Use defaultUseHardbreak config when render

Signed-off-by: Yukai Huang <yukaihuangtw@gmail.com>

Author: Yukaii

public/js/extra.js

@@ -195,7 +195,7 @@ export function isValidURL (str) {
 export function parseMeta (md, edit, view, toc, tocAffix) {
   let lang = null
   let dir = null
-  let breaks = true
+  let breaks = window.defaultUseHardbreak
   if (md && md.meta) {
     const meta = md.meta
     lang = meta.lang
@@ -225,10 +225,10 @@ export function parseMeta (md, edit, view, toc, tocAffix) {
     tocAffix.removeAttr('dir')
   }
   // breaks
-  if (typeof breaks === 'boolean' && !breaks) {
-    md.options.breaks = false
+  if (typeof breaks === 'boolean') {
+    md.options.breaks = breaks
   } else {
-    md.options.breaks = true
+    md.options.breaks = window.defaultUseHardbreak
   }
 }
 
@@ -979,7 +979,7 @@ function highlightRender (code, lang) {
 
 export const md = markdownit('default', {
   html: true,
-  breaks: true,
+  breaks: window.defaultUseHardbreak,
   langPrefix: '',
   linkify: true,
   typographer: true,