xml1.sed

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# This sed program is used in pkgcreate.ch

# it will change XMLPUBFUN rettype XMLCALL func (type arg));
#         to     rettype func(type arg);

# it will handle the functions having multiple lines such as 
#  XMLPUBFUN rettype XMLCALL
#         func (type arg); 

/XMLPUBFUN.*XMLCALL/!d

# process line if XMLPUBFUN is present 
/XMLPUBFUN/{

    # Join function prototypes that span multiple lines
    :loop
    /).*/!{ 
      # if )); is not found, it will match next line
      N

      # remove return line '\n' and spaces " " between lines
      s/\n */ /

      # go back to loop
      b loop
    }

    # it will replace XMLPUBFUN rettype XMLCALL func (type arg));
    #         with rettype func(type arg)
    # \1 refers to rettype, \2 refers to func, \3 refers to (type arg)
    # [^,] means to match the first ","
    # [^)] means to match the first ")" 

    s/XMLPUBFUN\(.*\)XMLCALL\(.*\);/\1 \2;/
}