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clear: remove "" as well

--- a/clear

+++ b/clear

@@ -3,7 +3,7 @@

 # leaving only the command prompts

 grep `{echo -n '^'^$prompt(1)} </dev/text | \

-	grep -v '^'^$prompt(1)^clear | \

+	grep -v '^'^$prompt(1)^'(clear|"")' | \

 	uniq >/tmp/clearing.$pid

 cp /tmp/clearing.$pid /dev/text