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Ah, but the whole point of mine was to avoid the need to specify the pattern and instead read it from the first line. Your approach will simply delete any line that starts with ID. You have no guarantee that this won't delete lines that should be kept. Since you brought up elegance, g is pointless if you use ^ and $. In fact, all of your options to m/// are useless here except s; they activate features you're not using. So's the $, s/^ID.*//s would do the same thing.

terdon
– terdon ♦

2016-01-28 10:37:02 +00:00
Commented Jan 28, 2016 at 10:37
@terdon, fair enough. Yours is much more universal!

MAQ
– MAQ

2016-01-28 19:39:42 +00:00
Commented Jan 28, 2016 at 19:39

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