Gruntjs grunt cssmin保留非精简版本

我正在使用yeoman 1.0 rc和grunt创建一个静态网站，一切都很好，但我想做的除了css缩小版，一个所有文件路径都更新的非缩小版，这是可行的，我如何才能做到这一点

GrunFile是由yo webapp创建的一个非常标准的grunt文件

module.exports = function (grunt) {
// load all grunt tasks
require('matchdep').filterDev('grunt-*').forEach(grunt.loadNpmTasks);

// configurable paths
var yeomanConfig = {
    app: 'app',
    dist: 'dist'
};

grunt.initConfig({
    yeoman: yeomanConfig,
    watch: {
        options: {
            nospawn: true
        },
        coffee: {
            files: ['<%= yeoman.app %>/scripts/{,*/}*.coffee'],
            tasks: ['coffee:dist']
        },
        coffeeTest: {
            files: ['test/spec/{,*/}*.coffee'],
            tasks: ['coffee:test']
        },
        compass: {
            files: ['<%= yeoman.app %>/styles/{,*/}*.{scss,sass}'],
            tasks: ['compass:server']
        },
        livereload: {
            options: {
                livereload: LIVERELOAD_PORT
            },
            files: [
                '<%= yeoman.app %>/*.html',
                '{.tmp,<%= yeoman.app %>}/styles/{,*/}*.css',
                '{.tmp,<%= yeoman.app %>}/scripts/{,*/}*.js',
                '<%= yeoman.app %>/images/{,*/}*.{png,jpg,jpeg,gif,webp,svg}'
            ]
        }
    },
    connect: {
        options: {
            port: 9000,
            // change this to '0.0.0.0' to access the server from outside
            hostname: 'localhost'
        },
        livereload: {
            options: {
                middleware: function (connect) {
                    return [
                        mountFolder(connect, '.tmp'),
                        mountFolder(connect, yeomanConfig.app),
                        lrSnippet
                    ];
                }
            }
        },
        test: {
            options: {
                middleware: function (connect) {
                    return [
                        mountFolder(connect, '.tmp'),
                        mountFolder(connect, 'test')
                    ];
                }
            }
        },
        dist: {
            options: {
                middleware: function (connect) {
                    return [
                        mountFolder(connect, yeomanConfig.dist)
                    ];
                }
            }
        }
    },
    open: {
        server: {
            path: 'http://localhost:<%= connect.options.port %>'
        }
    },
    clean: {
        dist: {
            files: [{
                dot: true,
                src: [
                    '.tmp',
                    '<%= yeoman.dist %>/*',
                    '!<%= yeoman.dist %>/.git*'
                ]
            }]
        },
        server: '.tmp'
    },
    jshint: {
        options: {
            jshintrc: '.jshintrc'
        },
        all: [
            'Gruntfile.js',
            '<%= yeoman.app %>/scripts/{,*/}*.js',
            '!<%= yeoman.app %>/scripts/vendor/*',
            'test/spec/{,*/}*.js'
        ]
    },
    mocha: {
        all: {
            options: {
                run: true,
                urls: ['http://localhost:<%= connect.options.port %>/index.html']
            }
        }
    },
    coffee: {
        dist: {
            files: [{
                expand: true,
                cwd: '<%= yeoman.app %>/scripts',
                src: '{,*/}*.coffee',
                dest: '.tmp/scripts',
                ext: '.js'
            }]
        },
        test: {
            files: [{
                expand: true,
                cwd: 'test/spec',
                src: '{,*/}*.coffee',
                dest: '.tmp/spec',
                ext: '.js'
            }]
        }
    },
    compass: {
        options: {
            sassDir: '<%= yeoman.app %>/styles',
            cssDir: '.tmp/styles',
            generatedImagesDir: '.tmp/images/generated',
            imagesDir: '<%= yeoman.app %>/images',
            javascriptsDir: '<%= yeoman.app %>/scripts',
