/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ /* ts.c: minor string processing subroutines */#include "t.h" intmatch (char *s1, char *s2){	while (*s1 == *s2)		if (*s1++ == '\0')			return(1);		else			s2++;	return(0);}  intprefix(char *small, char *big){	int	c; 	while ((c = *small++) == *big++)		if (c == 0) 			return(1);	return(c == 0);}  intletter (int ch){	if (ch >= 'a' && ch <= 'z')		return(1);	if (ch >= 'A' && ch <= 'Z')		return(1);	return(0);}  intnumb(char *str){				/* convert to integer */	int	k;	for (k = 0; *str >= '0' && *str <= '9'; str++)		k = k * 10 + *str - '0';	return(k);}  intdigit(int x){	return(x >= '0' && x <= '9');}  intmax(int a, int b){	return( a > b ? a : b);}  voidtcopy (char *s, char *t){	while (*s++ = *t++)		;}