From a8fbdb461cecbfe1ac6ecc5d8f6cf181e1507da8 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 11 Apr 2023 11:15:33 +0200
Subject: [PATCH] gen.pl: error on duplicated See-Also fields

Updated http2.d accordingly.

Closes #10925
---
 docs/cmdline-opts/gen.pl  | 4 ++++
 docs/cmdline-opts/http2.d | 5 ++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/docs/cmdline-opts/gen.pl b/docs/cmdline-opts/gen.pl
index 40bd1b6e1e..db68d31d4e 100755
--- a/docs/cmdline-opts/gen.pl
+++ b/docs/cmdline-opts/gen.pl
@@ -241,6 +241,10 @@ sub single {
             $protocols=$1;
         }
         elsif(/^See-also: *(.*)/i) {
+            if($seealso) {
+                print STDERR "ERROR: duplicated See-also in $f\n";
+                return 1;
+            }
             $seealso=$1;
         }
         elsif(/^Requires: *(.*)/i) {
diff --git a/docs/cmdline-opts/http2.d b/docs/cmdline-opts/http2.d
index fb1b2a05b6..17264b02a6 100644
--- a/docs/cmdline-opts/http2.d
+++ b/docs/cmdline-opts/http2.d
@@ -6,9 +6,8 @@ Protocols: HTTP
 Added: 7.33.0
 Mutexed: http1.1 http1.0 http2-prior-knowledge http3
 Requires: HTTP/2
-See-also: no-alpn
-Help: Use HTTP 2
-See-also: http1.1 http3
+Help: Use HTTP/2
+See-also: http1.1 http3 no-alpn
 Category: http
 Example: --http2 $URL
 Multi: mutex