test2e cfg to revert to OT1

support/test2e.cfg

@@ -0,0 +1,56 @@
+% if not Unicode TeX skip this customisation
+\ifx\Umathchar\undefined
+  \expandafter\endinput
+\fi
+
+% defaults
+\long\def\rmdefault{cmr}
+\long\def\sfdefault{cmss}
+\long\def\ttdefault{cmtt}
+
+
+% additional subst
+\DeclareFontFamily{TU}{cmr}{}
+\DeclareFontShape{TU}{cmr}{m}{n} {<->sub * lmr/m/n}{}
+
+\let\TEST@defaultsubs\@defaultsubs
+\let\TEST@lde\LastDeclaredEncoding
+\input {omlenc.def}
+\input  {t1enc.def}
+\input {ot1enc.def}
+\input {omsenc.def}
+\let\@defaultsubs\TEST@defaultsubs
+
+\let\LastDeclaredEncoding\TEST@lde
+
+
+\def\TU@test{TU}
+\edef\TU@testb{\f@encoding}
+\edef\TU@testc{\encodingdefault}
+
+% remove TU from the list checked at begin document
+{
+\toks@{}
+\def\cdp@elt#1#2#3#4{%
+\def\@tempb{#1}%
+\ifx\@tempb\TU@test\else
+\toks@\expandafter{\the\toks@\cdp@elt{#1}{#2}{#3}{#4}}%
+\fi}
+\cdp@list
+\xdef\cdp@list{\the\toks@}
+}
+
+% If the current or default encodings are TU set them to OT1
+\ifx\TU@test\TU@testb
+  \def\f@encoding{OT1}
+\fi
+\ifx\TU@test\TU@testc
+  \long\def\encodingdefault{OT1}
+\fi
+
+
+% if a font has already been selected select the new \normalfont
+\expandafter\ifx\the\font\nullfont
+\else
+  \normalfont
+\fi