From 64489bc3be7bcf69493143c1f1c221e12748e285 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Sat, 8 Nov 2025 12:43:24 +0100
Subject: [PATCH] CURLOPT_READFUNCTION.md: clarify the size of the buffer

No need to multiply with size as size is always 1 - and documented so.

Closes #19402
---
 docs/libcurl/opts/CURLOPT_HEADERFUNCTION.md | 2 +-
 docs/libcurl/opts/CURLOPT_READFUNCTION.md   | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/docs/libcurl/opts/CURLOPT_HEADERFUNCTION.md b/docs/libcurl/opts/CURLOPT_HEADERFUNCTION.md
index 8e16b78d55..060ebf5bdd 100644
--- a/docs/libcurl/opts/CURLOPT_HEADERFUNCTION.md
+++ b/docs/libcurl/opts/CURLOPT_HEADERFUNCTION.md
@@ -109,7 +109,7 @@ Nothing.
 static size_t header_callback(char *buffer, size_t size,
                               size_t nitems, void *userdata)
 {
-  /* received header is 'nitems' bytes in 'buffer' NOT ZERO TERMINATED */
+  /* received header is 'nitems' bytes in 'buffer' NOT NULL-TERMINATED */
   /* 'userdata' is set with CURLOPT_HEADERDATA */
   return nitems;
 }
diff --git a/docs/libcurl/opts/CURLOPT_READFUNCTION.md b/docs/libcurl/opts/CURLOPT_READFUNCTION.md
index 71ad2e9ca0..0046ded635 100644
--- a/docs/libcurl/opts/CURLOPT_READFUNCTION.md
+++ b/docs/libcurl/opts/CURLOPT_READFUNCTION.md
@@ -36,9 +36,8 @@ Pass a pointer to your callback function, as the prototype shows above.
 
 This callback function gets called by libcurl as soon as it needs to read data
 in order to send it to the peer - like if you ask it to upload or post data to
-the server. The data area pointed at by the pointer *buffer* should be
-filled up with at most *size* multiplied with *nitems* number of bytes
-by your function. *size* is always 1.
+the server. The data area pointed at by the pointer *buffer* should be filled
+up with at most *nitems* number of bytes by your function. *size* is always 1.
 
 Set the *userdata* argument with the CURLOPT_READDATA(3) option.