"sed" supports comments, but this is undocumented

[Peter King]

The other undocumented feature of "sed" that is perhaps more useful,
particularly when preparing shell scripts and makefiles is
the ability to have several commands on the same line separated by ';'
e.g.
	/xyz/s/xy/yx/
	/abc/d
can be replaced by
	/xyz/s/xy/yx/;/abc/d

-- 
	Peter King, Heriot-Watt University
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