relevant "literal" sections are enclosed in .nf/.fi.
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elsif (/^\.nf/)
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{
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$innf = 1;
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}
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elsif (/^\.fi/)
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{
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$innf = 0;
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}
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# Handling .sp is subtle. If it is inside a literal section, do nothing if
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# the next line is a non literal text line; similarly, if not inside a
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# literal section, do nothing if a literal follows, unless we are inside
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# a .nf/.fi section or about to enter one. The point being that the <pre>
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# and </pre> that delimit literal sections will do the spacing. Always skip
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# if no previous output.
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elsif (/^\.sp/)
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{
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if ($wrotetext)
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{
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$_ = <STDIN>;
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if ($inpre)
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{
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print TEMP "\n" if (/^[\s.]/);
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}
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else
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{
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print TEMP "<br>\n<br>\n" if ($innf || /^\.nf/ || !/^[\s.]/);
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}
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redo; # Now process the lookahead line we just read
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}
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}
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elsif (/^\.TP/ || /^\.PP/ || /^\.P/)
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{
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&new_para();
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}
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elsif (/^\.SH\s*("?)(.*)\1/)
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{
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# Ignore the NAME section
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if ($2 =~ /^NAME\b/)
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{
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<STDIN>;
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next;
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}
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&end_para();
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my($title) = &do_line($2);
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if ($toc)
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{
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printf("<li><a name=\"TOC%d\" href=\"#SEC%d\">$title</a>\n",
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$ref, $ref);
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printf TEMP ("<br><a name=\"SEC%d\" href=\"#TOC1\">$title</a><br>\n",
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$ref);
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$ref++;
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}
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else
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{
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print TEMP "<br><b>\n$title\n</b><br>\n";
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}
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}
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elsif (/^\.SS\s*("?)(.*)\1/)
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{
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&end_para();
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my($title) = &do_line($2);
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print TEMP "<br><b>\n$title\n</b><br>\n";
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}
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elsif (/^\.B\s*(.*)/)
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{
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&new_para() if (!$inpara);
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$_ = &do_line($1);
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s/"(.*?)"/$1/g;
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print TEMP "<b>$_</b>\n";
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$wrotetext = 1;
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}
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elsif (/^\.I\s*(.*)/)
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{
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&new_para() if (!$inpara);
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$_ = &do_line($1);
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s/"(.*?)"/$1/g;
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print TEMP "<i>$_</i>\n";
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$wrotetext = 1;
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}
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# A comment that starts "HREF" takes the next line as a name that
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# is turned into a hyperlink, using the text given, which might be
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# in a special font. If it ends in () or (digits) or punctuation, they
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# aren't part of the link.
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elsif (/^\.\\"\s*HREF/)
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{
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$_=<STDIN>;
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chomp;
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$_ = &do_line($_);
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$_ =~ s/\s+$//;
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$_ =~ /^(?:<.>)?([^<(]+)(?:\(\))?(?:<\/.>)?(?:\(\d+\))?[.,;:]?$/;
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print TEMP "<a href=\"$1.html\">$_</a>\n";
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}
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# A comment that starts "HTML" inserts literal HTML
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elsif (/^\.\\"\s*HTML\s*(.*)/)
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{
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print TEMP $1;
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}
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# A comment that starts < inserts that HTML at the end of the
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# *next* input line - so as not to get a newline between them.
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elsif (/^\.\\"\s*(<.*>)/)
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{
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my($markup) = $1;
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$_=<STDIN>;
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chomp;
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$_ = &do_line($_);
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$_ =~ s/\s+$//;
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print TEMP "$_$markup\n";
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}
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# A comment that starts JOIN joins the next two lines together, with one
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# space between them. Then that line is processed. This is used in some
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# displays where two lines are needed for the "man" version. JOINSH works
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# the same, except that it assumes this is a shell command, so removes
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# continuation backslashes.
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elsif (/^\.\\"\s*JOIN(SH)?/)
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{
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my($one,$two);
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$one = <STDIN>;
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$two = <STDIN>;
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$one =~ s/\s*\\e\s*$// if (defined($1));
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chomp($one);
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$two =~ s/^\s+//;
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$_ = "$one $two";
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redo; # Process the joined lines
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}
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# .EX/.EE are used in the pcre2demo page to bracket the entire program,
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# which is unmodified except for turning backslash into "\e".
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elsif (/^\.EX\s*$/)
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{
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print TEMP "<PRE>\n";
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while (<STDIN>)
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{
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last if /^\.EE\s*$/;
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s/\\e/\\/g;
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s/&/&/g;
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s/</</g;
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s/>/>/g;
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print TEMP;
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}
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}
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# Ignore anything not recognized
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next;
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}
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# Line does not begin with a dot. Replace blank lines with new paragraphs
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if (/^\s*$/)
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{
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&end_para() if ($wrotetext);
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next;
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}
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# Convert fonts changes and output an ordinary line. Ensure that indented
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# lines are marked as literal.
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$_ = &do_line($_);
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&new_para() if (!$inpara);
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if (/^\s/)
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{
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if (!$inpre)
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{
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print TEMP "<pre>\n";
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$inpre = 1;
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}
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}
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elsif ($inpre)
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{
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print TEMP "</pre>\n";
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$inpre = 0;
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}
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# Add <br> to the end of a non-literal line if we are within .nf/.fi
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$_ .= "<br>\n" if (!$inpre && $innf);
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print TEMP;
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$wrotetext = 1;
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}
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# The TOC, if present, will have been written - terminate it
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print "</ul>\n" if ($toc);
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# Copy the remainder to the standard output
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close(TEMP);
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open(TEMP, "/tmp/$$") || die "Can't open /tmp/$$ for input\n";
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print while (<TEMP>);
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print <<End ;
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<p>
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Return to the <a href="index.html">PCRE2 index page</a>.
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</p>
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End
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close(TEMP);
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unlink("/tmp/$$");
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# End
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