gl_find_char
static int gl_find_char(GetLine *gl, int count, int forward, int onto, char c);
int pos = gl_find_char(gl, count, forward, onto, c);
int pos = gl_find_char(gl, count, 1, 1, '\0');
int pos = gl_find_char(gl, count, 0, 1, '\0');
int pos = gl_find_char(gl, count, 1, 0, '\0');
int pos = gl_find_char(gl, count, 0, 0, '\0');
gl_find_char(gl, count, gl->vi.find_forward, gl->vi.find_onto,
gl_find_char(gl, count, !gl->vi.find_forward, gl->vi.find_onto,
int pos = gl_find_char(gl, count, forward, onto, c);