On Tue, Apr 03, 2012 at 12:24:54PM +1000, m...@raf.org wrote: > Cameron Simpson wrote: > > > You need double backslashes because two things are happening. > > [...snip...] > > the best computing advice i've ever had was: > > "Double the number of backslashes!" > - John Mackin > > he didn't even know what my problem was when he said it but he was right. > > if it doesn't fix your problem, you just haven't doubled the number of > backslashes enough times. :-)
Along these lines I hit a bug in procmail when specifying a word boundary regex where the leading \ must be escaped but not the trailing one. For example I had a procmail recipe with: * \<((lib)?krb5?|kerberos|kerberize|(lib)?sasl|(lib)?gss(.api)?)\> which wasn't working but when I change that to: * \\<((lib)?krb5?|kerberos|kerberize|(lib)?sasl|(lib)?gss(.api)?)\> it did proper matching. It's bad enough trying to understand when and what to escape but throw in buggy parsing and wait, I think my head just exploded. -- Will Fiveash
