Added support for multi word info string as in spec.

Related issue: shurcooL/markdownfmt#58

Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>

README.md

@@ -1,13 +1,12 @@
 markdownfmt
 ===========
 
-Fork of github.com/shurcooL/markdownfmt that targets:
+Fork of github.com/shurcooL/markdownfmt that targets following additions:
 
-* Goldmark to render from parsed markdown AST.
+* Goldmark used instead of blackfriday to render from parsed markdown AST
+* Full info string support for Fenced Code Block (see [issue](https://github.com/shurcooL/markdownfmt/issues/58))
 * Hash-based headers only.
 
-
-
 [![Build Status](https://travis-ci.org/Kunde21/markdownfmt.svg?branch=master)](https://travis-ci.org/Kunde21/markdownfmt) [![GoDoc](https://godoc.org/github.com/Kunde21/markdownfmt?status.svg)](https://godoc.org/github.com/Kunde21/markdownfmt)
 
 Like `gofmt`, but for Markdown.

markdown/main.go

@@ -80,30 +80,20 @@ func (mr *MarkdownFmtRenderer) blockCode(node ast.Node, source []byte) {
 
 	lang := ""
 	tnode, isFenced := node.(*ast.FencedCodeBlock)
-	if isFenced {
-		info := tnode.Info
-		if info != nil {
-			lang = string(info.Text(source))
-		}
-	}
-	// Parse out the language name.
-	count := 0
-	for _, elt := range strings.Fields(lang) {
-		if elt[0] == '.' {
-			elt = elt[1:]
-		}
-		if len(elt) == 0 {
-			continue
+	mr.buf.WriteString("```")
+	if isFenced && tnode.Info != nil {
+		mr.buf.Write(tnode.Info.Text(source))
+
+		for _, elt := range strings.Fields(lang) {
+			elt = strings.TrimSpace(strings.TrimLeft(elt, ". "))
+			if len(elt) == 0 {
+				continue
+			}
+			lang = elt
+			break
 		}
-		mr.buf.WriteString("```")
-		mr.buf.WriteString(elt)
-		count++
-		break
 	}
 
-	if count == 0 {
-		mr.buf.WriteString("```")
-	}
 	mr.buf.WriteString("\n")
 	mr.buf.Write(mr.leader())
 

markdown/testfiles/reference.same.md

@@ -76,6 +76,14 @@ func main() {
 }
 ```
 
+With language and some tags.
+
+```Go some tags = whatever, but should be preserved.
+func main() {
+	println("Hi.")
+}
+```
+
 Here's a table.
 
 | Name  | Age |