Add scoping rules to Vale's configuration

Author: jdkato

.vale.ini

@@ -1,7 +1,7 @@
 StylesPath = ci/vale
 MinAlertLevel = suggestion
 
-[*.{md,html}]
+[*.md]
 BasedOnStyles = CockroachDB
 
 vale.GenderBias = YES
@@ -10,3 +10,24 @@ vale.Redundancy = YES
 vale.Repetition = YES
 vale.Uncomparables = YES
 CockroachDB.Hyperbolic = NO
+
+# Custom block scoping (see the regex101 links for unit tests):
+# 
+# Rule #1 (https://regex101.com/r/TJQLJ4/2/tests): Ignore `{%comment%}` blocks. This
+# keeps Vale from flagging 'endcomment' as a spelling mistake.
+#
+# Rule #2 (https://regex101.com/r/7VA2lV/2/tests): Ignore `<div>`s and `<section>`s 
+# that specify `markdown="1"` since it isn't supported by Vale's Markdown 
+# parser (https://github.com/russross/blackfriday/issues/184).
+# 
+# Rule #3 (https://regex101.com/r/NxFflU/1/tests): Ignore `{% include %}`-codeblock
+# pairs.
+BlockIgnores = (?s)({%\s?comment\s?%}.+?{%\s?endcomment\s?%}), \
+(?s)(<(?:div|section)[^>]*markdown="1"[^>]*>.*?</(?:div|section)>), \
+(?s)((?: *{% include [^%]+ %}\n)? *~~~.*?~~~~?)
+
+# Custom inline scoping (see the regex101 links for unit tests):
+# 
+# Rule #1 (https://regex101.com/r/cTiITH/2/tests): Ignore `{% include %}`s, which
+# contain file paths.
+TokenIgnores = ({%\s?include\s? {{ [^}]+ }}[^%]+\s?%})