Robert Klemme
3/17/2008 1:08:00 PM
On 17.03.2008 13:45, T K wrote:
> I'm writing a ruby script that does a batch search-and-replace command.
>
> In each line of the file that is opened, I would like to delete part
> of the entire part matched by a regrex. For example,
>
>
> line.gsub(/(Tennis\/Soccer\/.+?).+?){
That's not a valid regular expression as far as I can see. So the whole
piece of code is not valid Ruby code.
> puts $& # entire match
> puts $1 # the first match
puts is not going to work for replacements.
> }
>
> I can successfuly identify the parts I need in the regres, now I want
> to only keep the first match. Something like "$&" - "$1".
Err, what? Can you please be a bit more specific? What is it that you
want to match and what is your expected output?
Did you maybe mean
line.gsub! %r{Tennis/Soccer/(.+?)}, '\\1'
Note though that .+? will match a single character most of the time if
you do not place another expression with a more specific pattern afterwards.
> I tried different methods such as String#delete, but they didn't work for me.
String#gsub and #gsub! are fine. You just need to use them properly.
Kind regards
robert