\ltj@@getjfontnumber: fix category code

diff --git a/src/luatexja-core.sty b/src/luatexja-core.sty
index 12a7a09..a5801ed 100644 (file)
--- a/src/luatexja-core.sty
+++ b/src/luatexja-core.sty
@@ -546,7 +546,7 @@
   \ltj@reset@globaldefs
   \begingroup\ltj@curjfnt\m@ne\ltj@curtfnt\m@ne\relax
   #1\directlua{luatexja.__temp = -(\the\ltj@curjfnt)*(\the\ltj@curtfnt)}\endgroup
-  \ltj@tempcntc=\directlua{tex.sprint(luatexja.__temp)}\relax
+  \ltj@tempcntc=\directlua{tex.sprint(-2,luatexja.__temp)}\relax
   \ifnum\ltj@tempcntc=\m@ne
     \@PackageError{luatexja-core}%
     {\string#1 is not a control sequence that represents \MessageBreak