On Jun 7, 2005, at 15:39, Cy Kurtz wrote:
OK ... Remember you asked for it. I have at least a dozen files that I
want to update. I want to do this:
[EMAIL PROTECTED] somedirectory]$ perl -pi~ -e
's/./officers-gasenate.html/http://www.legis.state.ga.us/cgi-bin/
peo_list.pl?List=stsenatedl/' ./contactus.html
I was hoping to change this code:
State House</a> <a class="item2" href="./officers-
gasenate.html">Georgia
State Senate</a></div>
to this:
State House</a> <a class="item2" href="http://www.legis.state.ga.us/
cgi-bin/peo_list.pl?List=stsenatedl">Georgia
State Senate</a></div>
Of course it isn't working. I think it's because of all of those
forward slashes. I wonder if I'm trying to drive a nail with a coffee
cup.
Excellent, thank you.
To address those kind of issues, Perl not only allows the traditional
escaping solution, but also allows changing the very delimiters of
s/// to avoid any escaping at all, and thus enhancing readibility.
The idea is that you choose a delimiter that is not found in either
part of the substitution. That is documented in perlop.
In your case, you could do for instance:
[EMAIL PROTECTED] somedirectory]$ perl -pi~ -e
's{[.]/officers-gasenate[.]html}{http://www.legis.state.ga.us/cgi-bin/
peo_list.pl?List=stsenatedl}' ./contactus.html
where the regexp is surrounded by a pair "{", "}", and so is the
replacement string. Note that, in addition, the dot has been put in a
class because it was being used as a metacharacter whereas a literal
dot was required.
-- fxn
PS: Remember that munging HTML with regexps may be fragile unless you
control the HTML and know that a regexp approach is fine.
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