Fix.

node_modules/braces/lib/parsers.js

@@ -0,0 +1,360 @@
+'use strict';
+
+var Node = require('snapdragon-node');
+var utils = require('./utils');
+
+/**
+ * Braces parsers
+ */
+
+module.exports = function(braces, options) {
+  braces.parser
+    .set('bos', function() {
+      if (!this.parsed) {
+        this.ast = this.nodes[0] = new Node(this.ast);
+      }
+    })
+
+    /**
+     * Character parsers
+     */
+
+    .set('escape', function() {
+      var pos = this.position();
+      var m = this.match(/^(?:\\(.)|\$\{)/);
+      if (!m) return;
+
+      var prev = this.prev();
+      var last = utils.last(prev.nodes);
+
+      var node = pos(new Node({
+        type: 'text',
+        multiplier: 1,
+        val: m[0]
+      }));
+
+      if (node.val === '\\\\') {
+        return node;
+      }
+
+      if (node.val === '${') {
+        var str = this.input;
+        var idx = -1;
+        var ch;
+
+        while ((ch = str[++idx])) {
+          this.consume(1);
+          node.val += ch;
+          if (ch === '\\') {
+            node.val += str[++idx];
+            continue;
+          }
+          if (ch === '}') {
+            break;
+          }
+        }
+      }
+
+      if (this.options.unescape !== false) {
+        node.val = node.val.replace(/\\([{}])/g, '$1');
+      }
+
+      if (last.val === '"' && this.input.charAt(0) === '"') {
+        last.val = node.val;
+        this.consume(1);
+        return;
+      }
+
+      return concatNodes.call(this, pos, node, prev, options);
+    })
+
+    /**
+     * Brackets: "[...]" (basic, this is overridden by
+     * other parsers in more advanced implementations)
+     */
+
+    .set('bracket', function() {
+      var isInside = this.isInside('brace');
+      var pos = this.position();
+      var m = this.match(/^(?:\[([!^]?)([^\]]{2,}|\]-)(\]|[^*+?]+)|\[)/);
+      if (!m) return;
+
+      var prev = this.prev();
+      var val = m[0];
+      var negated = m[1] ? '^' : '';
+      var inner = m[2] || '';
+      var close = m[3] || '';
+
+      if (isInside && prev.type === 'brace') {
+        prev.text = prev.text || '';
+        prev.text += val;
+      }
+
+      var esc = this.input.slice(0, 2);
+      if (inner === '' && esc === '\\]') {
+        inner += esc;
+        this.consume(2);
+
+        var str = this.input;
+        var idx = -1;
+        var ch;
+
+        while ((ch = str[++idx])) {
+          this.consume(1);
+          if (ch === ']') {
+            close = ch;
+            break;
+          }
+          inner += ch;
+        }
+      }
+
+      return pos(new Node({
+        type: 'bracket',
+        val: val,
+        escaped: close !== ']',
+        negated: negated,
+        inner: inner,
+        close: close
+      }));
+    })
+
+    /**
+     * Empty braces (we capture these early to
+     * speed up processing in the compiler)
+     */
+
+    .set('multiplier', function() {
+      var isInside = this.isInside('brace');
+      var pos = this.position();
+      var m = this.match(/^\{((?:,|\{,+\})+)\}/);
+      if (!m) return;
+
+      this.multiplier = true;
+      var prev = this.prev();
+      var val = m[0];
+
+      if (isInside && prev.type === 'brace') {
+        prev.text = prev.text || '';
+        prev.text += val;
+      }
+
+      var node = pos(new Node({
+        type: 'text',
+        multiplier: 1,
+        match: m,
+        val: val
+      }));
+
+      return concatNodes.call(this, pos, node, prev, options);
+    })
+
+    /**
+     * Open
+     */
+
+    .set('brace.open', function() {
+      var pos = this.position();
+      var m = this.match(/^\{(?!(?:[^\\}]?|,+)\})/);
+      if (!m) return;
+
+      var prev = this.prev();
+      var last = utils.last(prev.nodes);
+
+      // if the last parsed character was an extglob character
+      // we need to _not optimize_ the brace pattern because
+      // it might be mistaken for an extglob by a downstream parser
+      if (last && last.val && isExtglobChar(last.val.slice(-1))) {
+        last.optimize = false;
+      }
+
+      var open = pos(new Node({
+        type: 'brace.open',
+        val: m[0]
+      }));
+
+      var node = pos(new Node({
+        type: 'brace',
+        nodes: []
