core.formspec_escape: Restore backwards compat

Support numbers as arguments by using `string.gsub(text, ...)` instead of `text:gsub(...)` which will coerce `text` to a string

diff --git a/builtin/common/misc_helpers.lua b/builtin/common/misc_helpers.lua
index d2356b50572cedd04e6923ec3b796ea67acba9cf..467f188049614df3a40328bb6ae58095e4d6bd10 100644 (file)
--- a/builtin/common/misc_helpers.lua
+++ b/builtin/common/misc_helpers.lua
@@ -254,7 +254,7 @@ local formspec_escapes = {
 }
 function core.formspec_escape(text)
        -- Use explicit character set instead of dot here because it doubles the performance
-       return text and text:gsub("[\\%[%];,]", formspec_escapes)
+       return text and string.gsub(text, "[\\%[%];,]", formspec_escapes)
 end