----------- A sample.c input file showing different func decl styles ----

#include <stdio.h>
typedef struct waldo { int i; float z; } FOOBAR;
double x;

extern something();   /* should be elided by the tool */
char *strcat();

main(argc,argv)
    int argc;
    char *argv[];
    {
    float x = 2.0;
    FOOBAR y;
    extern double waldo();

    func1(x,y);
    noargs();
    weird();
    }

char *strcmp();

double func1(x,y,z,q,r)
    float x;
    FOOBAR y,z;
    struct waldo *q,r;
    {
    }

int noargs()
    {
    }

weird()
    {
    /* no args and defaults to int type func */
    }

double *
crazy(q)
    int ***q;
    {
    /* The func type is on the previous line! */
    }

--------------  proto.out --------------------------------------------------

extern double func1(float x,FOOBAR y,FOOBAR z,struct waldo *q,struct waldo r);
extern int noargs(void);
extern int weird(void);
extern double * crazy(int ***q);

--------------  ed.out ------------------------------------------------------

5,10d
11i\
main(int argc,char *argv[])
14d
21,26d
27i\
double func1(float x,FOOBAR y,FOOBAR z,struct waldo *q,struct waldo r)
29,30d
31i\
int noargs(void)
33,34d
35i\
weird(void)
39,41d
42i\
double * crazy(int ***q)

----------------- The input file after editing by sed -----------------

#include <stdio.h>
typedef struct waldo { int i; float z; } FOOBAR;
double x;

main(int argc,char *argv[])
    {
    float x = 2.0;
    FOOBAR y;

    func1(x,y);
    noargs();
    weird();
    }

double func1(float x,FOOBAR y,FOOBAR z,struct waldo *q,struct waldo r)
    {
    }
int noargs(void)
    {
    }
weird(void)
    {
    /* no args and defaults to int type func */
    }

double * crazy(int ***q)
    {
    /* The func type is on the previous line! */
    }