+      }));
+
+      node.push(open);
+      prev.push(node);
+      this.push('brace', node);
+    })
+
+    /**
+     * Close
+     */
+
+    .set('brace.close', function() {
+      var pos = this.position();
+      var m = this.match(/^\}/);
+      if (!m || !m[0]) return;
+
+      var brace = this.pop('brace');
+      var node = pos(new Node({
+        type: 'brace.close',
+        val: m[0]
+      }));
+
+      if (!this.isType(brace, 'brace')) {
+        if (this.options.strict) {
+          throw new Error('missing opening "{"');
+        }
+        node.type = 'text';
+        node.multiplier = 0;
+        node.escaped = true;
+        return node;
+      }
+
+      var prev = this.prev();
+      var last = utils.last(prev.nodes);
+      if (last.text) {
+        var lastNode = utils.last(last.nodes);
+        if (lastNode.val === ')' && /[!@*?+]\(/.test(last.text)) {
+          var open = last.nodes[0];
+          var text = last.nodes[1];
+          if (open.type === 'brace.open' && text && text.type === 'text') {
+            text.optimize = false;
+          }
+        }
+      }
+
+      if (brace.nodes.length > 2) {
+        var first = brace.nodes[1];
+        if (first.type === 'text' && first.val === ',') {
+          brace.nodes.splice(1, 1);
+          brace.nodes.push(first);
+        }
+      }
+
+      brace.push(node);
+    })
+
+    /**
+     * Capture boundary characters
+     */
+
+    .set('boundary', function() {
+      var pos = this.position();
+      var m = this.match(/^[$^](?!\{)/);
+      if (!m) return;
+      return pos(new Node({
+        type: 'text',
+        val: m[0]
+      }));
+    })
+
+    /**
+     * One or zero, non-comma characters wrapped in braces
+     */
+
+    .set('nobrace', function() {
+      var isInside = this.isInside('brace');
+      var pos = this.position();
+      var m = this.match(/^\{[^,]?\}/);
+      if (!m) return;
+
+      var prev = this.prev();
+      var val = m[0];
+
+      if (isInside && prev.type === 'brace') {
+        prev.text = prev.text || '';
+        prev.text += val;
+      }
+
+      return pos(new Node({
+        type: 'text',
+        multiplier: 0,
+        val: val
+      }));
+    })
+
+    /**
+     * Text
+     */
+
+    .set('text', function() {
+      var isInside = this.isInside('brace');
+      var pos = this.position();
+      var m = this.match(/^((?!\\)[^${}[\]])+/);
+      if (!m) return;
+
+      var prev = this.prev();
+      var val = m[0];
+
+      if (isInside && prev.type === 'brace') {
+        prev.text = prev.text || '';
+        prev.text += val;
+      }
+
+      var node = pos(new Node({
+        type: 'text',
+        multiplier: 1,
+        val: val
+      }));
+
+      return concatNodes.call(this, pos, node, prev, options);
+    });
+};
+
+/**
+ * Returns true if the character is an extglob character.
+ */
+
+function isExtglobChar(ch) {
+  return ch === '!' || ch === '@' || ch === '*' || ch === '?' || ch === '+';
+}
+
+/**
+ * Combine text nodes, and calculate empty sets (`{,,}`)
+ * @param {Function} `pos` Function to calculate node position
+ * @param {Object} `node` AST node
+ * @return {Object}
+ */
+
+function concatNodes(pos, node, parent, options) {
+  node.orig = node.val;
+  var prev = this.prev();
+  var last = utils.last(prev.nodes);
+  var isEscaped = false;
+
+  if (node.val.length > 1) {
+    var a = node.val.charAt(0);
+    var b = node.val.slice(-1);
+
+    isEscaped = (a === '"' && b === '"')
+      || (a === "'" && b === "'")
+      || (a === '`' && b === '`');
+  }
+
+  if (isEscaped && options.unescape !== false) {
+    node.val = node.val.slice(1, node.val.length - 1);
+    node.escaped = true;
+  }
+
+  if (node.match) {
+    var match = node.match[1];
+    if (!match || match.indexOf('}') === -1) {
+      match = node.match[0];
+    }
+
+    // replace each set with a single ","
+    var val = match.replace(/\{/g, ',').replace(/\}/g, '');
+    node.multiplier *= val.length;
+    node.val = '';
+  }
+
+  var simpleText = last.type === 'text'
+    && last.multiplier === 1
+    && node.multiplier === 1
+    && node.val;
+
+  if (simpleText) {
+    last.val += node.val;
+    return;
+  }
+
+  prev.push(node);
+}