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Postings from January 2018
On 01/01/2018 02:56 AM, Sawyer X wrote: > > > On 12/31/2017 10:31 PM, Karl Williamson wrote: >> I am proposing two deprecations >> >> First, using literal vertical space, such as a form feed or new line, >> in a regular expression pattern unless that pattern is /x. My guess >> is that this is extremely uncommon, and that just about all such >> occurrences would be from forgetting the /x. So deprecating this >> should affect hardly anyone. The reason I believe it is uncommon is >> that when displayed the pattern would look something like this: >> >> abc >> def >> or the def would overwrite the abc if the vertical space is a carriage >> return. If it is a newline, the def would appear under the abc, and >> that might look ok. I haven't come up with a way to grep cpan for >> this that doesn't have false positive /x uses. >> >> The reason I want to do this is to detect and warn on instances like >> this, and where the programmer forgot that '#' starts a comment. This >> deprecation will be helpful in that regard. >> >> Second, in order to make the new /xx modifier more useful (and yes, >> this should have been made experimental) I want to deprecate '#' >> occurring in a bracketed character class. At a later date, given the >> first deprecation as well, we could allow [...] to be split across >> lines with comments about each component. > > I couldn't follow whether these two are related. > The first is a prereq for the second to be worthwhileThread Previous | Thread Next