Re: reinterpolation of regexp (and strings?)

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Re^2: reinterpolation of regexp (and strings?) by ikegami (Patriarch) on Jul 23, 2008 at 08:21 UTC
Tricky. I don't think you can do it without the eval. Unless the /ee option does the trick as ikegami suggests. `s/.../.../ee` is short for `s/.../eval .../e`, so that "unless" is not an exception. Your suggestion of re-interpolation sounds nice but is probably very tricky to implement. It's not possible since interpolation involved executing arbitrary code. Maybe a limited form of interpolation? That would be possible and useful.	[reply] [d/l] [select]
Re^3: reinterpolation of regexp (and strings?) by massa (Hermit) on Jul 23, 2008 at 09:30 UTC
Are you aware that _any_ string interpolation can inject _any_ arbitrary code in a string? Try this: `perl -le 'print qq(@{[ do{ print q(I got here first); 1 } ]})'` [download] The thing is: there is no safe string interpolation, you you might as well do the `//ee` thingy. :-) []s, HTH, Massa (κς,πμ,πλ)	[reply] [d/l] [select]
Re^4: reinterpolation of regexp (and strings?) by ikegami (Patriarch) on Jul 23, 2008 at 18:38 UTC
Are you aware that _any_ string interpolation can inject _any_ arbitrary code in a string? Yes, I know since I said as much in the post to which you replied. Are you aware that _any_ string interpolation can inject _any_ arbitrary code in a string? Not true. The one provided by String::Interpolate doesn't. The native interpolation mechanism does, but we were never talking about that. The OP was proposing a new feature. While I don't see anyone putting in the effort into implementing what is really just another template system, I mentioned that interpolation is not necessarily unsafe, only the current native implementation, and that a safe implementation could be devised.	[reply]
Re^2: reinterpolation of regexp (and strings?) by AlwaysLearning (Sexton) on Jul 23, 2008 at 08:42 UTC
I'm not sure of the overhead involved in String::Interpolate, but it sure is easy to code and use. And lots of options for different types of interpolation, which makes me wonder if there is more overhead than needed.... a qi{} operator could probably handle the simple case of interpolation without overhead, except on the part of the porters to code it...	[reply]