Dollar doubling feature

[subdirmk.git] / tests / filter / extract-doctest

diff --git a/tests/filter/extract-doctest b/tests/filter/extract-doctest
index 10dd42a3d8b5f5bc061551db40a4aed6ebbac9b1..b63f309e87f5875465399c15d2fd560298299a69 100755 (executable)
--- a/tests/filter/extract-doctest
+++ b/tests/filter/extract-doctest
@@ -61,6 +61,8 @@ while (<>) {
            confess "unk rhs $_ ?";
        }
        $e->{CQ} = $in_changequote;
+       # adhoc: rely on this specific section title
+       $e->{DD} = $csection =~ m{^while dollar[- ]doubling}i;
     } else {
        confess "$_ ?";
     }
@@ -130,7 +132,26 @@ sub writeout ($) {
     oh "# doctest starts $dir_prefix\n";
     write_permode($dir_prefix,
                  '','','', 'normal',
-                sub { !$_[0]{CQ} } );
+                sub { !$_[0]{DD} && !$_[0]{CQ} } );
+    write_permode($dir_prefix,
+                 '&$+', '&$-', "\n",
+                 'dollar doubling',
+                 sub {
+                     my ($e) = @_;
+                     return 0 if $e->{CQ};
+                     return $e->{DD} || !grep {
+                         # If there are two entries with the same In,
+                         # use only the one from the `while dollar
+                         # doubling' section.  So entries there override
+                         # entries in the rest o the file.
+                         $_ ne $e && $_->{In} eq $e->{In}
+                     } @exp;
+                 },
+                 sub {
+                     $_=$_[0];
+                     s/\$/\$\$/g unless $_[1]{DD};
+                     $_;
+                 } );
     write_permode($dir_prefix,
                  "&:changequote NEWQUOTE\n",
                  "NEWQUOTE:changequote &\n",