make less-rails 添加行号作为注释

Question

有什么方法可以配置 less-rails 使其在注释中显示原始来源的行号？是否可以启用源映射？

考虑以下示例：

file1.less

body {
  background-color: black;
}

file2.less

body {
  padding: 20px;
}

application.css.less

@import "file1";
@import "file1";

我得到的是：

body {
  background-color: black;
}

body {
  padding: 20px;
}

我想要什么

/* file1.less line: 1 */
body {
  background-color: black;
}

/* file2.less line: 1 */
body {
  padding: 20px;
}

或者有没有其他更简单的方法来找出哪个规则属于哪个文件？

更新

配置我的应用程序时，config.less 仅包含以下内容：

{:paths=>
  [#<Pathname:/home/yan-foto/.../vendor/less>,
   #<Pathname:/home/yan-foto/.../node_modules/bootstrap-datetimepicker>,
   #<Pathname:/home/yan-foto/.../node_modules/bootstrap-slider>],
 :compress=>false}

Answer 1

打开 vendor/bundle/ruby/1.9.1/gems/less-2.6.0/lib/less/parser.rb 文件并替换（第 54 行左右）：

  end
  @parser = Less::JavaScript.exec { Less['Parser'].new(env) }

与：

  end
  env['dumpLineNumbers'] = 'comments';
  @parser = Less::JavaScript.exec { Less['Parser'].new(env) }

~~基于 https://github.com/metaskills/less-rails#configuration 你应该尝试：~~

MyProject::Application.configure do config.less.line-numbers << "comments" config.less.compress = true end

当前面的工作按预期进行时，您还可以考虑使用 CSS sourcemaps:

MyProject::Application.configure do config.less.source-map = true config.less.source-map-map-inline = true end

I really don't find the line config.less.line-numbers << "comments" in docs

事实上，我的回答只是一个建议，我无法对其进行测试。以上建议您可以为 Less 编译器设置一些选项。

您也可以通过运行 lessc 不带任何参数找到此选项：

-------------------------- Deprecated ---------------- --line-numbers=TYPE Outputs filename and line numbers. TYPE can be either 'comments', which will output the debug info within comments, 'mediaquery' that will output the information within a fake media query which is compatible with the SASS format, and 'all' which will do both. --verbose Be verbose.

and I am sure that it has a syntax error because of the dash between line and numbers

我敢打赌你是对的。您应该尽可能使用：config.less.dumpLineNumbers 和 config.less.sourceMap

~~或在您的 config.less 中：:dumpLineNumbers>comments~~

make less-rails 添加行号作为注释

Make less-rails add line numbers as comment

ruby-on-rails

less

asset-pipeline

less-rails