            fontsDir: '<%= yeoman.app %>/styles/fonts',
            importPath: '<%= yeoman.app %>/bower_components',
            httpImagesPath: '/images',
            httpGeneratedImagesPath: '/images/generated',
            relativeAssets: false
        },
        dist: {
            options:{
                outputStyle: 'nested'
            }
        },
        server: {
            options: {
                debugInfo: true
            }
        }
    },
    // not used since Uglify task does concat,
    // but still available if needed
    /*concat: {
        dist: {}
    },*/
    // not enabled since usemin task does concat and uglify
    // check index.html to edit your build targets
    // enable this task if you prefer defining your build targets here
    /*uglify: {
        dist: {}
    },*/
    rev: {
        dist: {
            files: {
                src: [
                    '<%= yeoman.dist %>/scripts/{,*/}*.js',
                    '<%= yeoman.dist %>/styles/{,*/}*.css',
                    '<%= yeoman.dist %>/images/{,*/}*.{png,jpg,jpeg,gif,webp}',
                    '<%= yeoman.dist %>/styles/fonts/*'
                ]
            }
        }
    },
    useminPrepare: {
        options: {
            dest: '<%= yeoman.dist %>'
        },
        html: '<%= yeoman.app %>/index.html'
    },
    usemin: {
        options: {
            dirs: ['<%= yeoman.dist %>']
        },
        html: ['<%= yeoman.dist %>/{,*/}*.html'],
        css: ['<%= yeoman.dist %>/styles/{,*/}*.css']
    },
    imagemin: {
        dist: {
            files: [{
                expand: true,
                cwd: '<%= yeoman.app %>/images',
                src: '{,*/}*.{png,jpg,jpeg}',
                dest: '<%= yeoman.dist %>/images'
            }]
        }
    },
    svgmin: {
        dist: {
            files: [{
                expand: true,
                cwd: '<%= yeoman.app %>/images',
                src: '{,*/}*.svg',
                dest: '<%= yeoman.dist %>/images'
            }]
        }
    },
    cssmin: {
        dist: {
            files: {
                '<%= yeoman.dist %>/styles/main.css': [
                    '.tmp/styles/{,*/}*.css',
                    '<%= yeoman.app %>/styles/{,*/}*.css'
                ]
            }
        }
    },
    htmlmin: {
        dist: {
            options: {
                /*removeCommentsFromCDATA: true,
                // https://github.com/yeoman/grunt-usemin/issues/44
                //collapseWhitespace: true,
                collapseBooleanAttributes: true,
                removeAttributeQuotes: true,
                removeRedundantAttributes: true,
                useShortDoctype: true,
                removeEmptyAttributes: true,
                removeOptionalTags: true*/
            },
            files: [{
                expand: true,
                cwd: '<%= yeoman.app %>',
                src: '*.html',
                dest: '<%= yeoman.dist %>'
            }]
        }
    },
    // Put files not handled in other tasks here
    copy: {
        dist: {
            files: [{
                expand: true,
                dot: true,
                cwd: '<%= yeoman.app %>',
                dest: '<%= yeoman.dist %>',
                src: [
                    '*.{ico,txt}',
                    '.htaccess',
                    'images/{,*/}*.{webp,gif}',
                    'styles/fonts/*'
                ]
            }, {
                expand: true,
                cwd: '.tmp/images',
                dest: '<%= yeoman.dist %>/images',
                src: [
                    'generated/*'
                ]
            }]
        }
    },
    concurrent: {
        server: [
            'coffee:dist',
            'compass:server'
        ],
        test: [
            'coffee',
            'compass'
        ],
        dist: [
            'coffee',
            'compass:dist',
            'imagemin',
            'svgmin',
            'htmlmin'
        ]
    }
});

