Support option aliases

Readme.md

@@ -31,7 +31,7 @@ program
   .version('0.0.1')
   .option('-p, --peppers', 'Add peppers')
   .option('-P, --pineapple', 'Add pineapple')
-  .option('-b, --bbq-sauce', 'Add bbq sauce')
+  .option('-b, --bbq-sauce, --addBbq', 'Add bbq sauce')
   .option('-c, --cheese [type]', 'Add the specified type of cheese [marble]', 'marble')
   .parse(process.argv);
 
@@ -42,7 +42,7 @@ if (program.bbqSauce) console.log('  - bbq');
 console.log('  - %s cheese', program.cheese);
 ```
 
- Short flags may be passed as a single arg, for example `-abc` is equivalent to `-a -b -c`. Multi-word options such as "--template-engine" are camel-cased, becoming `program.templateEngine` etc.
+ Short flags may be passed as a single arg, for example `-abc` is equivalent to `-a -b -c`. Multi-word options such as "--template-engine" are camel-cased, becoming `program.templateEngine` etc. Option aliases are supported.
 
 
 ## Coercion

index.js

@@ -44,6 +44,7 @@ function Option(flags, description) {
   flags = flags.split(/[ ,|]+/);
   if (flags.length > 1 && !/^[[<]/.test(flags[1])) this.short = flags.shift();
   this.long = flags.shift();
+  this.aliases = flags;
   this.description = description || '';
 }
 
@@ -69,7 +70,7 @@ Option.prototype.name = function() {
  */
 
 Option.prototype.is = function(arg) {
-  return arg == this.short || arg == this.long;
+  return arg == this.short || arg == this.long || this.aliases.indexOf(arg) !== -1;
 };
 
 /**

test/test.options.aliases.js

@@ -0,0 +1,22 @@
+/**
+ * Module dependencies.
+ */
+
+var program = require('../')
+  , should = require('should');
+
+program
+  .version('0.0.1')
+  .option('-c, --add-cheese, --addCheese, --iWantCheese', 'add cheese');
+
+program.parse(['node', 'test', '-c']);
+program.addCheese.should.be.true();
+
+program.parse(['node', 'test', '--add-cheese']);
+program.addCheese.should.be.true();
+
+program.parse(['node', 'test', '--addCheese']);
+program.addCheese.should.be.true();
+
+program.parse(['node', 'test', '--iWantCheese']);
+program.addCheese.should.be.true();