From 0824ef377f9cdfae13b2c702d1bc2b83f048c2d9 Mon Sep 17 00:00:00 2001
From: Wilson Snyder <wsnyder@wsnyder.org>
Date: Fri, 9 Dec 2022 20:32:09 -0500
Subject: [PATCH] wip

---
 test_regress/t/t_dist_docs_style.pl | 65 +++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100755 test_regress/t/t_dist_docs_style.pl

diff --git a/test_regress/t/t_dist_docs_style.pl b/test_regress/t/t_dist_docs_style.pl
new file mode 100755
index 000000000..0cda99082
--- /dev/null
+++ b/test_regress/t/t_dist_docs_style.pl
@@ -0,0 +1,65 @@
+#!/usr/bin/env perl
+if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
+# DESCRIPTION: Verilator: Primitive C++ style checker
+#
+# Copyright 2022 by Wilson Snyder. This program is free software; you
+# can redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
+
+scenarios(dist => 1);
+
+my $root = "..";
+
+### Must trim output before and after our file list
+my %files = %{get_source_files($root)};
+
+foreach my $file (sort keys %files) {
+    my $filename = "$root/$file";
+    next if !-f $filename;  # git file might be deleted but not yet staged
+    next unless $file =~ /\.rst$/;
+
+    my $contents = file_contents($filename);
+
+    checkPattern($filename, $contents,
+                 qr/.*(?<!ref):\`[^`]+\n/,
+                 "tag:`...` should not be split between lines");
+}
+
+ok(1);
+1;
+
+sub get_source_files {
+    my $root = shift;
+    my $git_files = `cd $root && git ls-files`;
+    print "MF $git_files\n" if $Self->{verbose};
+    my %files;
+    foreach my $file (split /\s+/, $git_files) {
+        next if $file eq '';
+        $files{$file} |= 1;
+    }
+    return \%files;
+}
+
+sub checkPattern {
+    my $filename = shift;
+    my $contents = shift;
+    my $pattern = shift;
+    my $message = shift;
+
+    my $offset = 0;
+    my $buffer = $contents;
+    while ($buffer =~ s/.*?^($pattern)//sm) {
+        my $lineno = offset_to_lineno($contents, $offset + $-[-1]);
+        $offset += $+[1];
+        error("$filename:$lineno: $message");
+    }
+}
+
+sub offset_to_lineno {
+    my $contents = shift;
+    my $offset = shift;
+    my $count = (substr $contents, 0, $offset) =~ tr/\n//;
+    return $count + 1;
+}