[luatex] nested ifincsname broken in luatex

[Hans Hagen]

On 5/4/2017 10:12 AM, David Carlisle wrote:
>
> the following plain tex file
>
> \ifcsname T\ifincsname e\else \hbox{e}\fi X\endcsname\fi
> \bye
>
>
> works in etex/pdftex/xetex but generates an error in luatex (tl2017 pretest)
>
> ifincsname should be true in the implicit csname started by the outer
> ifincsname

does

\suppressifcsnameerror1

help?


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