After setting 'md5', 'utf8' and length:8 options, the hashed filename is not always same whilethe file content is always same.

[ghosert]

The Gruntfile.js looks like this:

rev: {
    options: {
      encoding: 'utf8',
      algorithm: 'md5',
      length: 8
    },
    files: {
        src: [
          'assets/**/*'
        ]
    }
}

I got this on Sep 2:

-rw-rw-r-- 1 jiawzhang jiawzhang 166023 Sep 2 20:41 1ea21eb3.mdeditor.lib.min.css -rw-rw-r-- 1 jiawzhang jiawzhang 421621 Sep 2 20:41 428a0363.mdeditor.lib.min.js -rw-rw-r-- 1 jiawzhang jiawzhang 4516 Sep 2 20:41 be425dd2.mdeditor.min.css

And then I got this on Sep 3:

-rw-rw-r-- 1 jiawzhang jiawzhang 4516 Sep 3 09:40 1493dd1f.mdeditor.min.css -rw-rw-r-- 1 jiawzhang jiawzhang 421621 Sep 3 09:40 3c69ae34.mdeditor.lib.min.js -rw-rw-r-- 1 jiawzhang jiawzhang 166023 Sep 3 09:40 6343279f.mdeditor.lib.min.css

You could see the file size is same and I'm sure the content is same as well, but the hashed file name had been changed curiously.

[ghosert]

Close this invalid bug, the root cause is that the file is generated by cssmin/uglify, they have the options for banner like <%=grunt.template.today('yyyy-mm-dd') %>, So the file size is not changed, but the file content does based on the current date.

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