Help on M4 Usage

[Nidhin Joseph]

Hi,
 I'm stuck with a doubt regarding M4 usage. I want M4 to identify quoted
strings and replace the quotes along with the key.

 For example,
   I have a definition inside .m4 file as
       define_m4(MY_CUSTOM_KEY, 50 );

   And now in my source file, I have two funtion calls
     getApproximateValue(MY_CUSTOM_KEY);
     getApproximateValue("MY_CUSTOM_KEY");

   After running M4, what I'm expecting is
     getApproximateValue(50);
     getApproximateValue(50); //replace the quotes also


   But what I'm getting is simple macro expansion as shown below.
     getApproximateValue(50);
     getApproximateValue("50")

I understand, M4 is working as expected. Could you please help me to know
whether my requirement is achievable without modifying the .M4 definition
file?

Thanks,
Nidhin