DOS Multiline batch command. How to add comments between arguments?

问题

Id like to add comments like this:

makecert -r ^        // This means SelfSigned
         -pe ^       // Private key is exportable
         -a sha512 ^ // The algoritm
         ...

Is this possible? How?

回答1:

Nothing official, but there is a simple and very effective hack - use undefined variables. At least one = is added to guarantee that the content cannot be a valid variable name, since the character cannot be used in a variable name. I use one at the beginning and end just for symmetry. Also, the comment cannot contain % or :. Finally, the line continuation ^ character must be the last character in the line.

makecert -r        %= This means SelfSigned     =% ^
         -pe       %= Private key is exportable =% ^
         -a sha512 %= The algoritm              =% ^
         ...

Note - this only works within a batch script. It cannot be used on the command line.

来源：https://stackoverflow.com/questions/28697592/dos-multiline-batch-command-how-to-add-comments-between-arguments