From 699497fbcb6cd7a3b9762268401bb69e1b0664df Mon Sep 17 00:00:00 2001
From: Hironori Kitagawa <h_kitagawa2001@yahoo.co.jp>
Date: Sun, 26 Feb 2023 06:25:07 +0900
Subject: [PATCH] platex/#95

---
 src/patches/lltjcore.sty | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/patches/lltjcore.sty b/src/patches/lltjcore.sty
index af49aef..470a8f9 100644
--- a/src/patches/lltjcore.sty
+++ b/src/patches/lltjcore.sty
@@ -201,6 +201,20 @@
 \patchcmd\@outputpage{\reset@font}{\@tombowreset@@paper\reset@font}{}{}
 \patchcmd\@outputpage{\@begindvi}{\@begindvi\@outputtombow}{}{}
 
+%
+\pretocmd\@floatboxreset{\pltx@save@float@dir}{}{}
+\patchcmd\@endfloatbox{\outer@nobreak}{\outer@nobreak\pltx@check@float@dir}{}{}
+\def\pltx@save@float@dir{%
+  \edef\pltx@float@dir@first{\ltjgetparameter{direction}}}
+\def\pltx@check@float@dir{%
+  \ifx\pltx@float@dir@first\@undefined\else
+    \ifnum\ltjgetparameter{direction}=\pltx@float@dir@first\else
+      \pltx@err@float@dir
+    \fi
+  \fi}
+\def\pltx@err@float@dir{%
+  \@latex@error{Direction change inside float!?\MessageBreak
+    Use \noexpand\layoutcaption provided in \string\usepackage{lltjext}}\@ehc}
 %%% Remove extra xkanjiskip
 \renewcommand\@makefnmark{%
   \unless\ifnum\ltjgetparameter{direction}=3
-- 
2.11.0