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)