From 3f6e2b96241aa25854b6518356578ea1520b6f7a Mon Sep 17 00:00:00 2001
From: Devine Lu Linvega <aliceffekt@gmail.com>
Date: Mon, 8 Apr 2024 11:16:42 -0700
Subject: [PATCH] Store rules boundaries in pointer

---
 src/modal.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/modal.c b/src/modal.c
index 22a71f1..ee1e872 100644
--- a/src/modal.c
+++ b/src/modal.c
@@ -5,7 +5,7 @@ typedef struct {
 } Rule;
 
 static int rules_len, direction;
-static Rule rules[0x100];
+static Rule rules[0x100], *rules_;
 static char dict[0x8000], *dict_ = dict;
 static char bank_a[0x4000], *prog_ = bank_a;
 static char bank_b[0x4000], *outp_ = bank_b;
@@ -138,6 +138,7 @@ add_rule(char *p)
 {
 	char c;
 	Rule *r = &rules[rules_len++];
+	rules_++;
 	p += 2;
 	while((c = *p) && c <= ' ') p++;
 	r->a = parse_rule(p), p = walk(p);
@@ -152,10 +153,10 @@ rewrite(void)
 	char c, last = 0, *p = direction ? bank_b : bank_a;
 	while((c = *p) && c <= ' ') p++;
 	while((c = *p)) {
-		int i;
 		if(p[0] == '<' && p[1] == '>')
 			return add_rule(p);
 		if(spacer(last)) {
+			int i;
 			for(i = 0; i < rules_len; i++) {
 				Rule *r = &rules[i];
 				char *res = match_rule(p, r);
@@ -182,10 +183,10 @@ rewrite(void)
 static void
 print_rules(void)
 {
-	int i;
+	Rule *r = rules;
 	fprintf(stderr, "\n");
-	for(i = 0; i < rules_len; i++)
-		fprintf(stderr, "<> (%s) (%s)\n", rules[i].a, rules[i].b);
+	while(r++ < rules_)
+		fprintf(stderr, "<> (%s) (%s)\n", r->a, r->b);
 	fprintf(stderr, "\n");
 }