Inserts environment variables into source files.
Brass 1 would perform a replacement of everything inside [%tags%] with the corresponding environment variable. Brass 3's parser doesn't support environment variable substitution, so this plugin tries to help port over old source code.
This plugin registers macros before assembling that will replace environment variables matching "[%key%]" with the corresponding values.
The macro preprocessor deals with individual tokens, and so can't perform substitution on environment variables not declared as a string.
If you need to pass a numeric value to your source code via an environment variable, use the eval() function.