planning

node_modules/remark-parse/lib/unescape.js

@@ -0,0 +1,36 @@
+'use strict'
+
+module.exports = factory
+
+var backslash = '\\'
+
+// Factory to de-escape a value, based on a list at `key` in `ctx`.
+function factory(ctx, key) {
+  return unescape
+
+  // De-escape a string using the expression at `key` in `ctx`.
+  function unescape(value) {
+    var prev = 0
+    var index = value.indexOf(backslash)
+    var escape = ctx[key]
+    var queue = []
+    var character
+
+    while (index !== -1) {
+      queue.push(value.slice(prev, index))
+      prev = index + 1
+      character = value.charAt(prev)
+
+      // If the following character is not a valid escape, add the slash.
+      if (!character || escape.indexOf(character) === -1) {
+        queue.push(backslash)
+      }
+
+      index = value.indexOf(backslash, prev + 1)
+    }
+
+    queue.push(value.slice(prev))
+
+    return queue.join('')
+  }
+}