grunt.registerTask('server', function (target) {
    if (target === 'dist') {
        return grunt.task.run(['build', 'open', 'connect:dist:keepalive']);
    }

    grunt.task.run([
        'clean:server',
        'concurrent:server',
        'connect:livereload',
        'open',
        'watch'
    ]);
});

grunt.registerTask('test', [
    'clean:server',
    'concurrent:test',
    'connect:test',
    'mocha'
]);

grunt.registerTask('build', [
    'clean:dist',
    'useminPrepare',
    'concurrent:dist',
    'cssmin',
    'concat',
    'uglify',
    'copy',
    'rev',
    'usemin'
]);

grunt.registerTask('default', [
    'jshint',
    'test',
    'build'
]);

module.exports=函数（grunt）{
//加载所有grunt任务
require（'matchdep'）.filterDev（'grunt-*'）.forEach（grunt.loadNpmTasks）；
//可配置路径
var yeomanConfig={
应用程序：“应用程序”，
dist:“dist”
};
grunt.initConfig({
约曼：约曼图，
观察：{
选项：{
nospawn：是的
},
咖啡：{
文件：['/scripts/{，*/}*.coffee']，
任务：['coffee:dist']
},
咖啡测试：{
文件：['test/spec/{，*/}*.coffee']，
任务：[“咖啡：测试”]
},
指南针：{
文件：['/styles/{，*/}*{scss，sass}']，
任务：['compass:server']
},
利弗雷罗德：{
选项：{
利弗雷洛德：利弗雷洛德港口
},
档案：[
“/*.html”，
“{.tmp，}/styles/{，*/}*.css”，
“{.tmp，}/scripts/{，*/}*.js”，
“/images/{，*/}*{png，jpg，jpeg，gif，webp，svg}”
]
}
},
连接：{
选项：{
港口：9000，
//将此更改为“0.0.0.0”以从外部访问服务器
主机名：“localhost”
},
利弗雷罗德：{
选项：{
中间件：功能（连接）{
返回[
mountFolder（连接“.tmp”），
mountFolder（连接，yeomanConfig.app），
LRS片段
];
}
}
},
测试：{
选项：{
中间件：功能（连接）{
返回[
mountFolder（连接“.tmp”），
安装文件夹（连接“测试”）
];
}
}
},
地区：{
选项：{
中间件：功能（连接）{
返回[
mountFolder（连接，yeomanConfig.dist）
];
}
}
}
},
开放式：{
服务器：{
路径：'http://localhost:'
}
},
清洁：{
地区：{
档案：[{
多特：没错，
src:[
“.tmp”，
'/*',
“！/.git*”
]
}]
},
服务器：'.tmp'
},
jshint:{
选项：{
jshintrc:“.jshintrc”
},
全部：[
“Gruntfile.js”，
“/scripts/{，*/}*.js”，
“！/scripts/vendor/*”，
'test/spec/{，*/}*.js'
]
},
摩卡咖啡：{
全部：{
选项：{
run：是的，
网址：['http://localhost:/index.html']
}
}
},
咖啡：{
地区：{
档案：[{
是的，
cwd:“/scripts”，
src:“{，*/}*.coffee”，
目标：'.tmp/scripts'，
分机：'.js'
}]
},
测试：{
档案：[{
是的，
cwd:“测试/规范”，
src:“{，*/}*.coffee”，
目的地：'.tmp/spec'，
分机：'.js'
}]
}
},
指南针：{
选项：{
sassDir:“/styles”，
cssDir:“.tmp/styles”，
generatedImagesDir:'.tmp/images/generated'，
imagesDir:“/images”，
javascriptsDir:“/scripts”，
fontsDir:“/styles/fonts”，
导入路径：'/bower_components'，
httpImagesPath:“/images”，
httpGeneratedImagesPath:“/images/generated”，
相对论集：假
},
地区：{
选项：{
outputStyle:“嵌套”
}
},
服务器：{
选项：{
debugInfo:true
}
}
},
//未使用，因为丑陋的任务不起作用，
//但如果需要，仍然可用
/*康卡特：{
地区：{}
},*/
//未启用，因为usemin任务没有concat和uglify
//选中index.html以编辑生成目标
//如果希望在此处定义生成目标，请启用此任务
/*丑陋的：{
地区：{}
},*/
修订版：{
地区：{
档案：{
src:[
“/scripts/{，*/}*.js”，
“/styles/{，*/}*.css”，
“/images/{，*/}*{png，jpg，jpeg，gif，webp}”，
“/styles/fonts/*”
]
}
}
},
使用准备：{
选项：{
目标：“”
},
html:“/index.html”
},
usemin：{
选项：{
目录：['']
},
html:['/{，*/}*.html']，
css:['/styles/{，*/}*.css']
},
imagemin：{
地区：{
档案：[{
是的，
cwd:“/images”，
src:“{，*/}*{png，jpg，jpeg}”，
目标：'/images'
}]
}
},
斯维格明：{
地区：{
档案：[{
是的，
cwd:“/images”，
src:'{，*/}*.svg',，
目标：'/images'
}]
}
},
cssmin：{
地区：{
档案：{
“/styles/main.css”：[
“.tmp/styles/{，*/}*.css”，
“/styles/{，*/}*.css”
]
}
}
},
htmlmin：{
地区：{
选项：{
/*removeCommentsFromCDATA:true，