perf(external_link): faster regexp

Author: SukkaW

lib/plugins/filter/after_post_render/external_link.js

@@ -2,7 +2,7 @@
 
 const { isExternalLink } = require('hexo-util');
 let EXTERNAL_LINK_POST_ENABLED = true;
-const rATag = /<a(?:\s+?|\s+?[^<>]+\s+?)?href=["']((?:\/\/|http(?:s)?:)[^<>"']+)["'][^<>]*>/gi;
+const rATag = /<a(?:\s+?|\s+?[^<>]+\s+?)?href=["']((?:http(?:s)?:|\/\/)[^<>"']+)["'][^<>]*>/gi;
 const rTargetAttr = /target=/i;
 const rRelAttr = /rel=/i;
 const rRelStrAttr = /rel=["']([^<>"']*)["']/i;

lib/plugins/filter/after_render/external_link.js

@@ -3,7 +3,7 @@
 const { isExternalLink } = require('hexo-util');
 
 let EXTERNAL_LINK_SITE_ENABLED = true;
-const rATag = /<a(?:\s+?|\s+?[^<>]+\s+?)?href=["']((?:\/\/|http(?:s)?:)[^<>"']+)["'][^<>]*>/gi;
+const rATag = /<a(?:\s+?|\s+?[^<>]+\s+?)?href=["']((?:http(?:s)?:|\/\/)[^<>"']+)["'][^<>]*>/gi;
 const rTargetAttr = /target=/i;
 const rRelAttr = /rel=/i;
 const rRelStrAttr = /rel=["']([^<>"']*)["']/i;