# HG changeset patch
# User Matthew Wild <mwild1@gmail.com>
# Date 1779705153 -3600
# Node ID 94172bbf907406743f97c7d7c7b96cb9a2a6fe99
# Parent  190d172ab021a7082c38f0e33993bcd82093ba7b
util.jsonschema: Always accept 0 for multipleOf properties

Per the JSON schema test suite, 0 is considered "a multiple of anything" and
should never be rejected by the multipleOf test. The previous behaviour was to
always reject 0.

0 is *not* a valid value for multipleOf itself (which must be >0), but
util.jsonschema does not seem to do much/any validation of the provided schema
so I haven't added a check for that. I assume there are JSON schema schemas?

diff -r 190d172ab021 -r 94172bbf9074 util/jsonschema.lua
--- a/util/jsonschema.lua	Mon May 25 13:07:32 2026 +0100
+++ b/util/jsonschema.lua	Mon May 25 11:32:33 2026 +0100
@@ -126,7 +126,7 @@
 	end
 
 	if type(data) == "number" then
-		if schema.multipleOf and (data == 0 or data % schema.multipleOf ~= 0) then
+		if schema.multipleOf and data ~= 0 and data % schema.multipleOf ~= 0 then
 			table.insert(errs, mkerr(sloc .. "/luaPattern", iloc, "not a multiple"))
 			return false, errs
 		end