Use cmark-gfm by default, adapt CLI args, use escapes via find and replace if discount must be used.

main.go

@@ -88,7 +88,7 @@ func highlight(w io.Writer, source, lexer, style string) error {
 	return f.Format(w, s, it)
 }
 
-const Version = "0.1.2"
+const Version = "0.1.3"
 
 func main() {
 	css := flag.String("css", "", "Path to a CSS import to include at the beginning of the output")
@@ -119,6 +119,7 @@ func main() {
 	bs := bufio.NewScanner(r)
 	lang := ""
 	needCSS := false
+	cmark, lookErr := exec.LookPath("cmark-gfm")
 	for bs.Scan() {
 		text := bs.Text()
 		trimmed := strings.TrimSpace(text)
@@ -141,6 +142,12 @@ func main() {
 			currentCodeBlock.WriteString(text)
 			currentCodeBlock.WriteByte('\n')
 		} else {
+			/* If cmark is not installed then discount will be used, and we have to
+			 * do some encoding ourselves. */
+			if lookErr != nil {
+				text = strings.Replace(text, "\\<", "&lt;", -1)
+				text = strings.Replace(text, "\\>", "&gt;", -1)
+			}
 			out.WriteString(text)
 			out.WriteByte('\n')
 		}
@@ -157,12 +164,13 @@ func main() {
 	checkError(writeErr, "writing data to temporary file")
 	// shell out to markdown because of
 	// https://github.com/russross/blackfriday/issues/403
-	cmark, lookErr := exec.LookPath("cmark")
-	args := []string{cmark, "--unsafe", f.Name()}
+	var args []string
 	if lookErr != nil {
 		cmark, lookErr = exec.LookPath("markdown")
 		checkError(lookErr, "finding markdown binary")
-		args = []string{cmark, f.Name()}
+		args = []string{cmark, "-f", "smarty,pants", f.Name()}
+	} else {
+		args = []string{cmark, "--smart", "--unsafe", "--extension", "table", f.Name()}
 	}
 	execErr := localExec(cmark, args, []string{})
 	checkError(execErr, "executing markdown binary")