#pragma	src	"/sys/src/libString"#pragma	lib	"libString.a" /* extensible Strings */typedef struct String {	Lock;	char	*base;	/* base of String */	char	*end;	/* end of allocated space+1 */	char	*ptr;	/* ptr into String */	short	ref;	uchar	fixed;} String; #define s_clone(s) s_copy((s)->base)#define s_to_c(s) ((s)->base)#define s_len(s) ((s)->ptr-(s)->base) extern String*	s_append(String*, char*);extern String*	s_array(char*, int);extern String*	s_copy(char*);extern void	s_free(String*);extern String*	s_incref(String*);	extern String*	s_memappend(String*, char*, int);extern String*	s_nappend(String*, char*, int);extern String*	s_new(void);extern String*	s_newalloc(int);extern String*	s_parse(String*, String*);extern String*	s_reset(String*);extern String*	s_restart(String*);extern void	s_terminate(String*);extern void	s_tolower(String*);extern void	s_putc(String*, int);extern String*	s_unique(String*);extern String*	s_grow(String*, int); #ifdef BGETCextern int	s_read(Biobuf*, String*, int);extern char	*s_read_line(Biobuf*, String*);extern char	*s_getline(Biobuf*, String*);typedef struct Sinstack Sinstack;#pragma incomplete Sinstackextern char	*s_rdinstack(Sinstack*, String*);extern Sinstack	*s_allocinstack(char*);extern void	s_freeinstack(Sinstack*);#endif BGETC