if you want x, you know where to find it.

from Jargon File (4.4.4, 14 Aug 2003)
If you want X, you know where to find it.


   There is a legend that Dennis Ritchie, inventor of {C}, once responded
   to demands for features resembling those of what at the time was a
   much more popular language by observing "If you want PL/I, you know
   where to find it." Ever since, this has been hackish standard form for
   fending off requests to alter a new design to mimic some older (and,
   by implication, inferior and {baroque}) one. The case X = {Pascal}
   manifests semi-regularly on Usenet's comp.lang.c newsgroup. Indeed,
   the case X = X has been reported in discussions of graphics software
   (see {X}).
    
from The Free On-line Dictionary of Computing (8 July 2008)
If you want X, you know where to find it.

   <exclamation> There is a legend that {Dennis Ritchie},
   inventor of {C}, once responded to demands for features
   resembling those of what at the time was a much more popular
   language by observing "If you want {PL/I}, you know where to
   find it."  Ever since, this has been hackish standard form for
   fending off requests to alter a new design to mimic some older
   (and, by implication, inferior and {baroque}) one.  The case X
   = {Pascal} manifests semi-regularly on {Usenet}'s
   news:comp.lang.c newsgroup.  Indeed, the case X = X has
   been reported in discussions of graphics software (see {X
   Window System}).

   [{Jargon File}]

   (1995-10-25)
    

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