[NTG-context] fixing mpiv on installation path with spaces

[Hans Hagen]

On 16-5-2012 01:45, Mojca Miklavec wrote:
> Hello,
>
> last year Taco added many patches to make sure that ConTeXt works even
> when installed to "C:\Documents and Settings\ ..." and other weird
> paths with spaces. However metapost in mkiv still fails. I figured out
> that the following patch (which *won't* handle paths with quotation
> marks properly) in mlib-run.lua fixes the problem:
>
>      local preamble = [[
>          boolean mplib ; mplib := true ;
>          let dump = endinput ;
> -        input %s ;
> +        input "%s" ;
>      ]]

I'm always a it puzzled by mp's file name handling as the name is not 
really a string. MP oracle Taco has to speak up ...

Hans

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