Add support for passing phrases not to work about in ignore

index.js

@@ -1,16 +1,20 @@
 'use strict';
 
+var difference = require('lodash.difference');
 var search = require('nlcst-search');
 var toString = require('nlcst-to-string');
 var position = require('unist-util-position');
 var findBefore = require('unist-util-find-before');
-var list = require('./list');
+var patterns = require('./list');
 
 module.exports = passive;
 
 var verbs = ['am', 'are', 'were', 'being', 'is', 'been', 'was', 'be'];
 
-function passive() {
+function passive(options) {
+  var ignore = (options || {}).ignore || [];
+  var list = difference(patterns, ignore);
+
   return transformer;
 
   /* Search `tree` for violations. */

package.json

@@ -21,6 +21,7 @@
     "index.js"
   ],
   "dependencies": {
+    "lodash.difference": "^4.5.0",
     "nlcst-search": "^1.0.0",
     "nlcst-to-string": "^2.0.0",
     "unist-util-find-before": "^2.0.0",

readme.md

@@ -49,10 +49,14 @@ example.txt
 
 ## API
 
-### `retext().use(passive)`
+### `retext().use(passive[, options])`
 
 Check for passive voice.  No options.
 
+###### `options.ignore`
+
+`Array.<string>` — phrases _not_ to warn about.
+
 ## Related
 
 *   [`retext-equality`](https://github.com/wooorm/retext-equality)

test.js

@@ -7,21 +7,35 @@ var passive = require('./');
 test('passive', function (t) {
   t.plan(2);
 
+  var doc = [
+    'He was withheld while we were being fed.',
+    'Fed.',
+    'The fed.'
+  ].join('\n');
+
   retext()
     .use(passive)
-    .process([
-      'He was withheld while we were being fed.',
-      'Fed.',
-      'The fed.'
-    ].join('\n'), function (err, file) {
-      t.ifError(err, 'should not fail');
-
+    .process(doc, function (err, file) {
       t.deepEqual(
-        file.messages.map(String),
+        [err, file.messages.map(String)],
         [
-          '1:8-1:16: Don’t use the passive voice',
-          '1:37-1:40: Don’t use the passive voice'
-        ]
+          null,
+          [
+            '1:8-1:16: Don’t use the passive voice',
+            '1:37-1:40: Don’t use the passive voice'
+          ]
+        ],
+        'should work'
+      );
+    });
+
+  retext()
+    .use(passive, {ignore: ['fed']})
+    .process(doc, function (err, file) {
+      t.deepEqual(
+        [err, file.messages.map(String)],
+        [null, ['1:8-1:16: Don’t use the passive voice']],
+        'should `ignore`'
       );
     });
 });