Specify dropping of initial/final whitespace in setext heading content.

Closes #461.

1 files changed, 16 insertions, 2 deletions

diff --git a/spec.txt b/spec.txt
index 3d29369..fc5a9ab 100644
--- a/spec.txt
+++ b/spec.txt
@@ -827,7 +827,7 @@ Contents are parsed as inlines:
 ````````````````````````````````
 
 
-Leading and trailing blanks are ignored in parsing inline content:
+Leading and trailing [whitespace] is ignored in parsing inline content:
 
 ```````````````````````````````` example
 #                  foo                     
@@ -1026,6 +1026,20 @@ baz*
 baz</em></h1>
 ````````````````````````````````
 
+The contents are the result of parsing the headings's raw
+content as inlines.  The heading's raw content is formed by
+concatenating the lines and removing initial and final
+[whitespace].
+
+```````````````````````````````` example
+  Foo *bar
+baz*→
+====
+.
+<h1>Foo <em>bar
+baz</em></h1>
+````````````````````````````````
+
 
 The underlining can be any length:
 
@@ -5488,10 +5502,10 @@ Thus, for example, in
 <p><code>hi</code>lo`</p>
 ````````````````````````````````
 
-
 `hi` is parsed as code, leaving the backtick at the end as a literal
 backtick.
 
+
 ## Backslash escapes
 
 Any ASCII punctuation character may be backslash-escaped: