Index: libsm/strcat.c
===================================================================
--- libsm/strcat.c	(revision 7258c6ac4de2518c5430095742a27be7af0c89d7)
+++ libsm/strcat.c	(revision d2d593b0a5d498d4aeecd9fb6c945b0a65dfaa33)
@@ -11,16 +11,16 @@
 int8_t *strcat(int8_t *s1, int8_t *s2)
 {
-        register int8_t *os1;
+	register int8_t *os1;
 
-        os1 = s1;
+	os1 = s1;
 
-        while(*s1++)
-                ;
+	while(*s1++)
+		;
 
-        --s1;
+	--s1;
 
-        while(*s1++ = *s2++)
-                ;
+	while(*s1++ = *s2++)
+		;
 
-        return(os1);
+	return(os1);
 }
Index: libsm/strccpy.c
===================================================================
--- libsm/strccpy.c	(revision 7258c6ac4de2518c5430095742a27be7af0c89d7)
+++ libsm/strccpy.c	(revision d2d593b0a5d498d4aeecd9fb6c945b0a65dfaa33)
@@ -18,12 +18,12 @@
 int8_t *strccpy(int8_t *s1, int8_t *s2, int8_t c)
 {
-        register int8_t *os1;
+	register int8_t *os1;
 	register int8_t x;
 
-        os1 = s1;
+	os1 = s1;
 
-        while(c != (x = *s1++))
+	while(c != (x = *s1++))
 		*s2++ = x;
 
-        return(os1);
+	return(os1);
 }
Index: libsm/strcspn.c
===================================================================
--- libsm/strcspn.c	(revision 7258c6ac4de2518c5430095742a27be7af0c89d7)
+++ libsm/strcspn.c	(revision d2d593b0a5d498d4aeecd9fb6c945b0a65dfaa33)
@@ -11,16 +11,16 @@
 int16_t strcspn(int8_t *string, int8_t *charset)
 {
-        register int8_t *p, *q;
+	register int8_t *p, *q;
 	register int16_t n = 0;
 
-        for(q = string; *q != '\0'; ++q , ++n) {
+	for(q = string; *q != '\0'; ++q , ++n) {
 
-                for(p = charset; *p != '\0' && *p != *q; ++p)
-                        ;
+		for(p = charset; *p != '\0' && *p != *q; ++p)
+			;
 
-                if(*p != '\0')
-                        break;
-        }
+		if(*p != '\0')
+			break;
+	}
 
-        return(n);
+	return(n);
 }
Index: libsm/strlen.c
===================================================================
--- libsm/strlen.c	(revision 7258c6ac4de2518c5430095742a27be7af0c89d7)
+++ libsm/strlen.c	(revision d2d593b0a5d498d4aeecd9fb6c945b0a65dfaa33)
@@ -11,9 +11,9 @@
 int16_t strlen(int8_t *s)
 {
-        register int16_t n = 0;
+	register int16_t n = 0;
 
-        while (*s++ != '\0')
-               ++n;
+	while (*s++ != '\0')
+	       ++n;
 
-        return (n);
+	return (n);
 }
Index: libsm/strtok.c
===================================================================
--- libsm/strtok.c	(revision 7258c6ac4de2518c5430095742a27be7af0c89d7)
+++ libsm/strtok.c	(revision d2d593b0a5d498d4aeecd9fb6c945b0a65dfaa33)
@@ -23,5 +23,5 @@
 	/* first or subsequent call ? */
 
-        p = (string == NULL) ? savept : string;
+	p = (string == NULL) ? savept : string;
 
 	if (p == 0)              /* return if no tokens remain */