Ben Nadel declared June 1, 2008 the first National Regular Expression Day, and to celebrate he hosted a giveaway of regex-related prizes, including Jeffrey Friedl’s Mastering Regular Expressions. As you can see, I won the book and got it in the mail yesterday. I use regular expressions all the time—in PHP, JavaScript, Perl, sed, [...]
Tag Archives: sed
sed and Multi-Line Search and Replace
April 26, 2008 – 1:21 pm
I’ve been experimenting with getting regular expression patterns to match over multiple lines using sed. For example, one might want to change
<p>previous text</p>
<h2>
<a href="http://some-link.com">A title here</a>
</h2>
<p>following text</p>
to
<p>previous text</p>
No title here
<p>following text</p>
sed cycles through each line of input one line at a time, so the most obvious way to match a pattern that extends [...]