make @iftex case work in texinfo-5.1

2013-04-08 10:15:15 -07:00
parent 0e0351776a
commit 1846c7a35d
1 changed files with 5 additions and 4 deletions
--- a/doc/whatis.texi
+++ b/doc/whatis.texi
@@ -35,10 +35,11 @@ services can authenticate each other.
@end macro
@end ifinfo

-@tex
-@def@xsub#1{$_{#1}$}
-@global@let@sub=@xsub
-@end tex
+@iftex
+@macro sub{arg}
+@textsubscript{\arg\}
+@end macro
+@end iftex

@ifhtml
@macro sub{arg}