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# 8  
Old 08-25-2010
Quote:
Originally Posted by gravesit
The only thing I don't like about that solution is it removes all the blank lines in the file also.
Good point. An oversight, sorry Smilie
# 9  
Old 08-25-2010
A tweak to scottn's solution which does not consume blank lines, handles lines with multiple comments, and strongly quotes the exclamation point to protect it from history expansion on shells that support that feature:
Code:
$ cat data
some stuff
<!-- some comment-->

some more stuff <!-- some comment 2-->
<!-- some comment 3-->yet some more stuff
<!-- some comment 4-->yet even some more stuff<!-- some comment 5-->
$ sed -e '/^$/b' -e 's/<!--[^>]*>//g; /^$/d' data
some stuff

some more stuff 
yet some more stuff
yet even some more stuff

Caveat: This only works for simple single-line comments which do not contain a ">" (which, if I recall correctly, is allowed).

Regards,
Alister
Last edited by alister; 08-25-2010 at 02:33 PM..
This User Gave Thanks to alister For This Post:
Scott
# 10  
Old 08-25-2010
Quote:
Originally Posted by alister
A tweak to scottn's solution which does not consume blank lines, handles lines with multiple comments, and strongly quotes the exclamation point to protect it from history expansion on shells that support that feature:
Code:
$ cat data
some stuff
<!-- some comment-->

some more stuff <!-- some comment 2-->
<!-- some comment 3-->yet some more stuff
<!-- some comment 4-->yet even some more stuff<!-- some comment 5-->
$ sed -e '/^$/b' -e 's/<!--[^>]*>//g; /^$/d' data
some stuff

some more stuff 
yet some more stuff
yet even some more stuff

Regards,
Alister
Very nicely done Smilie
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