From 4a9d68bf7f3a523c675d59bd14fdf987cf969c12 Mon Sep 17 00:00:00 2001
From: nhmall <nhmall@nethack.org>
Date: Mon, 4 Dec 2023 15:41:09 -0500
Subject: [PATCH] symbol parsing follow-up

---
 src/symbols.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/symbols.c b/src/symbols.c
index 3d201ad7f..9690c4004 100644
--- a/src/symbols.c
+++ b/src/symbols.c
@@ -764,19 +764,19 @@ boolean
 parsesymbols(register char *opts, int which_set)
 {
     int val;
-    unsigned i;
-    char *symname, *strval, *ch = opts,
+    char *symname, *strval, *ch,
          *first_unquoted_comma = 0, *first_unquoted_colon = 0;
     const struct symparse *symp;
     boolean is_glyph = FALSE;
 
     /* are there any commas or colons that aren't quoted? */
-    for (i = 0; i < strlen(opts); ++i) {
+    for (ch = opts + 1; *ch; ++ch) {
         char *prech, *postch;
 
-        ch++; /* we never want to match on the first char, so this is ok */
         prech = ch - 1;
         postch = ch + 1;
+        if (!*postch)
+            break;
         if (*ch == ',') {
             if (*prech == '\'' && *postch == '\'')
                 continue;