[luatex] Problem building 0.50.0 (and trunk)

[Reinhard Kotucha]

On 7 January 2010 Karl Berry wrote:

 > I doubt "which" is sufficiently portable, given that we're already
 > talking about systems that don't have /bin/bash.

We have a function called "which" already in tlpkg/TeXLive/TLUtils.pm.

Regards,
  Reinhard

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