Merge pull request markdown-it#1009 from notriddle/spec-0.31.2

Update to spec 0.31.2

lib/common/html_blocks.mjs

@@ -51,8 +51,8 @@ export default [
   'option',
   'p',
   'param',
+  'search',
   'section',
-  'source',
   'summary',
   'table',
   'tbody',

lib/common/html_re.mjs

@@ -13,9 +13,9 @@ const attribute   = '(?:\\s+' + attr_name + '(?:\\s*=\\s*' + attr_value + ')?)'
 const open_tag    = '<[A-Za-z][A-Za-z0-9\\-]*' + attribute + '*\\s*\\/?>'
 
 const close_tag   = '<\\/[A-Za-z][A-Za-z0-9\\-]*\\s*>'
-const comment     = '<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->'
+const comment     = '<!---?>|<!--(?:[^-]|-[^-]|--[^>])*-->'
 const processing  = '<[?][\\s\\S]*?[?]>'
-const declaration = '<![A-Z]+\\s+[^>]*>'
+const declaration = '<![A-Za-z][^>]*>'
 const cdata       = '<!\\[CDATA\\[[\\s\\S]*?\\]\\]>'
 
 const HTML_TAG_RE = new RegExp('^(?:' + open_tag + '|' + close_tag + '|' + comment +

lib/common/utils.mjs

@@ -176,7 +176,7 @@ function isWhiteSpace (code) {
 
 // Currently without astral characters support.
 function isPunctChar (ch) {
-  return ucmicro.P.test(ch)
+  return ucmicro.P.test(ch) || ucmicro.S.test(ch)
 }
 
 // Markdown ASCII punctuation characters.

package.json

@@ -50,7 +50,7 @@
     "linkify-it": "^5.0.0",
     "mdurl": "^2.0.0",
     "punycode.js": "^2.3.1",
-    "uc.micro": "^2.0.0"
+    "uc.micro": "^2.1.0"
   },
   "devDependencies": {
     "@rollup/plugin-babel": "^6.0.4",