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bug#7006: Reader oddity after ?\^ --- should signal error if invalid ins


From: Daniel Colascione
Subject: bug#7006: Reader oddity after ?\^ --- should signal error if invalid instead of being garbage
Date: Thu, 9 Sep 2010 14:25:52 -0700

?\^ is supposed to be the prefix for a control character --- for
example, ?\^g. However, the character following the ^ can be a
non-existent control character like ' ' or ')'. Currently, the reader
outputs a nonsense value in this case. Instead, the reader ought to
signal an error.





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