From: Martin Mares <mj@ucw.cz>
Date: Sat, 4 Mar 2023 15:02:43 +0000 (+0100)
Subject: Filters: Allow leading "0x" for backward compatibility
X-Git-Tag: v3.10.0~16
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=a9f51446fe43f39455df116723b64bb44c916c1e;p=pciutils.git

Filters: Allow leading "0x" for backward compatibility
---

diff --git a/lib/filter.c b/lib/filter.c
index 7038451..86486d3 100644
--- a/lib/filter.c
+++ b/lib/filter.c
@@ -76,6 +76,11 @@ parse_hex_field(char *str, int *outp, unsigned int *maskp, unsigned int max)
   if (!field_defined(str))
     return 1;	// and keep the defaults
 
+  // Historically, filters allowed writing hexadecimal numbers with leading "0x".
+  // This was never intentional nor documented, but some people relied on it.
+  if (!maskp && str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
+    str += 2;
+
   while (*str)
     {
       int c = *str++;