[dev-context] little unharmful bug in \showfont & using \iffontchar in \definecharacter

[Hans Hagen]

Mojca Miklavec wrote:

>I didn't know that it would slow down the process that much, but I
>could imagine that people who want to use "empty" fonts would
>sacrifice those couple of optional seconds to get better results (an
>additional \ifuserwanttodothatelse would probably slow down the
>process as well :). However, I don't know how to do that anyway, so I
>would redefine those commands manually in that case (already happened
>a couple of times, although at first I had no idea what to do).
>  
>
tests can be made fast (enough) but we need to keep in mind that definitions of characters have to (fully) expand differently depending on the circumstances

so testing a combination of 

{language,none}{font,none}{encoding,default}

is doable but needs some thinking 

Hans 

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