From 0d85c8c49d90fa8c1475832e0a8f1916a04d9a69 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 1 Apr 2025 09:36:47 +0200
Subject: [PATCH] tool_paramhlp: make proto2num skip leading commas better

Closes #16892
---
 src/tool_paramhlp.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/tool_paramhlp.c b/src/tool_paramhlp.c
index 3548e509f6..068b0d442b 100644
--- a/src/tool_paramhlp.c
+++ b/src/tool_paramhlp.c
@@ -437,8 +437,13 @@ ParameterError proto2num(struct OperationConfig *config,
     size_t plen;
     enum e_action { allow, deny, set } action = allow;
 
-    if(next)
+    if(next) {
+      if(str == next) {
+        str++;
+        continue;
+      }
       plen = next - str - 1;
+    }
     else
       plen = strlen(str) - 1;
 
-- 
2.47.2