esvapi: modify searchFormat() to take a function

esvapi.d

@@ -178,6 +178,12 @@ verseValid(in char[] verse)
 	assert(verseValid("15:12-17"));
 }
 
+string
+defaultSearchFmt(string reference, string content) pure
+{
+	return format!"\033[1m%s\033[0m\n  %s\n"(reference, content.wrap(80));
+}
+
 /++
  + Structure containing the authentication key, API URL,
  + any parameters to use when making a request as well as the
@@ -319,11 +325,12 @@ struct ESVApi
 	}
 
 	/++
-	 + Calls search() and formats the results nicely as plain text.
+	 + Calls search() and formats the results nicely as plain text,
+	 + unless a custom function is provided.
 	 +/
 	string
-	searchFormat(alias fmt = "\033[1m%s\033[0m\n  %s\n")
+	searchFormat(in string query,
-	(in string query, int lineLength = 0) /* 0 means default */
+		string function(string, string) fmt = &defaultSearchFmt)
 	{
 		char[] layout;
 		JSONValue resp;
@@ -334,15 +341,9 @@ struct ESVApi
 		enforce!ESVException(resp["total"].integer != 0,
 			"No results for search");
 
-		lineLength = lineLength == 0 ? 80 : lineLength;
-
 		() @trusted {
 			foreach (JSONValue item; resp["results"].array) {
-				layout ~= format!fmt(
+				layout ~= fmt(item["reference"].str, item["content"].str);
-					item["reference"].str,
-					item["content"].str
-						.wrap(lineLength)
-				);
 			}
 		}();