From eaa3f0486cffee0485346dc40d17fd43d6490e6a Mon Sep 17 00:00:00 2001
From: Fabian Boehm <FHomborg@gmail.com>
Date: Sun, 20 Aug 2023 11:19:52 +0200
Subject: [PATCH] math: Add tests for args via stdin and argv

This reads stdin and ignores argv, which is certainly a choice.

Leaving it this way for now, and possibly discussing later.
---
 tests/checks/math.fish | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/checks/math.fish b/tests/checks/math.fish
index aae949297..5df0daf89 100644
--- a/tests/checks/math.fish
+++ b/tests/checks/math.fish
@@ -349,3 +349,12 @@ math -0x8p-0_3
 
 echo 5 + 6 | math
 # CHECK: 11
+
+# Historical: If we have arguments on stdin and argv,
+# the former takes precedence and the latter is ignored entirely.
+echo 7 + 6 | math 2 + 2
+# CHECK: 13
+
+# It isn't checked at all.
+echo 7 + 8 | math not an expression
+# CHECK: 15