[ET Trac] #2852: No error for multiple definitions of an interface group.

[Steven R. Brandt]

#2852: No error for multiple definitions of an interface group.

 Reporter: Steven R. Brandt
   Status: new
Milestone: ET_2025_05
  Version: 
     Type: bug
 Priority: major
Component: Cactus

Lucas created an interface.ccl file where two groups differed only by capitalization.  To make matters worse, the variables in the 2nd group only differed from those in the first by capitalization. As a result, Cactus happily passed everything through the CST. The result was an error from the compiler about undefined variables.

To make this situation less  unpleasant, we should provide a clear error message for multiple definitions of the same interface group.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2852/no-error-for-multiple-definitions-of-an
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