Fixed parsing sentences that had two em dashes surrounded by spaces f…

…rom becoming del phrases. [jgarber#19 state:resolved]

CHANGELOG

@@ -1,5 +1,6 @@
 = Edge
 
+* Fixed parsing sentences that had two em dashes surrounded by spaces from becoming del phrases. #19
 * Fixed links including prior quoted phrases. #17
 
 

ext/redcloth_scan/redcloth_inline.rl

@@ -39,7 +39,8 @@
   em = "["? "_" >X mtext >A %T :> "_" "]"? ;
   i = "["? "__" >X mtext >A %T :> "__" "]"? ;
   del = "[-" >X C ( mtext ) >A %T :>> "-]" ;
-  del_phrase = (" -") >X C ( mtext ) >A %T :>> ( "-" (" " | PUNCT) @{ fhold; } ) ;
+  emdash_parenthetical_phrase_with_spaces = " -- " mtext " -- " ;
+  del_phrase = ((" -") >X C ( mtext ) >A %T :>> ( "-" (" " | PUNCT) @{ fhold; } )) - emdash_parenthetical_phrase_with_spaces ;
   ins = "["? "+" >X mtext >A %T :> "+" "]"? ;
   sup = "["? "^" >X mtext >A %T :> "^" "]"? ;
   sub = "["? "~" >X mtext >A %T :> "~" "]"? ;

test/basic.yml

@@ -123,6 +123,18 @@ in: Observe -- very nice!
 html: <p>Observe &#8212; very nice!</p>
 latex: "Observe --- very nice!\n\n"
 --- 
+name: parenthetical phrase set off with em dashes
+desc: Sentences with two em dashes should not turn them into strikethroughs
+in: An emdash indicates a parenthetical thought--like this one--which is set apart from the rest of a sentence.
+html: "<p>An emdash indicates a parenthetical thought&#8212;like this one&#8212;which is set apart from the rest of a sentence.</p>"
+latex: "An emdash indicates a parenthetical thought---like this one---which is set apart from the rest of a sentence.\n\n"
+---
+name: parenthetical phrase set off with em dashes surrounded by spaces
+desc: Sentences with two em dashes should not turn them into strikethroughs
+in: An emdash indicates a parenthetical thought -- like this one -- which is set apart from the rest of a sentence.
+html: "<p>An emdash indicates a parenthetical thought &#8212; like this one &#8212; which is set apart from the rest of a sentence.</p>"
+latex: "An emdash indicates a parenthetical thought --- like this one --- which is set apart from the rest of a sentence.\n\n"
+---
 name: single hyphens with spaces
 desc: Single hyphens are replaced with en-dashes if they are surrounded by spaces.
 in: Observe - tiny and brief.