On Sun, 25 Dec 2022, Ralph Corderoy wrote:
It's the first expression which is the problem.
$ sed -e 's%[[./*$^\\]%\\&%g' </dev/null
sed: -e expression #1, char 18: unterminated `s' command
$ sed -e 's%.*%/^&:/d%' </dev/null
$
Thanks for that help. It was way beyond my 'sed' skill level.
It's because ?[? represents itself inside a character class unless it's
followed by a colon, dot, or equals because then it looks like the start
of a ?[:digit:]? or similar. Re-ordering works:
$ sed -e 's%[.[/*$^\\]%\&%g' </dev/null
Thanks. That works. Strange that the buggy one worked for 2 decades.
Regards - Damian
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