diff --git a/regression_testing/cases/github-cases/case-729a.conf b/regression_testing/cases/github-cases/case-729a.conf
new file mode 100755
index 0000000..471cfa1
--- /dev/null
+++ b/regression_testing/cases/github-cases/case-729a.conf
@@ -0,0 +1,2 @@
+# Sample config for 729a.
+strict-tags-attributes: yes
\ No newline at end of file
diff --git a/regression_testing/cases/github-cases/case-729a@2.html b/regression_testing/cases/github-cases/case-729a@2.html
new file mode 100755
index 0000000..ea80407
--- /dev/null
+++ b/regression_testing/cases/github-cases/case-729a@2.html
@@ -0,0 +1,25 @@
+
+
+
+
+ Alignment
+
+
+
+
+
+
+
diff --git a/regression_testing/cases/github-cases/case-729b.conf b/regression_testing/cases/github-cases/case-729b.conf
new file mode 100755
index 0000000..499b2c7
--- /dev/null
+++ b/regression_testing/cases/github-cases/case-729b.conf
@@ -0,0 +1,2 @@
+# Sample config for 729b.
+strict-tags-attributes: no
diff --git a/regression_testing/cases/github-cases/case-729b@1.html b/regression_testing/cases/github-cases/case-729b@1.html
new file mode 100755
index 0000000..ea80407
--- /dev/null
+++ b/regression_testing/cases/github-cases/case-729b@1.html
@@ -0,0 +1,25 @@
+
+
+
+
+ Alignment
+
+
+
+
+
+
+
diff --git a/regression_testing/cases/github-expects/case-729a.txt b/regression_testing/cases/github-expects/case-729a.txt
new file mode 100644
index 0000000..d87b564
--- /dev/null
+++ b/regression_testing/cases/github-expects/case-729a.txt
@@ -0,0 +1,19 @@
+line 17 column 13 - Error: attribute "valign" not allowed for HTML5
+line 18 column 17 - Error: attribute "width" not allowed for HTML5
+line 18 column 17 - Error: | attribute "align" not allowed for HTML5
+Info: Document content looks like HTML5
+Tidy found 0 warnings and 3 errors!
+
+This document has errors that must be fixed before
+using HTML Tidy to generate a tidied up version.
+
+About HTML Tidy: https://github.com/htacg/tidy-html5
+Bug reports and comments: https://github.com/htacg/tidy-html5/issues
+Official mailing list: https://lists.w3.org/Archives/Public/public-htacg/
+Latest HTML specification: http://dev.w3.org/html5/spec-author-view/
+Validate your HTML documents: http://validator.w3.org/nu/
+Lobby your company to join the W3C: http://www.w3.org/Consortium
+
+Do you speak a language other than English, or a different variant of
+English? Consider helping us to localize HTML Tidy. For details please see
+https://github.com/htacg/tidy-html5/blob/master/README/LOCALIZE.md
diff --git a/regression_testing/cases/github-expects/case-729b.html b/regression_testing/cases/github-expects/case-729b.html
new file mode 100644
index 0000000..776bf5f
--- /dev/null
+++ b/regression_testing/cases/github-expects/case-729b.html
@@ -0,0 +1,21 @@
+
+
+
+
+Alignment
+
+
+
+
+
diff --git a/regression_testing/cases/github-expects/case-729b.txt b/regression_testing/cases/github-expects/case-729b.txt
new file mode 100644
index 0000000..65cb35a
--- /dev/null
+++ b/regression_testing/cases/github-expects/case-729b.txt
@@ -0,0 +1,17 @@
+line 18 column 17 - Warning: | attribute "align" not allowed for HTML5
+line 17 column 13 - Warning: |
attribute "valign" not allowed for HTML5
+line 18 column 17 - Warning: attribute "width" not allowed for HTML5
+line 18 column 17 - Warning: | attribute "align" not allowed for HTML5
+Info: Document content looks like HTML5
+Tidy found 4 warnings and 0 errors!
+
+About HTML Tidy: https://github.com/htacg/tidy-html5
+Bug reports and comments: https://github.com/htacg/tidy-html5/issues
+Official mailing list: https://lists.w3.org/Archives/Public/public-htacg/
+Latest HTML specification: http://dev.w3.org/html5/spec-author-view/
+Validate your HTML documents: http://validator.w3.org/nu/
+Lobby your company to join the W3C: http://www.w3.org/Consortium
+
+Do you speak a language other than English, or a different variant of
+English? Consider helping us to localize HTML Tidy. For details please see
+https://github.com/htacg/tidy-html5/blob/master/README/LOCALIZE.md
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