Add a test for marking multiple lines in bold (any emphasis)

example-site/content-org/all-posts.org

@@ -501,6 +501,28 @@ Here =~C-h f~= will show up as =`C-h f`= in Markdown and then
 
 Example:
 - Few of Emacs help keybindings: ~C-h f~, ~C-h v~
+** Multi-line bold
+:PROPERTIES:
+:EXPORT_FILE_NAME: multi-line-bold
+:END:
+*This works fine as the bold sentence does not include a newline.*
+
+*This is a sentence that should render completely in bold. It is
+ broken across multiple lines (in Org source) because of
+ auto-filling. But that should not break the bold rendering. But it
+ does by default.*
+
+If you do not see the above paragraph completely in bold, have below
+in your emacs config to fix it:
+#+BEGIN_SRC emacs-lisp :eval no
+(with-eval-after-load 'org
+  ;; Allow multiple line Org emphasis markup.
+  ;; http://emacs.stackexchange.com/a/13828/115
+  (setcar (nthcdr 4 org-emphasis-regexp-components) 20) ;Up to 20 lines, default is just 1
+  ;; Below is needed to apply the modified `org-emphasis-regexp-components'
+  ;; settings from above.
+  (org-set-emph-re 'org-emphasis-regexp-components org-emphasis-regexp-components))
+#+END_SRC
 * Example block                                                     :example:
 ** Simple
 :PROPERTIES:

example-site/content/posts/multi-line-bold.md

@@ -0,0 +1,25 @@
++++
+title = "Multi-line bold"
+tags = ["formatting"]
+draft = false
++++
+
+**This works fine as the bold sentence does not include a newline.**
+
+**This is a sentence that should render completely in bold. It is
+ broken across multiple lines (in Org source) because of
+ auto-filling. But that should not break the bold rendering. But it
+ does by default.**
+
+If you do not see the above paragraph completely in bold, have below
+in your emacs config to fix it:
+
+```emacs-lisp
+(with-eval-after-load 'org
+  ;; Allow multiple line Org emphasis markup.
+  ;; http://emacs.stackexchange.com/a/13828/115
+  (setcar (nthcdr 4 org-emphasis-regexp-components) 20) ;Up to 20 lines, default is just 1
+  ;; Below is needed to apply the modified `org-emphasis-regexp-components'
+  ;; settings from above.
+  (org-set-emph-re 'org-emphasis-regexp-components org-emphasis-regexp-components))
+```