simple execvp test

[Pavel Tsekov]

This mail is inspired by an offlist discussion
with James Lee about vi execution before 
"cvs commit" command.

Given the following simple test he says nothing
happens after he executes it, as happens with the
"cvs commit" command which fails to execute vi 
with the following error code "cannot exec vi: No such file or
directory".

#include <unistd.h>

int main()
{
  char *arg[] = {
    0
  };

  execvp("vi", arg);

  return 0;
}

If he sets for example the EDITOR variable
to /usr/bin/vi then cvs suceeds in executing
vi.

So is this a known problem with execvp assuming 
that it should search the path for the executable.

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