From f88bc5cc59374a62238b9aac44c2b7ed345e45fb Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Sun, 22 Feb 2026 12:18:39 +0100
Subject: [PATCH] test1712: introduce mode=warn

Use the mode="warn" attribute if the output curl warning output, as it
then makes the check without newlines and the prefix to better handle
that the lines may wrap at different points depending on the lengths of
the lines and terminal width.
---
 docs/tests/FILEFORMAT.md | 7 ++++++-
 tests/data/test1712      | 2 +-
 tests/runtests.pl        | 8 ++++++++
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/docs/tests/FILEFORMAT.md b/docs/tests/FILEFORMAT.md
index 26dae3e23f..5fe09aa3db 100644
--- a/docs/tests/FILEFORMAT.md
+++ b/docs/tests/FILEFORMAT.md
@@ -712,12 +712,17 @@ server is used), if `nonewline` is set, we cut off the trailing newline of
 this given data before comparing with the one actually sent by the client The
 `<strip>` and `<strippart>` rules are applied before comparisons are made.
 
-### `<stderr [mode="text"] [nonewline="yes"] [crlf="yes|headers"]>`
+### `<stderr [mode="text/warn"] [nonewline="yes"] [crlf="yes|headers"]>`
 This verifies that this data was passed to stderr.
 
 Use the mode="text" attribute if the output is in text mode on platforms that
 have a text/binary difference.
 
+Use the mode="warn" attribute if the output curl warning output, as it then
+makes the check without newlines and the prefix to better handle that the
+lines may wrap at different points depending on the lengths of the lines and
+terminal width.
+
 `crlf=yes` forces the newlines to become CRLF even if not written so in the
 test.
 
diff --git a/tests/data/test1712 b/tests/data/test1712
index 2466939ff2..198b5e17ad 100644
--- a/tests/data/test1712
+++ b/tests/data/test1712
@@ -53,7 +53,7 @@ Content-Type: application/x-www-form-urlencoded
 
 'arg-with-quote'
 </protocol>
-<stderr mode="text">
+<stderr mode="warn">
 Warning: %LOGDIR/config:1 Option 'data' uses argument with leading single quote.%SP
 Warning: It is probably a mistake. Consider double quotes.
 </stderr>
diff --git a/tests/runtests.pl b/tests/runtests.pl
index e0bc468f10..d8ac67a670 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -1346,6 +1346,14 @@ sub singletest_check {
             normalize_text(\@validstderr);
             normalize_text(\@actual);
         }
+        if($filemode && ($filemode eq "warn")) {
+            map { 's/Warning: //' } (@validstderr);
+            map { 's/\r//' } (@validstderr);
+            map { 's/\n/ /' } (@validstderr);
+            map { 's/Warning: //' } (@actual);
+            map { 's/\r//' } (@actual);
+            map { 's/\n/ /' } (@actual);
+        }
 
         if($hash{'nonewline'}) {
             # Yes, we must cut off the final newline from the final line