[PATCH/RFC v1 3/5] sha1_name.c: cleanup using strbuf_set operations

@@ -920,8 +920,7 @@ static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1,
 		return 0;
 	if (--(cb->remaining) == 0) {
 		len = target - match;
-		strbuf_reset(&cb->buf);
-		strbuf_add(&cb->buf, match, len);
+		strbuf_set(&cb->buf, match, len);
 		return 1; /* we are done */
 	}
 	return 0;

@@ -957,8 +956,7 @@ static int interpret_nth_prior_checkout(const char *name, int namelen,
 
 	retval = 0;
 	if (0 < for_each_reflog_ent_reverse("HEAD", grab_nth_branch_switch, &cb)) {
-		strbuf_reset(buf);
-		strbuf_add(buf, cb.buf.buf, cb.buf.len);
+		strbuf_set(buf, cb.buf.buf, cb.buf.len);
 		retval = brace - name + 1;
 	}
 

@@ -1025,8 +1023,7 @@ static int interpret_empty_at(const char *name, int namelen, int len, struct str
 	if (next != name + 1)
 		return -1;
 
-	strbuf_reset(buf);
-	strbuf_add(buf, "HEAD", 4);
+	strbuf_set(buf, "HEAD", 4);
 	return 1;
 }
 

@@ -1044,8 +1041,7 @@ static int reinterpret(const char *name, int namelen, int len, struct strbuf *bu
 		strbuf_setlen(buf, used);
 		return len;
 	}
-	strbuf_reset(buf);
-	strbuf_addbuf(buf, &tmp);
+	strbuf_setbuf(buf, &tmp);
 	strbuf_release(&tmp);
 	/* tweak for size of {-N} versus expanded ref name */
 	return ret - used + len;

@@ -1054,8 +1050,7 @@ static int reinterpret(const char *name, int namelen, int len, struct strbuf *bu
 static void set_shortened_ref(struct strbuf *buf, const char *ref)
 {
 	char *s = shorten_unambiguous_ref(ref, 0);
-	strbuf_reset(buf);
-	strbuf_addstr(buf, s);
+	strbuf_setstr(buf, s);
 	free(s);
 }